root / drupal7 / modules / field / field.api.php @ 6d8023f2
| 1 | 85ad3d82 | Assos Assos | <?php
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| 2 | 4444412d | Julien Enselme | /**
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| 3 | * @file
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| 4 | * Hooks provided by the Field module.
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| 5 | */
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| 6 | 85ad3d82 | Assos Assos | |
| 7 | /**
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| 8 | * @addtogroup hooks
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| 9 | * @{
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| 10 | */
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| 11 | |||
| 12 | /**
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| 13 | * Exposes "pseudo-field" components on fieldable entities.
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| 14 | *
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| 15 | * Field UI's "Manage fields" and "Manage display" pages let users re-order
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| 16 | * fields, but also non-field components. For nodes, these include the title,
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| 17 | * poll choices, and other elements exposed by modules through hook_form() or
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| 18 | * hook_form_alter().
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| 19 | *
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| 20 | * Fieldable entities or modules that want to have their components supported
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| 21 | * should expose them using this hook. The user-defined settings (weight,
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| 22 | * visible) are automatically applied on rendered forms and displayed
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| 23 | * entities in a #pre_render callback added by field_attach_form() and
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| 24 | * field_attach_view().
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| 25 | *
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| 26 | * @see _field_extra_fields_pre_render()
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| 27 | * @see hook_field_extra_fields_alter()
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| 28 | *
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| 29 | * @return
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| 30 | * A nested array of 'pseudo-field' elements. Each list is nested within the
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| 31 | * following keys: entity type, bundle name, context (either 'form' or
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| 32 | * 'display'). The keys are the name of the elements as appearing in the
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| 33 | * renderable array (either the entity form or the displayed entity). The
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| 34 | * value is an associative array:
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| 35 | * - label: The human readable name of the element.
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| 36 | * - description: A short description of the element contents.
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| 37 | * - weight: The default weight of the element.
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| 38 | * - edit: (optional) String containing markup (normally a link) used as the
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| 39 | * element's 'edit' operation in the administration interface. Only for
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| 40 | * 'form' context.
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| 41 | * - delete: (optional) String containing markup (normally a link) used as the
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| 42 | * element's 'delete' operation in the administration interface. Only for
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| 43 | * 'form' context.
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| 44 | 4444412d | Julien Enselme | *
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| 45 | * @ingroup field_types
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| 46 | 85ad3d82 | Assos Assos | */
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| 47 | function hook_field_extra_fields() { |
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| 48 | $extra['node']['poll'] = array( |
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| 49 | 'form' => array( |
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| 50 | 'choice_wrapper' => array( |
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| 51 | 'label' => t('Poll choices'), |
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| 52 | 'description' => t('Poll choices'), |
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| 53 | 'weight' => -4, |
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| 54 | ), |
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| 55 | 'settings' => array( |
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| 56 | 'label' => t('Poll settings'), |
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| 57 | 'description' => t('Poll module settings'), |
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| 58 | 'weight' => -3, |
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| 59 | ), |
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| 60 | ), |
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| 61 | 'display' => array( |
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| 62 | 'poll_view_voting' => array( |
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| 63 | 'label' => t('Poll vote'), |
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| 64 | 'description' => t('Poll vote'), |
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| 65 | 'weight' => 0, |
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| 66 | ), |
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| 67 | 'poll_view_results' => array( |
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| 68 | 'label' => t('Poll results'), |
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| 69 | 'description' => t('Poll results'), |
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| 70 | 'weight' => 0, |
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| 71 | ), |
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| 72 | ) |
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| 73 | ); |
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| 74 | |||
| 75 | return $extra; |
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| 76 | } |
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| 77 | |||
| 78 | /**
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| 79 | * Alter "pseudo-field" components on fieldable entities.
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| 80 | *
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| 81 | * @param $info
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| 82 | * The associative array of 'pseudo-field' components.
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| 83 | *
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| 84 | * @see hook_field_extra_fields()
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| 85 | 4444412d | Julien Enselme | *
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| 86 | * @ingroup field_types
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| 87 | 85ad3d82 | Assos Assos | */
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| 88 | function hook_field_extra_fields_alter(&$info) { |
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| 89 | // Force node title to always be at the top of the list by default.
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| 90 | foreach (node_type_get_types() as $bundle) { |
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| 91 | if (isset($info['node'][$bundle->type]['form']['title'])) { |
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| 92 | $info['node'][$bundle->type]['form']['title']['weight'] = -20; |
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| 93 | } |
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| 94 | } |
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| 95 | } |
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| 96 | |||
| 97 | /**
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| 98 | * @defgroup field_types Field Types API
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| 99 | * @{
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| 100 | * Define field types.
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| 101 | *
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| 102 | * In the Field API, each field has a type, which determines what kind of data
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| 103 | * (integer, string, date, etc.) the field can hold, which settings it provides,
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| 104 | * and so on. The data type(s) accepted by a field are defined in
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| 105 | * hook_field_schema(); other basic properties of a field are defined in
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| 106 | * hook_field_info(). The other hooks below are called by the Field Attach API
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| 107 | * to perform field-type-specific actions.
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| 108 | *
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| 109 | * The Field Types API also defines two kinds of pluggable handlers: widgets
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| 110 | * and formatters. @link field_widget Widgets @endlink specify how the field
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| 111 | * appears in edit forms, while @link field_formatter formatters @endlink
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| 112 | * specify how the field appears in displayed entities.
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| 113 | *
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| 114 | * A third kind of pluggable handlers, storage backends, is defined by the
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| 115 | * @link field_storage Field Storage API @endlink.
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| 116 | *
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| 117 | * See @link field Field API @endlink for information about the other parts of
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| 118 | * the Field API.
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| 119 | */
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| 120 | |||
| 121 | /**
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| 122 | * Define Field API field types.
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| 123 | *
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| 124 | * Along with this hook, you also need to implement other hooks. See
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| 125 | * @link field_types Field Types API @endlink for more information.
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| 126 | *
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| 127 | * @return
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| 128 | * An array whose keys are field type names and whose values are arrays
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| 129 | * describing the field type, with the following key/value pairs:
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| 130 | * - label: The human-readable name of the field type.
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| 131 | * - description: A short description for the field type.
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| 132 | * - settings: An array whose keys are the names of the settings available
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| 133 | * for the field type, and whose values are the default values for those
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| 134 | * settings.
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| 135 | * - instance_settings: An array whose keys are the names of the settings
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| 136 | * available for instances of the field type, and whose values are the
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| 137 | * default values for those settings. Instance-level settings can have
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| 138 | * different values on each field instance, and thus allow greater
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| 139 | * flexibility than field-level settings. It is recommended to put settings
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| 140 | * at the instance level whenever possible. Notable exceptions: settings
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| 141 | * acting on the schema definition, or settings that Views needs to use
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| 142 | * across field instances (for example, the list of allowed values).
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| 143 | * - default_widget: The machine name of the default widget to be used by
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| 144 | * instances of this field type, when no widget is specified in the
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| 145 | * instance definition. This widget must be available whenever the field
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| 146 | * type is available (i.e. provided by the field type module, or by a module
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| 147 | * the field type module depends on).
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| 148 | * - default_formatter: The machine name of the default formatter to be used
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| 149 | * by instances of this field type, when no formatter is specified in the
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| 150 | * instance definition. This formatter must be available whenever the field
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| 151 | * type is available (i.e. provided by the field type module, or by a module
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| 152 | * the field type module depends on).
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| 153 | * - no_ui: (optional) A boolean specifying that users should not be allowed
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| 154 | * to create fields and instances of this field type through the UI. Such
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| 155 | * fields can only be created programmatically with field_create_field()
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| 156 | * and field_create_instance(). Defaults to FALSE.
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| 157 | *
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| 158 | * @see hook_field_info_alter()
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| 159 | */
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| 160 | function hook_field_info() { |
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| 161 | return array( |
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| 162 | 'text' => array( |
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| 163 | 'label' => t('Text'), |
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| 164 | 'description' => t('This field stores varchar text in the database.'), |
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| 165 | 'settings' => array('max_length' => 255), |
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| 166 | 'instance_settings' => array('text_processing' => 0), |
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| 167 | 'default_widget' => 'text_textfield', |
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| 168 | 'default_formatter' => 'text_default', |
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| 169 | ), |
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| 170 | 'text_long' => array( |
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| 171 | 'label' => t('Long text'), |
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| 172 | 'description' => t('This field stores long text in the database.'), |
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| 173 | 'settings' => array('max_length' => ''), |
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| 174 | 'instance_settings' => array('text_processing' => 0), |
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| 175 | 'default_widget' => 'text_textarea', |
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| 176 | 'default_formatter' => 'text_default', |
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| 177 | ), |
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| 178 | 'text_with_summary' => array( |
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| 179 | 'label' => t('Long text and summary'), |
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| 180 | 'description' => t('This field stores long text in the database along with optional summary text.'), |
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| 181 | 'settings' => array('max_length' => ''), |
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| 182 | 'instance_settings' => array('text_processing' => 1, 'display_summary' => 0), |
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| 183 | 'default_widget' => 'text_textarea_with_summary', |
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| 184 | 'default_formatter' => 'text_summary_or_trimmed', |
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| 185 | ), |
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| 186 | ); |
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| 187 | } |
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| 188 | |||
| 189 | /**
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| 190 | * Perform alterations on Field API field types.
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| 191 | *
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| 192 | * @param $info
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| 193 | * Array of information on field types exposed by hook_field_info()
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| 194 | * implementations.
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| 195 | */
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| 196 | function hook_field_info_alter(&$info) { |
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| 197 | // Add a setting to all field types.
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| 198 | foreach ($info as $field_type => $field_type_info) { |
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| 199 | $info[$field_type]['settings'] += array( |
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| 200 | 'mymodule_additional_setting' => 'default value', |
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| 201 | ); |
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| 202 | } |
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| 203 | |||
| 204 | // Change the default widget for fields of type 'foo'.
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| 205 | if (isset($info['foo'])) { |
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| 206 | $info['foo']['default widget'] = 'mymodule_widget'; |
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| 207 | } |
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| 208 | } |
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| 209 | |||
| 210 | /**
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| 211 | * Define the Field API schema for a field structure.
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| 212 | *
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| 213 | * This is invoked when a field is created, in order to obtain the database
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| 214 | * schema from the module that defines the field's type.
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| 215 | *
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| 216 | * This hook must be defined in the module's .install file for it to be detected
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| 217 | * during installation and upgrade.
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| 218 | *
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| 219 | * @param $field
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| 220 | * A field structure.
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| 221 | *
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| 222 | * @return
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| 223 | * An associative array with the following keys:
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| 224 | * - columns: An array of Schema API column specifications, keyed by column
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| 225 | * name. This specifies what comprises a value for a given field. For
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| 226 | * example, a value for a number field is simply 'value', while a value for
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| 227 | * a formatted text field is the combination of 'value' and 'format'. It is
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| 228 | * recommended to avoid having the column definitions depend on field
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| 229 | * settings when possible. No assumptions should be made on how storage
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| 230 | * engines internally use the original column name to structure their
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| 231 | * storage.
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| 232 | * - indexes: (optional) An array of Schema API indexes definitions. Only
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| 233 | * columns that appear in the 'columns' array are allowed. Those indexes
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| 234 | * will be used as default indexes. Callers of field_create_field() can
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| 235 | * specify additional indexes, or, at their own risk, modify the default
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| 236 | * indexes specified by the field-type module. Some storage engines might
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| 237 | * not support indexes.
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| 238 | * - foreign keys: (optional) An array of Schema API foreign keys
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| 239 | * definitions.
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| 240 | */
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| 241 | function hook_field_schema($field) { |
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| 242 | if ($field['type'] == 'text_long') { |
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| 243 | $columns = array( |
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| 244 | 'value' => array( |
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| 245 | 'type' => 'text', |
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| 246 | 'size' => 'big', |
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| 247 | 'not null' => FALSE, |
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| 248 | ), |
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| 249 | ); |
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| 250 | } |
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| 251 | else {
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| 252 | $columns = array( |
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| 253 | 'value' => array( |
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| 254 | 'type' => 'varchar', |
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| 255 | 'length' => $field['settings']['max_length'], |
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| 256 | 'not null' => FALSE, |
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| 257 | ), |
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| 258 | ); |
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| 259 | } |
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| 260 | $columns += array( |
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| 261 | 'format' => array( |
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| 262 | 'type' => 'varchar', |
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| 263 | 'length' => 255, |
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| 264 | 'not null' => FALSE, |
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| 265 | ), |
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| 266 | ); |
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| 267 | return array( |
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| 268 | 'columns' => $columns, |
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| 269 | 'indexes' => array( |
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| 270 | 'format' => array('format'), |
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| 271 | ), |
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| 272 | 'foreign keys' => array( |
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| 273 | 'format' => array( |
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| 274 | 'table' => 'filter_format', |
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| 275 | 'columns' => array('format' => 'format'), |
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| 276 | ), |
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| 277 | ), |
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| 278 | ); |
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| 279 | } |
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| 280 | |||
| 281 | /**
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| 282 | * Define custom load behavior for this module's field types.
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| 283 | *
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| 284 | * Unlike most other field hooks, this hook operates on multiple entities. The
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| 285 | * $entities, $instances and $items parameters are arrays keyed by entity ID.
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| 286 | * For performance reasons, information for all available entity should be
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| 287 | * loaded in a single query where possible.
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| 288 | *
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| 289 | * Note that the changes made to the field values get cached by the field cache
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| 290 | * for subsequent loads. You should never use this hook to load fieldable
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| 291 | * entities, since this is likely to cause infinite recursions when
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| 292 | * hook_field_load() is run on those as well. Use
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| 293 | * hook_field_formatter_prepare_view() instead.
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| 294 | *
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| 295 | * Make changes or additions to field values by altering the $items parameter by
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| 296 | * reference. There is no return value.
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| 297 | *
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| 298 | * @param $entity_type
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| 299 | * The type of $entity.
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| 300 | * @param $entities
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| 301 | * Array of entities being loaded, keyed by entity ID.
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| 302 | * @param $field
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| 303 | * The field structure for the operation.
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| 304 | * @param $instances
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| 305 | * Array of instance structures for $field for each entity, keyed by entity
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| 306 | * ID.
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| 307 | * @param $langcode
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| 308 | * The language code associated with $items.
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| 309 | * @param $items
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| 310 | * Array of field values already loaded for the entities, keyed by entity ID.
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| 311 | * Store your changes in this parameter (passed by reference).
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| 312 | * @param $age
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| 313 | * FIELD_LOAD_CURRENT to load the most recent revision for all fields, or
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| 314 | * FIELD_LOAD_REVISION to load the version indicated by each entity.
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| 315 | */
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| 316 | function hook_field_load($entity_type, $entities, $field, $instances, $langcode, &$items, $age) { |
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| 317 | // Sample code from text.module: precompute sanitized strings so they are
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| 318 | // stored in the field cache.
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| 319 | foreach ($entities as $id => $entity) { |
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| 320 | foreach ($items[$id] as $delta => $item) { |
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| 321 | // Only process items with a cacheable format, the rest will be handled
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| 322 | // by formatters if needed.
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| 323 | if (empty($instances[$id]['settings']['text_processing']) || filter_format_allowcache($item['format'])) { |
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| 324 | $items[$id][$delta]['safe_value'] = isset($item['value']) ? _text_sanitize($instances[$id], $langcode, $item, 'value') : ''; |
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| 325 | if ($field['type'] == 'text_with_summary') { |
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| 326 | $items[$id][$delta]['safe_summary'] = isset($item['summary']) ? _text_sanitize($instances[$id], $langcode, $item, 'summary') : ''; |
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| 327 | } |
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| 328 | } |
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| 329 | } |
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| 330 | } |
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| 331 | } |
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| 332 | |||
| 333 | /**
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| 334 | * Prepare field values prior to display.
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| 335 | *
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| 336 | * This hook is invoked before the field values are handed to formatters
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| 337 | * for display, and runs before the formatters' own
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| 338 | * hook_field_formatter_prepare_view().
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| 339 | *
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| 340 | * Unlike most other field hooks, this hook operates on multiple entities. The
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| 341 | * $entities, $instances and $items parameters are arrays keyed by entity ID.
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| 342 | * For performance reasons, information for all available entities should be
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| 343 | * loaded in a single query where possible.
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| 344 | *
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| 345 | * Make changes or additions to field values by altering the $items parameter by
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| 346 | * reference. There is no return value.
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| 347 | *
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| 348 | * @param $entity_type
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| 349 | * The type of $entity.
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| 350 | * @param $entities
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| 351 | * Array of entities being displayed, keyed by entity ID.
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| 352 | * @param $field
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| 353 | * The field structure for the operation.
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| 354 | * @param $instances
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| 355 | * Array of instance structures for $field for each entity, keyed by entity
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| 356 | * ID.
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| 357 | * @param $langcode
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| 358 | * The language associated to $items.
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| 359 | * @param $items
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| 360 | * $entity->{$field['field_name']}, or an empty array if unset.
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| 361 | */
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| 362 | function hook_field_prepare_view($entity_type, $entities, $field, $instances, $langcode, &$items) { |
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| 363 | // Sample code from image.module: if there are no images specified at all,
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| 364 | // use the default image.
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| 365 | foreach ($entities as $id => $entity) { |
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| 366 | if (empty($items[$id]) && $field['settings']['default_image']) { |
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| 367 | if ($file = file_load($field['settings']['default_image'])) { |
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| 368 | $items[$id][0] = (array) $file + array( |
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| 369 | 'is_default' => TRUE, |
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| 370 | 'alt' => '', |
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| 371 | 'title' => '', |
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| 372 | ); |
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| 373 | } |
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| 374 | } |
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| 375 | } |
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| 376 | } |
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| 377 | |||
| 378 | /**
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| 379 | * Validate this module's field data.
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| 380 | *
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| 381 | * If there are validation problems, add to the $errors array (passed by
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| 382 | * reference). There is no return value.
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| 383 | *
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| 384 | * @param $entity_type
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| 385 | * The type of $entity.
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| 386 | * @param $entity
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| 387 | * The entity for the operation.
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| 388 | * @param $field
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| 389 | * The field structure for the operation.
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| 390 | * @param $instance
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| 391 | * The instance structure for $field on $entity's bundle.
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| 392 | * @param $langcode
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| 393 | * The language associated with $items.
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| 394 | * @param $items
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| 395 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
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| 396 | * @param $errors
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| 397 | * The array of errors (keyed by field name, language code, and delta) that
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| 398 | * have already been reported for the entity. The function should add its
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| 399 | * errors to this array. Each error is an associative array with the following
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| 400 | * keys and values:
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| 401 | * - error: An error code (should be a string prefixed with the module name).
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| 402 | * - message: The human readable message to be displayed.
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| 403 | */
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| 404 | function hook_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) { |
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| 405 | foreach ($items as $delta => $item) { |
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| 406 | if (!empty($item['value'])) { |
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| 407 | if (!empty($field['settings']['max_length']) && drupal_strlen($item['value']) > $field['settings']['max_length']) { |
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| 408 | $errors[$field['field_name']][$langcode][$delta][] = array( |
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| 409 | 'error' => 'text_max_length', |
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| 410 | 'message' => t('%name: the value may not be longer than %max characters.', array('%name' => $instance['label'], '%max' => $field['settings']['max_length'])), |
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| 411 | ); |
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| 412 | } |
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| 413 | } |
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| 414 | } |
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| 415 | } |
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| 416 | |||
| 417 | /**
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| 418 | * Define custom presave behavior for this module's field types.
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| 419 | *
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| 420 | * Make changes or additions to field values by altering the $items parameter by
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| 421 | * reference. There is no return value.
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| 422 | *
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| 423 | * @param $entity_type
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| 424 | * The type of $entity.
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| 425 | * @param $entity
|
||
| 426 | * The entity for the operation.
|
||
| 427 | * @param $field
|
||
| 428 | * The field structure for the operation.
|
||
| 429 | * @param $instance
|
||
| 430 | * The instance structure for $field on $entity's bundle.
|
||
| 431 | * @param $langcode
|
||
| 432 | * The language associated with $items.
|
||
| 433 | * @param $items
|
||
| 434 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
|
||
| 435 | */
|
||
| 436 | function hook_field_presave($entity_type, $entity, $field, $instance, $langcode, &$items) { |
||
| 437 | if ($field['type'] == 'number_decimal') { |
||
| 438 | // Let PHP round the value to ensure consistent behavior across storage
|
||
| 439 | // backends.
|
||
| 440 | foreach ($items as $delta => $item) { |
||
| 441 | if (isset($item['value'])) { |
||
| 442 | $items[$delta]['value'] = round($item['value'], $field['settings']['scale']); |
||
| 443 | } |
||
| 444 | } |
||
| 445 | } |
||
| 446 | } |
||
| 447 | |||
| 448 | /**
|
||
| 449 | * Define custom insert behavior for this module's field data.
|
||
| 450 | *
|
||
| 451 | * This hook is invoked from field_attach_insert() on the module that defines a
|
||
| 452 | * field, during the process of inserting an entity object (node, taxonomy term,
|
||
| 453 | * etc.). It is invoked just before the data for this field on the particular
|
||
| 454 | * entity object is inserted into field storage. Only field modules that are
|
||
| 455 | * storing or tracking information outside the standard field storage mechanism
|
||
| 456 | * need to implement this hook.
|
||
| 457 | *
|
||
| 458 | * @param $entity_type
|
||
| 459 | * The type of $entity.
|
||
| 460 | * @param $entity
|
||
| 461 | * The entity for the operation.
|
||
| 462 | * @param $field
|
||
| 463 | * The field structure for the operation.
|
||
| 464 | * @param $instance
|
||
| 465 | * The instance structure for $field on $entity's bundle.
|
||
| 466 | * @param $langcode
|
||
| 467 | * The language associated with $items.
|
||
| 468 | * @param $items
|
||
| 469 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
|
||
| 470 | *
|
||
| 471 | * @see hook_field_update()
|
||
| 472 | * @see hook_field_delete()
|
||
| 473 | */
|
||
| 474 | function hook_field_insert($entity_type, $entity, $field, $instance, $langcode, &$items) { |
||
| 475 | if (variable_get('taxonomy_maintain_index_table', TRUE) && $field['storage']['type'] == 'field_sql_storage' && $entity_type == 'node' && $entity->status) { |
||
| 476 | $query = db_insert('taxonomy_index')->fields(array('nid', 'tid', 'sticky', 'created', )); |
||
| 477 | foreach ($items as $item) { |
||
| 478 | $query->values(array( |
||
| 479 | 'nid' => $entity->nid, |
||
| 480 | 'tid' => $item['tid'], |
||
| 481 | 'sticky' => $entity->sticky, |
||
| 482 | 'created' => $entity->created, |
||
| 483 | )); |
||
| 484 | } |
||
| 485 | $query->execute();
|
||
| 486 | } |
||
| 487 | } |
||
| 488 | |||
| 489 | /**
|
||
| 490 | * Define custom update behavior for this module's field data.
|
||
| 491 | *
|
||
| 492 | * This hook is invoked from field_attach_update() on the module that defines a
|
||
| 493 | * field, during the process of updating an entity object (node, taxonomy term,
|
||
| 494 | * etc.). It is invoked just before the data for this field on the particular
|
||
| 495 | * entity object is updated into field storage. Only field modules that are
|
||
| 496 | * storing or tracking information outside the standard field storage mechanism
|
||
| 497 | * need to implement this hook.
|
||
| 498 | *
|
||
| 499 | * @param $entity_type
|
||
| 500 | * The type of $entity.
|
||
| 501 | * @param $entity
|
||
| 502 | * The entity for the operation.
|
||
| 503 | * @param $field
|
||
| 504 | * The field structure for the operation.
|
||
| 505 | * @param $instance
|
||
| 506 | * The instance structure for $field on $entity's bundle.
|
||
| 507 | * @param $langcode
|
||
| 508 | * The language associated with $items.
|
||
| 509 | * @param $items
|
||
| 510 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
|
||
| 511 | *
|
||
| 512 | * @see hook_field_insert()
|
||
| 513 | * @see hook_field_delete()
|
||
| 514 | */
|
||
| 515 | function hook_field_update($entity_type, $entity, $field, $instance, $langcode, &$items) { |
||
| 516 | if (variable_get('taxonomy_maintain_index_table', TRUE) && $field['storage']['type'] == 'field_sql_storage' && $entity_type == 'node') { |
||
| 517 | $first_call = &drupal_static(__FUNCTION__, array()); |
||
| 518 | |||
| 519 | // We don't maintain data for old revisions, so clear all previous values
|
||
| 520 | // from the table. Since this hook runs once per field, per object, make
|
||
| 521 | // sure we only wipe values once.
|
||
| 522 | if (!isset($first_call[$entity->nid])) { |
||
| 523 | $first_call[$entity->nid] = FALSE; |
||
| 524 | db_delete('taxonomy_index')->condition('nid', $entity->nid)->execute(); |
||
| 525 | } |
||
| 526 | // Only save data to the table if the node is published.
|
||
| 527 | if ($entity->status) { |
||
| 528 | $query = db_insert('taxonomy_index')->fields(array('nid', 'tid', 'sticky', 'created')); |
||
| 529 | foreach ($items as $item) { |
||
| 530 | $query->values(array( |
||
| 531 | 'nid' => $entity->nid, |
||
| 532 | 'tid' => $item['tid'], |
||
| 533 | 'sticky' => $entity->sticky, |
||
| 534 | 'created' => $entity->created, |
||
| 535 | )); |
||
| 536 | } |
||
| 537 | $query->execute();
|
||
| 538 | } |
||
| 539 | } |
||
| 540 | } |
||
| 541 | |||
| 542 | /**
|
||
| 543 | * Update the storage information for a field.
|
||
| 544 | *
|
||
| 545 | * This is invoked on the field's storage module from field_update_field(),
|
||
| 546 | * before the new field information is saved to the database. The field storage
|
||
| 547 | * module should update its storage tables to agree with the new field
|
||
| 548 | * information. If there is a problem, the field storage module should throw an
|
||
| 549 | * exception.
|
||
| 550 | *
|
||
| 551 | * @param $field
|
||
| 552 | * The updated field structure to be saved.
|
||
| 553 | * @param $prior_field
|
||
| 554 | * The previously-saved field structure.
|
||
| 555 | * @param $has_data
|
||
| 556 | * TRUE if the field has data in storage currently.
|
||
| 557 | */
|
||
| 558 | function hook_field_storage_update_field($field, $prior_field, $has_data) { |
||
| 559 | if (!$has_data) { |
||
| 560 | // There is no data. Re-create the tables completely.
|
||
| 561 | $prior_schema = _field_sql_storage_schema($prior_field); |
||
| 562 | foreach ($prior_schema as $name => $table) { |
||
| 563 | db_drop_table($name, $table); |
||
| 564 | } |
||
| 565 | $schema = _field_sql_storage_schema($field); |
||
| 566 | foreach ($schema as $name => $table) { |
||
| 567 | db_create_table($name, $table); |
||
| 568 | } |
||
| 569 | } |
||
| 570 | else {
|
||
| 571 | // There is data. See field_sql_storage_field_storage_update_field() for
|
||
| 572 | // an example of what to do to modify the schema in place, preserving the
|
||
| 573 | // old data as much as possible.
|
||
| 574 | } |
||
| 575 | drupal_get_schema(NULL, TRUE); |
||
| 576 | } |
||
| 577 | |||
| 578 | /**
|
||
| 579 | * Define custom delete behavior for this module's field data.
|
||
| 580 | *
|
||
| 581 | * This hook is invoked from field_attach_delete() on the module that defines a
|
||
| 582 | * field, during the process of deleting an entity object (node, taxonomy term,
|
||
| 583 | * etc.). It is invoked just before the data for this field on the particular
|
||
| 584 | * entity object is deleted from field storage. Only field modules that are
|
||
| 585 | * storing or tracking information outside the standard field storage mechanism
|
||
| 586 | * need to implement this hook.
|
||
| 587 | *
|
||
| 588 | * @param $entity_type
|
||
| 589 | * The type of $entity.
|
||
| 590 | * @param $entity
|
||
| 591 | * The entity for the operation.
|
||
| 592 | * @param $field
|
||
| 593 | * The field structure for the operation.
|
||
| 594 | * @param $instance
|
||
| 595 | * The instance structure for $field on $entity's bundle.
|
||
| 596 | * @param $langcode
|
||
| 597 | * The language associated with $items.
|
||
| 598 | * @param $items
|
||
| 599 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
|
||
| 600 | *
|
||
| 601 | * @see hook_field_insert()
|
||
| 602 | * @see hook_field_update()
|
||
| 603 | */
|
||
| 604 | function hook_field_delete($entity_type, $entity, $field, $instance, $langcode, &$items) { |
||
| 605 | list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity); |
||
| 606 | foreach ($items as $delta => $item) { |
||
| 607 | // For hook_file_references(), remember that this is being deleted.
|
||
| 608 | $item['file_field_name'] = $field['field_name']; |
||
| 609 | // Pass in the ID of the object that is being removed so all references can
|
||
| 610 | // be counted in hook_file_references().
|
||
| 611 | $item['file_field_type'] = $entity_type; |
||
| 612 | $item['file_field_id'] = $id; |
||
| 613 | file_field_delete_file($item, $field, $entity_type, $id); |
||
| 614 | } |
||
| 615 | } |
||
| 616 | |||
| 617 | /**
|
||
| 618 | * Define custom revision delete behavior for this module's field types.
|
||
| 619 | *
|
||
| 620 | * This hook is invoked just before the data is deleted from field storage
|
||
| 621 | * in field_attach_delete_revision(), and will only be called for fieldable
|
||
| 622 | * types that are versioned.
|
||
| 623 | *
|
||
| 624 | * @param $entity_type
|
||
| 625 | * The type of $entity.
|
||
| 626 | * @param $entity
|
||
| 627 | * The entity for the operation.
|
||
| 628 | * @param $field
|
||
| 629 | * The field structure for the operation.
|
||
| 630 | * @param $instance
|
||
| 631 | * The instance structure for $field on $entity's bundle.
|
||
| 632 | * @param $langcode
|
||
| 633 | * The language associated with $items.
|
||
| 634 | * @param $items
|
||
| 635 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
|
||
| 636 | */
|
||
| 637 | function hook_field_delete_revision($entity_type, $entity, $field, $instance, $langcode, &$items) { |
||
| 638 | list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity); |
||
| 639 | foreach ($items as $delta => $item) { |
||
| 640 | // For hook_file_references, remember that this file is being deleted.
|
||
| 641 | $item['file_field_name'] = $field['field_name']; |
||
| 642 | if (file_field_delete_file($item, $field, $entity_type, $id)) { |
||
| 643 | $items[$delta] = NULL; |
||
| 644 | } |
||
| 645 | } |
||
| 646 | } |
||
| 647 | |||
| 648 | /**
|
||
| 649 | * Define custom prepare_translation behavior for this module's field types.
|
||
| 650 | *
|
||
| 651 | * @param $entity_type
|
||
| 652 | * The type of $entity.
|
||
| 653 | * @param $entity
|
||
| 654 | * The entity for the operation.
|
||
| 655 | * @param $field
|
||
| 656 | * The field structure for the operation.
|
||
| 657 | * @param $instance
|
||
| 658 | * The instance structure for $field on $entity's bundle.
|
||
| 659 | * @param $langcode
|
||
| 660 | * The language associated to $items.
|
||
| 661 | * @param $items
|
||
| 662 | * $entity->{$field['field_name']}[$langcode], or an empty array if unset.
|
||
| 663 | * @param $source_entity
|
||
| 664 | * The source entity from which field values are being copied.
|
||
| 665 | * @param $source_langcode
|
||
| 666 | * The source language from which field values are being copied.
|
||
| 667 | 4444412d | Julien Enselme | *
|
| 668 | * @ingroup field_language
|
||
| 669 | 85ad3d82 | Assos Assos | */
|
| 670 | function hook_field_prepare_translation($entity_type, $entity, $field, $instance, $langcode, &$items, $source_entity, $source_langcode) { |
||
| 671 | // If the translating user is not permitted to use the assigned text format,
|
||
| 672 | // we must not expose the source values.
|
||
| 673 | $field_name = $field['field_name']; |
||
| 674 | $formats = filter_formats();
|
||
| 675 | $format_id = $source_entity->{$field_name}[$source_langcode][0]['format']; |
||
| 676 | if (!filter_access($formats[$format_id])) { |
||
| 677 | $items = array(); |
||
| 678 | } |
||
| 679 | } |
||
| 680 | |||
| 681 | /**
|
||
| 682 | * Define what constitutes an empty item for a field type.
|
||
| 683 | *
|
||
| 684 | * @param $item
|
||
| 685 | * An item that may or may not be empty.
|
||
| 686 | * @param $field
|
||
| 687 | * The field to which $item belongs.
|
||
| 688 | *
|
||
| 689 | * @return
|
||
| 690 | * TRUE if $field's type considers $item not to contain any data;
|
||
| 691 | * FALSE otherwise.
|
||
| 692 | */
|
||
| 693 | function hook_field_is_empty($item, $field) { |
||
| 694 | if (empty($item['value']) && (string) $item['value'] !== '0') { |
||
| 695 | return TRUE; |
||
| 696 | } |
||
| 697 | return FALSE; |
||
| 698 | } |
||
| 699 | |||
| 700 | /**
|
||
| 701 | * @} End of "defgroup field_types".
|
||
| 702 | */
|
||
| 703 | |||
| 704 | /**
|
||
| 705 | * @defgroup field_widget Field Widget API
|
||
| 706 | * @{
|
||
| 707 | * Define Field API widget types.
|
||
| 708 | *
|
||
| 709 | * Field API widgets specify how fields are displayed in edit forms. Fields of a
|
||
| 710 | * given @link field_types field type @endlink may be edited using more than one
|
||
| 711 | * widget. In this case, the Field UI module allows the site builder to choose
|
||
| 712 | * which widget to use. Widget types are defined by implementing
|
||
| 713 | * hook_field_widget_info().
|
||
| 714 | *
|
||
| 715 | * Widgets are @link forms_api_reference.html Form API @endlink elements with
|
||
| 716 | * additional processing capabilities. Widget hooks are typically called by the
|
||
| 717 | * Field Attach API during the creation of the field form structure with
|
||
| 718 | * field_attach_form().
|
||
| 719 | *
|
||
| 720 | * @see field
|
||
| 721 | * @see field_types
|
||
| 722 | * @see field_formatter
|
||
| 723 | */
|
||
| 724 | |||
| 725 | /**
|
||
| 726 | * Expose Field API widget types.
|
||
| 727 | *
|
||
| 728 | * @return
|
||
| 729 | * An array describing the widget types implemented by the module.
|
||
| 730 | * The keys are widget type names. To avoid name clashes, widget type
|
||
| 731 | * names should be prefixed with the name of the module that exposes them.
|
||
| 732 | * The values are arrays describing the widget type, with the following
|
||
| 733 | * key/value pairs:
|
||
| 734 | * - label: The human-readable name of the widget type.
|
||
| 735 | * - description: A short description for the widget type.
|
||
| 736 | * - field types: An array of field types the widget supports.
|
||
| 737 | * - settings: An array whose keys are the names of the settings available
|
||
| 738 | * for the widget type, and whose values are the default values for those
|
||
| 739 | * settings.
|
||
| 740 | * - behaviors: (optional) An array describing behaviors of the widget, with
|
||
| 741 | * the following elements:
|
||
| 742 | * - multiple values: One of the following constants:
|
||
| 743 | * - FIELD_BEHAVIOR_DEFAULT: (default) If the widget allows the input of
|
||
| 744 | * one single field value (most common case). The widget will be
|
||
| 745 | * repeated for each value input.
|
||
| 746 | * - FIELD_BEHAVIOR_CUSTOM: If one single copy of the widget can receive
|
||
| 747 | * several field values. Examples: checkboxes, multiple select,
|
||
| 748 | * comma-separated textfield.
|
||
| 749 | * - default value: One of the following constants:
|
||
| 750 | * - FIELD_BEHAVIOR_DEFAULT: (default) If the widget accepts default
|
||
| 751 | * values.
|
||
| 752 | * - FIELD_BEHAVIOR_NONE: if the widget does not support default values.
|
||
| 753 | * - weight: (optional) An integer to determine the weight of this widget
|
||
| 754 | * relative to other widgets in the Field UI when selecting a widget for a
|
||
| 755 | * given field instance.
|
||
| 756 | *
|
||
| 757 | * @see hook_field_widget_info_alter()
|
||
| 758 | * @see hook_field_widget_form()
|
||
| 759 | * @see hook_field_widget_form_alter()
|
||
| 760 | * @see hook_field_widget_WIDGET_TYPE_form_alter()
|
||
| 761 | * @see hook_field_widget_error()
|
||
| 762 | * @see hook_field_widget_settings_form()
|
||
| 763 | */
|
||
| 764 | function hook_field_widget_info() { |
||
| 765 | return array( |
||
| 766 | 'text_textfield' => array( |
||
| 767 | 'label' => t('Text field'), |
||
| 768 | 'field types' => array('text'), |
||
| 769 | 'settings' => array('size' => 60), |
||
| 770 | 'behaviors' => array( |
||
| 771 | 'multiple values' => FIELD_BEHAVIOR_DEFAULT, |
||
| 772 | 'default value' => FIELD_BEHAVIOR_DEFAULT, |
||
| 773 | ), |
||
| 774 | ), |
||
| 775 | 'text_textarea' => array( |
||
| 776 | 'label' => t('Text area (multiple rows)'), |
||
| 777 | 'field types' => array('text_long'), |
||
| 778 | 'settings' => array('rows' => 5), |
||
| 779 | 'behaviors' => array( |
||
| 780 | 'multiple values' => FIELD_BEHAVIOR_DEFAULT, |
||
| 781 | 'default value' => FIELD_BEHAVIOR_DEFAULT, |
||
| 782 | ), |
||
| 783 | ), |
||
| 784 | 'text_textarea_with_summary' => array( |
||
| 785 | 'label' => t('Text area with a summary'), |
||
| 786 | 'field types' => array('text_with_summary'), |
||
| 787 | 'settings' => array('rows' => 20, 'summary_rows' => 5), |
||
| 788 | 'behaviors' => array( |
||
| 789 | 'multiple values' => FIELD_BEHAVIOR_DEFAULT, |
||
| 790 | 'default value' => FIELD_BEHAVIOR_DEFAULT, |
||
| 791 | ), |
||
| 792 | // As an advanced widget, force it to sink to the bottom of the choices.
|
||
| 793 | 'weight' => 2, |
||
| 794 | ), |
||
| 795 | ); |
||
| 796 | } |
||
| 797 | |||
| 798 | /**
|
||
| 799 | * Perform alterations on Field API widget types.
|
||
| 800 | *
|
||
| 801 | * @param $info
|
||
| 802 | * Array of informations on widget types exposed by hook_field_widget_info()
|
||
| 803 | * implementations.
|
||
| 804 | */
|
||
| 805 | function hook_field_widget_info_alter(&$info) { |
||
| 806 | // Add a setting to a widget type.
|
||
| 807 | $info['text_textfield']['settings'] += array( |
||
| 808 | 'mymodule_additional_setting' => 'default value', |
||
| 809 | ); |
||
| 810 | |||
| 811 | // Let a new field type re-use an existing widget.
|
||
| 812 | $info['options_select']['field types'][] = 'my_field_type'; |
||
| 813 | } |
||
| 814 | |||
| 815 | /**
|
||
| 816 | * Return the form for a single field widget.
|
||
| 817 | *
|
||
| 818 | * Field widget form elements should be based on the passed-in $element, which
|
||
| 819 | * contains the base form element properties derived from the field
|
||
| 820 | * configuration.
|
||
| 821 | *
|
||
| 822 | * Field API will set the weight, field name and delta values for each form
|
||
| 823 | * element. If there are multiple values for this field, the Field API will
|
||
| 824 | * invoke this hook as many times as needed.
|
||
| 825 | *
|
||
| 826 | * Note that, depending on the context in which the widget is being included
|
||
| 827 | * (regular entity form, field configuration form, advanced search form...),
|
||
| 828 | * the values for $field and $instance might be different from the "official"
|
||
| 829 | * definitions returned by field_info_field() and field_info_instance().
|
||
| 830 | * Examples: mono-value widget even if the field is multi-valued, non-required
|
||
| 831 | * widget even if the field is 'required'...
|
||
| 832 | *
|
||
| 833 | * Therefore, the FAPI element callbacks (such as #process, #element_validate,
|
||
| 834 | * #value_callback...) used by the widget cannot use the field_info_field()
|
||
| 835 | * or field_info_instance() functions to retrieve the $field or $instance
|
||
| 836 | * definitions they should operate on. The field_widget_field() and
|
||
| 837 | * field_widget_instance() functions should be used instead to fetch the
|
||
| 838 | * current working definitions from $form_state, where Field API stores them.
|
||
| 839 | *
|
||
| 840 | * Alternatively, hook_field_widget_form() can extract the needed specific
|
||
| 841 | * properties from $field and $instance and set them as ad-hoc
|
||
| 842 | * $element['#custom'] properties, for later use by its element callbacks.
|
||
| 843 | *
|
||
| 844 | * Other modules may alter the form element provided by this function using
|
||
| 845 | * hook_field_widget_form_alter().
|
||
| 846 | *
|
||
| 847 | * @param $form
|
||
| 848 | * The form structure where widgets are being attached to. This might be a
|
||
| 849 | * full form structure, or a sub-element of a larger form.
|
||
| 850 | * @param $form_state
|
||
| 851 | * An associative array containing the current state of the form.
|
||
| 852 | * @param $field
|
||
| 853 | * The field structure.
|
||
| 854 | * @param $instance
|
||
| 855 | * The field instance.
|
||
| 856 | * @param $langcode
|
||
| 857 | * The language associated with $items.
|
||
| 858 | * @param $items
|
||
| 859 | * Array of default values for this field.
|
||
| 860 | * @param $delta
|
||
| 861 | * The order of this item in the array of subelements (0, 1, 2, etc).
|
||
| 862 | * @param $element
|
||
| 863 | * A form element array containing basic properties for the widget:
|
||
| 864 | * - #entity_type: The name of the entity the field is attached to.
|
||
| 865 | * - #bundle: The name of the field bundle the field is contained in.
|
||
| 866 | * - #field_name: The name of the field.
|
||
| 867 | * - #language: The language the field is being edited in.
|
||
| 868 | * - #field_parents: The 'parents' space for the field in the form. Most
|
||
| 869 | * widgets can simply overlook this property. This identifies the
|
||
| 870 | * location where the field values are placed within
|
||
| 871 | * $form_state['values'], and is used to access processing information
|
||
| 872 | * for the field through the field_form_get_state() and
|
||
| 873 | * field_form_set_state() functions.
|
||
| 874 | * - #columns: A list of field storage columns of the field.
|
||
| 875 | * - #title: The sanitized element label for the field instance, ready for
|
||
| 876 | * output.
|
||
| 877 | * - #description: The sanitized element description for the field instance,
|
||
| 878 | * ready for output.
|
||
| 879 | * - #required: A Boolean indicating whether the element value is required;
|
||
| 880 | * for required multiple value fields, only the first widget's values are
|
||
| 881 | * required.
|
||
| 882 | * - #delta: The order of this item in the array of subelements; see $delta
|
||
| 883 | * above.
|
||
| 884 | *
|
||
| 885 | * @return
|
||
| 886 | * The form elements for a single widget for this field.
|
||
| 887 | *
|
||
| 888 | * @see field_widget_field()
|
||
| 889 | * @see field_widget_instance()
|
||
| 890 | * @see hook_field_widget_form_alter()
|
||
| 891 | * @see hook_field_widget_WIDGET_TYPE_form_alter()
|
||
| 892 | */
|
||
| 893 | function hook_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) { |
||
| 894 | $element += array( |
||
| 895 | '#type' => $instance['widget']['type'], |
||
| 896 | '#default_value' => isset($items[$delta]) ? $items[$delta] : '', |
||
| 897 | ); |
||
| 898 | return array('value' => $element); |
||
| 899 | } |
||
| 900 | |||
| 901 | /**
|
||
| 902 | * Alter forms for field widgets provided by other modules.
|
||
| 903 | *
|
||
| 904 | * @param $element
|
||
| 905 | * The field widget form element as constructed by hook_field_widget_form().
|
||
| 906 | * @param $form_state
|
||
| 907 | * An associative array containing the current state of the form.
|
||
| 908 | * @param $context
|
||
| 909 | * An associative array containing the following key-value pairs, matching the
|
||
| 910 | * arguments received by hook_field_widget_form():
|
||
| 911 | * - form: The form structure to which widgets are being attached. This may be
|
||
| 912 | * a full form structure, or a sub-element of a larger form.
|
||
| 913 | * - field: The field structure.
|
||
| 914 | * - instance: The field instance structure.
|
||
| 915 | * - langcode: The language associated with $items.
|
||
| 916 | * - items: Array of default values for this field.
|
||
| 917 | * - delta: The order of this item in the array of subelements (0, 1, 2, etc).
|
||
| 918 | *
|
||
| 919 | * @see hook_field_widget_form()
|
||
| 920 | * @see hook_field_widget_WIDGET_TYPE_form_alter()
|
||
| 921 | */
|
||
| 922 | function hook_field_widget_form_alter(&$element, &$form_state, $context) { |
||
| 923 | // Add a css class to widget form elements for all fields of type mytype.
|
||
| 924 | if ($context['field']['type'] == 'mytype') { |
||
| 925 | // Be sure not to overwrite existing attributes.
|
||
| 926 | $element['#attributes']['class'][] = 'myclass'; |
||
| 927 | } |
||
| 928 | } |
||
| 929 | |||
| 930 | /**
|
||
| 931 | * Alter widget forms for a specific widget provided by another module.
|
||
| 932 | *
|
||
| 933 | * Modules can implement hook_field_widget_WIDGET_TYPE_form_alter() to modify a
|
||
| 934 | * specific widget form, rather than using hook_field_widget_form_alter() and
|
||
| 935 | * checking the widget type.
|
||
| 936 | *
|
||
| 937 | * @param $element
|
||
| 938 | * The field widget form element as constructed by hook_field_widget_form().
|
||
| 939 | * @param $form_state
|
||
| 940 | * An associative array containing the current state of the form.
|
||
| 941 | * @param $context
|
||
| 942 | * An associative array containing the following key-value pairs, matching the
|
||
| 943 | * arguments received by hook_field_widget_form():
|
||
| 944 | * - "form": The form structure where widgets are being attached to. This
|
||
| 945 | * might be a full form structure, or a sub-element of a larger form.
|
||
| 946 | * - "field": The field structure.
|
||
| 947 | * - "instance": The field instance structure.
|
||
| 948 | * - "langcode": The language associated with $items.
|
||
| 949 | * - "items": Array of default values for this field.
|
||
| 950 | * - "delta": The order of this item in the array of subelements (0, 1, 2,
|
||
| 951 | * etc).
|
||
| 952 | *
|
||
| 953 | * @see hook_field_widget_form()
|
||
| 954 | * @see hook_field_widget_form_alter()
|
||
| 955 | */
|
||
| 956 | function hook_field_widget_WIDGET_TYPE_form_alter(&$element, &$form_state, $context) { |
||
| 957 | // Code here will only act on widgets of type WIDGET_TYPE. For example,
|
||
| 958 | // hook_field_widget_mymodule_autocomplete_form_alter() will only act on
|
||
| 959 | // widgets of type 'mymodule_autocomplete'.
|
||
| 960 | $element['#autocomplete_path'] = 'mymodule/autocomplete_path'; |
||
| 961 | } |
||
| 962 | |||
| 963 | /**
|
||
| 964 | * Alters the widget properties of a field instance before it gets displayed.
|
||
| 965 | *
|
||
| 966 | * Note that instead of hook_field_widget_properties_alter(), which is called
|
||
| 967 | * for all fields on all entity types,
|
||
| 968 | * hook_field_widget_properties_ENTITY_TYPE_alter() may be used to alter widget
|
||
| 969 | * properties for fields on a specific entity type only.
|
||
| 970 | *
|
||
| 971 | * This hook is called once per field per added or edit entity. If the result
|
||
| 972 | * of the hook involves reading from the database, it is highly recommended to
|
||
| 973 | * statically cache the information.
|
||
| 974 | *
|
||
| 975 | * @param $widget
|
||
| 976 | * The instance's widget properties.
|
||
| 977 | * @param $context
|
||
| 978 | * An associative array containing:
|
||
| 979 | * - entity_type: The entity type; e.g., 'node' or 'user'.
|
||
| 980 | * - entity: The entity object.
|
||
| 981 | * - field: The field that the widget belongs to.
|
||
| 982 | * - instance: The instance of the field.
|
||
| 983 | *
|
||
| 984 | * @see hook_field_widget_properties_ENTITY_TYPE_alter()
|
||
| 985 | */
|
||
| 986 | function hook_field_widget_properties_alter(&$widget, $context) { |
||
| 987 | // Change a widget's type according to the time of day.
|
||
| 988 | $field = $context['field']; |
||
| 989 | if ($context['entity_type'] == 'node' && $field['field_name'] == 'field_foo') { |
||
| 990 | $time = date('H'); |
||
| 991 | $widget['type'] = $time < 12 ? 'widget_am' : 'widget_pm'; |
||
| 992 | } |
||
| 993 | } |
||
| 994 | |||
| 995 | /**
|
||
| 996 | * Flag a field-level validation error.
|
||
| 997 | *
|
||
| 998 | * @param $element
|
||
| 999 | * An array containing the form element for the widget. The error needs to be
|
||
| 1000 | * flagged on the right sub-element, according to the widget's internal
|
||
| 1001 | * structure.
|
||
| 1002 | * @param $error
|
||
| 1003 | * An associative array with the following key-value pairs, as returned by
|
||
| 1004 | * hook_field_validate():
|
||
| 1005 | * - error: the error code. Complex widgets might need to report different
|
||
| 1006 | * errors to different form elements inside the widget.
|
||
| 1007 | * - message: the human readable message to be displayed.
|
||
| 1008 | * @param $form
|
||
| 1009 | * The form structure where field elements are attached to. This might be a
|
||
| 1010 | * full form structure, or a sub-element of a larger form.
|
||
| 1011 | * @param $form_state
|
||
| 1012 | * An associative array containing the current state of the form.
|
||
| 1013 | */
|
||
| 1014 | function hook_field_widget_error($element, $error, $form, &$form_state) { |
||
| 1015 | form_error($element, $error['message']); |
||
| 1016 | } |
||
| 1017 | |||
| 1018 | |||
| 1019 | /**
|
||
| 1020 | * @} End of "defgroup field_widget".
|
||
| 1021 | */
|
||
| 1022 | |||
| 1023 | |||
| 1024 | /**
|
||
| 1025 | * @defgroup field_formatter Field Formatter API
|
||
| 1026 | * @{
|
||
| 1027 | * Define Field API formatter types.
|
||
| 1028 | *
|
||
| 1029 | * Field API formatters specify how fields are displayed when the entity to
|
||
| 1030 | * which the field is attached is displayed. Fields of a given
|
||
| 1031 | * @link field_types field type @endlink may be displayed using more than one
|
||
| 1032 | * formatter. In this case, the Field UI module allows the site builder to
|
||
| 1033 | * choose which formatter to use. Field formatters are defined by implementing
|
||
| 1034 | * hook_field_formatter_info().
|
||
| 1035 | *
|
||
| 1036 | * @see field
|
||
| 1037 | * @see field_types
|
||
| 1038 | * @see field_widget
|
||
| 1039 | */
|
||
| 1040 | |||
| 1041 | /**
|
||
| 1042 | * Expose Field API formatter types.
|
||
| 1043 | *
|
||
| 1044 | * Formatters handle the display of field values. Formatter hooks are typically
|
||
| 1045 | * called by the Field Attach API field_attach_prepare_view() and
|
||
| 1046 | * field_attach_view() functions.
|
||
| 1047 | *
|
||
| 1048 | * @return
|
||
| 1049 | * An array describing the formatter types implemented by the module.
|
||
| 1050 | * The keys are formatter type names. To avoid name clashes, formatter type
|
||
| 1051 | * names should be prefixed with the name of the module that exposes them.
|
||
| 1052 | * The values are arrays describing the formatter type, with the following
|
||
| 1053 | * key/value pairs:
|
||
| 1054 | * - label: The human-readable name of the formatter type.
|
||
| 1055 | * - description: A short description for the formatter type.
|
||
| 1056 | * - field types: An array of field types the formatter supports.
|
||
| 1057 | * - settings: An array whose keys are the names of the settings available
|
||
| 1058 | * for the formatter type, and whose values are the default values for
|
||
| 1059 | * those settings.
|
||
| 1060 | *
|
||
| 1061 | * @see hook_field_formatter_info_alter()
|
||
| 1062 | * @see hook_field_formatter_view()
|
||
| 1063 | * @see hook_field_formatter_prepare_view()
|
||
| 1064 | */
|
||
| 1065 | function hook_field_formatter_info() { |
||
| 1066 | return array( |
||
| 1067 | 'text_default' => array( |
||
| 1068 | 'label' => t('Default'), |
||
| 1069 | 'field types' => array('text', 'text_long', 'text_with_summary'), |
||
| 1070 | ), |
||
| 1071 | 'text_plain' => array( |
||
| 1072 | 'label' => t('Plain text'), |
||
| 1073 | 'field types' => array('text', 'text_long', 'text_with_summary'), |
||
| 1074 | ), |
||
| 1075 | |||
| 1076 | // The text_trimmed formatter displays the trimmed version of the
|
||
| 1077 | // full element of the field. It is intended to be used with text
|
||
| 1078 | // and text_long fields. It also works with text_with_summary
|
||
| 1079 | // fields though the text_summary_or_trimmed formatter makes more
|
||
| 1080 | // sense for that field type.
|
||
| 1081 | 'text_trimmed' => array( |
||
| 1082 | 'label' => t('Trimmed'), |
||
| 1083 | 'field types' => array('text', 'text_long', 'text_with_summary'), |
||
| 1084 | ), |
||
| 1085 | |||
| 1086 | // The 'summary or trimmed' field formatter for text_with_summary
|
||
| 1087 | // fields displays returns the summary element of the field or, if
|
||
| 1088 | // the summary is empty, the trimmed version of the full element
|
||
| 1089 | // of the field.
|
||
| 1090 | 'text_summary_or_trimmed' => array( |
||
| 1091 | 'label' => t('Summary or trimmed'), |
||
| 1092 | 'field types' => array('text_with_summary'), |
||
| 1093 | ), |
||
| 1094 | ); |
||
| 1095 | } |
||
| 1096 | |||
| 1097 | /**
|
||
| 1098 | * Perform alterations on Field API formatter types.
|
||
| 1099 | *
|
||
| 1100 | * @param $info
|
||
| 1101 | * An array of information on formatter types exposed by
|
||
| 1102 | * hook_field_formatter_info() implementations.
|
||
| 1103 | */
|
||
| 1104 | function hook_field_formatter_info_alter(&$info) { |
||
| 1105 | // Add a setting to a formatter type.
|
||
| 1106 | $info['text_default']['settings'] += array( |
||
| 1107 | 'mymodule_additional_setting' => 'default value', |
||
| 1108 | ); |
||
| 1109 | |||
| 1110 | // Let a new field type re-use an existing formatter.
|
||
| 1111 | $info['text_default']['field types'][] = 'my_field_type'; |
||
| 1112 | } |
||
| 1113 | |||
| 1114 | /**
|
||
| 1115 | * Allow formatters to load information for field values being displayed.
|
||
| 1116 | *
|
||
| 1117 | * This should be used when a formatter needs to load additional information
|
||
| 1118 | * from the database in order to render a field, for example a reference field
|
||
| 1119 | * which displays properties of the referenced entities such as name or type.
|
||
| 1120 | *
|
||
| 1121 | * This hook is called after the field type's own hook_field_prepare_view().
|
||
| 1122 | *
|
||
| 1123 | * Unlike most other field hooks, this hook operates on multiple entities. The
|
||
| 1124 | * $entities, $instances and $items parameters are arrays keyed by entity ID.
|
||
| 1125 | * For performance reasons, information for all available entities should be
|
||
| 1126 | * loaded in a single query where possible.
|
||
| 1127 | *
|
||
| 1128 | * @param $entity_type
|
||
| 1129 | * The type of $entity.
|
||
| 1130 | * @param $entities
|
||
| 1131 | * Array of entities being displayed, keyed by entity ID.
|
||
| 1132 | * @param $field
|
||
| 1133 | * The field structure for the operation.
|
||
| 1134 | * @param $instances
|
||
| 1135 | * Array of instance structures for $field for each entity, keyed by entity
|
||
| 1136 | * ID.
|
||
| 1137 | * @param $langcode
|
||
| 1138 | * The language the field values are to be shown in. If no language is
|
||
| 1139 | * provided the current language is used.
|
||
| 1140 | * @param $items
|
||
| 1141 | * Array of field values for the entities, keyed by entity ID.
|
||
| 1142 | * @param $displays
|
||
| 1143 | * Array of display settings to use for each entity, keyed by entity ID.
|
||
| 1144 | *
|
||
| 1145 | * @return
|
||
| 1146 | * Changes or additions to field values are done by altering the $items
|
||
| 1147 | * parameter by reference.
|
||
| 1148 | */
|
||
| 1149 | function hook_field_formatter_prepare_view($entity_type, $entities, $field, $instances, $langcode, &$items, $displays) { |
||
| 1150 | $tids = array(); |
||
| 1151 | |||
| 1152 | // Collect every possible term attached to any of the fieldable entities.
|
||
| 1153 | foreach ($entities as $id => $entity) { |
||
| 1154 | foreach ($items[$id] as $delta => $item) { |
||
| 1155 | // Force the array key to prevent duplicates.
|
||
| 1156 | $tids[$item['tid']] = $item['tid']; |
||
| 1157 | } |
||
| 1158 | } |
||
| 1159 | |||
| 1160 | if ($tids) { |
||
| 1161 | $terms = taxonomy_term_load_multiple($tids); |
||
| 1162 | |||
| 1163 | // Iterate through the fieldable entities again to attach the loaded term
|
||
| 1164 | // data.
|
||
| 1165 | foreach ($entities as $id => $entity) { |
||
| 1166 | $rekey = FALSE; |
||
| 1167 | |||
| 1168 | foreach ($items[$id] as $delta => $item) { |
||
| 1169 | // Check whether the taxonomy term field instance value could be loaded.
|
||
| 1170 | if (isset($terms[$item['tid']])) { |
||
| 1171 | // Replace the instance value with the term data.
|
||
| 1172 | $items[$id][$delta]['taxonomy_term'] = $terms[$item['tid']]; |
||
| 1173 | } |
||
| 1174 | // Otherwise, unset the instance value, since the term does not exist.
|
||
| 1175 | else {
|
||
| 1176 | unset($items[$id][$delta]); |
||
| 1177 | $rekey = TRUE; |
||
| 1178 | } |
||
| 1179 | } |
||
| 1180 | |||
| 1181 | if ($rekey) { |
||
| 1182 | // Rekey the items array.
|
||
| 1183 | $items[$id] = array_values($items[$id]); |
||
| 1184 | } |
||
| 1185 | } |
||
| 1186 | } |
||
| 1187 | } |
||
| 1188 | |||
| 1189 | /**
|
||
| 1190 | * Build a renderable array for a field value.
|
||
| 1191 | *
|
||
| 1192 | * @param $entity_type
|
||
| 1193 | * The type of $entity.
|
||
| 1194 | * @param $entity
|
||
| 1195 | * The entity being displayed.
|
||
| 1196 | * @param $field
|
||
| 1197 | * The field structure.
|
||
| 1198 | * @param $instance
|
||
| 1199 | * The field instance.
|
||
| 1200 | * @param $langcode
|
||
| 1201 | * The language associated with $items.
|
||
| 1202 | * @param $items
|
||
| 1203 | * Array of values for this field.
|
||
| 1204 | * @param $display
|
||
| 1205 | * The display settings to use, as found in the 'display' entry of instance
|
||
| 1206 | * definitions. The array notably contains the following keys and values;
|
||
| 1207 | * - type: The name of the formatter to use.
|
||
| 1208 | * - settings: The array of formatter settings.
|
||
| 1209 | *
|
||
| 1210 | * @return
|
||
| 1211 | * A renderable array for the $items, as an array of child elements keyed
|
||
| 1212 | * by numeric indexes starting from 0.
|
||
| 1213 | */
|
||
| 1214 | function hook_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) { |
||
| 1215 | $element = array(); |
||
| 1216 | $settings = $display['settings']; |
||
| 1217 | |||
| 1218 | switch ($display['type']) { |
||
| 1219 | case 'sample_field_formatter_simple': |
||
| 1220 | // Common case: each value is displayed individually in a sub-element
|
||
| 1221 | // keyed by delta. The field.tpl.php template specifies the markup
|
||
| 1222 | // wrapping each value.
|
||
| 1223 | foreach ($items as $delta => $item) { |
||
| 1224 | $element[$delta] = array('#markup' => $settings['some_setting'] . $item['value']); |
||
| 1225 | } |
||
| 1226 | break;
|
||
| 1227 | |||
| 1228 | case 'sample_field_formatter_themeable': |
||
| 1229 | // More elaborate formatters can defer to a theme function for easier
|
||
| 1230 | // customization.
|
||
| 1231 | foreach ($items as $delta => $item) { |
||
| 1232 | $element[$delta] = array( |
||
| 1233 | '#theme' => 'mymodule_theme_sample_field_formatter_themeable', |
||
| 1234 | '#data' => $item['value'], |
||
| 1235 | '#some_setting' => $settings['some_setting'], |
||
| 1236 | ); |
||
| 1237 | } |
||
| 1238 | break;
|
||
| 1239 | |||
| 1240 | case 'sample_field_formatter_combined': |
||
| 1241 | // Some formatters might need to display all values within a single piece
|
||
| 1242 | // of markup.
|
||
| 1243 | $rows = array(); |
||
| 1244 | foreach ($items as $delta => $item) { |
||
| 1245 | $rows[] = array($delta, $item['value']); |
||
| 1246 | } |
||
| 1247 | $element[0] = array( |
||
| 1248 | '#theme' => 'table', |
||
| 1249 | '#header' => array(t('Delta'), t('Value')), |
||
| 1250 | '#rows' => $rows, |
||
| 1251 | ); |
||
| 1252 | break;
|
||
| 1253 | } |
||
| 1254 | |||
| 1255 | return $element; |
||
| 1256 | } |
||
| 1257 | |||
| 1258 | /**
|
||
| 1259 | * @} End of "defgroup field_formatter".
|
||
| 1260 | */
|
||
| 1261 | |||
| 1262 | /**
|
||
| 1263 | 4444412d | Julien Enselme | * @addtogroup field_attach
|
| 1264 | 85ad3d82 | Assos Assos | * @{
|
| 1265 | */
|
||
| 1266 | |||
| 1267 | /**
|
||
| 1268 | * Act on field_attach_form().
|
||
| 1269 | *
|
||
| 1270 | * This hook is invoked after the field module has performed the operation.
|
||
| 1271 | * Implementing modules should alter the $form or $form_state parameters.
|
||
| 1272 | *
|
||
| 1273 | * @param $entity_type
|
||
| 1274 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 1275 | * @param $entity
|
||
| 1276 | * The entity for which an edit form is being built.
|
||
| 1277 | * @param $form
|
||
| 1278 | * The form structure where field elements are attached to. This might be a
|
||
| 1279 | * full form structure, or a sub-element of a larger form. The
|
||
| 1280 | * $form['#parents'] property can be used to identify the corresponding part
|
||
| 1281 | * of $form_state['values']. Hook implementations that need to act on the
|
||
| 1282 | * top-level properties of the global form (like #submit, #validate...) can
|
||
| 1283 | * add a #process callback to the array received in the $form parameter, and
|
||
| 1284 | * act on the $complete_form parameter in the process callback.
|
||
| 1285 | * @param $form_state
|
||
| 1286 | * An associative array containing the current state of the form.
|
||
| 1287 | * @param $langcode
|
||
| 1288 | * The language the field values are going to be entered in. If no language
|
||
| 1289 | * is provided the default site language will be used.
|
||
| 1290 | */
|
||
| 1291 | function hook_field_attach_form($entity_type, $entity, &$form, &$form_state, $langcode) { |
||
| 1292 | // Add a checkbox allowing a given field to be emptied.
|
||
| 1293 | // See hook_field_attach_submit() for the corresponding processing code.
|
||
| 1294 | $form['empty_field_foo'] = array( |
||
| 1295 | '#type' => 'checkbox', |
||
| 1296 | '#title' => t("Empty the 'field_foo' field"), |
||
| 1297 | ); |
||
| 1298 | } |
||
| 1299 | |||
| 1300 | /**
|
||
| 1301 | * Act on field_attach_load().
|
||
| 1302 | *
|
||
| 1303 | * This hook is invoked after the field module has performed the operation.
|
||
| 1304 | *
|
||
| 1305 | * Unlike other field_attach hooks, this hook accounts for 'multiple loads'.
|
||
| 1306 | * Instead of the usual $entity parameter, it accepts an array of entities,
|
||
| 1307 | * indexed by entity ID. For performance reasons, information for all available
|
||
| 1308 | * entities should be loaded in a single query where possible.
|
||
| 1309 | *
|
||
| 1310 | * The changes made to the entities' field values get cached by the field cache
|
||
| 1311 | * for subsequent loads.
|
||
| 1312 | *
|
||
| 1313 | * See field_attach_load() for details and arguments.
|
||
| 1314 | */
|
||
| 1315 | function hook_field_attach_load($entity_type, $entities, $age, $options) { |
||
| 1316 | // @todo Needs function body.
|
||
| 1317 | } |
||
| 1318 | |||
| 1319 | /**
|
||
| 1320 | * Act on field_attach_validate().
|
||
| 1321 | *
|
||
| 1322 | * This hook is invoked after the field module has performed the operation.
|
||
| 1323 | *
|
||
| 1324 | * See field_attach_validate() for details and arguments.
|
||
| 1325 | 4444412d | Julien Enselme | *
|
| 1326 | * @param $entity_type
|
||
| 1327 | * The type of $entity; e.g., 'node' or 'user'.
|
||
| 1328 | * @param $entity
|
||
| 1329 | * The entity with fields to validate.
|
||
| 1330 | * @param array $errors
|
||
| 1331 | b4adf10d | Assos Assos | * The array of errors (keyed by field name, language code, and delta) that
|
| 1332 | * have already been reported for the entity. The function should add its
|
||
| 1333 | * errors to this array. Each error is an associative array with the following
|
||
| 1334 | * keys and values:
|
||
| 1335 | * - error: An error code (should be a string prefixed with the module name).
|
||
| 1336 | * - message: The human readable message to be displayed.
|
||
| 1337 | 85ad3d82 | Assos Assos | */
|
| 1338 | function hook_field_attach_validate($entity_type, $entity, &$errors) { |
||
| 1339 | b4adf10d | Assos Assos | // Make sure any images in article nodes have an alt text.
|
| 1340 | if ($entity_type == 'node' && $entity->type == 'article' && !empty($entity->field_image)) { |
||
| 1341 | foreach ($entity->field_image as $langcode => $items) { |
||
| 1342 | foreach ($items as $delta => $item) { |
||
| 1343 | if (!empty($item['fid']) && empty($item['alt'])) { |
||
| 1344 | $errors['field_image'][$langcode][$delta][] = array( |
||
| 1345 | 'error' => 'field_example_invalid', |
||
| 1346 | 'message' => t('All images in articles need to have an alternative text set.'), |
||
| 1347 | ); |
||
| 1348 | } |
||
| 1349 | } |
||
| 1350 | } |
||
| 1351 | } |
||
| 1352 | 85ad3d82 | Assos Assos | } |
| 1353 | |||
| 1354 | /**
|
||
| 1355 | * Act on field_attach_submit().
|
||
| 1356 | *
|
||
| 1357 | * This hook is invoked after the field module has performed the operation.
|
||
| 1358 | *
|
||
| 1359 | * @param $entity_type
|
||
| 1360 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 1361 | * @param $entity
|
||
| 1362 | * The entity for which an edit form is being submitted. The incoming form
|
||
| 1363 | * values have been extracted as field values of the $entity object.
|
||
| 1364 | * @param $form
|
||
| 1365 | * The form structure where field elements are attached to. This might be a
|
||
| 1366 | * full form structure, or a sub-part of a larger form. The $form['#parents']
|
||
| 1367 | * property can be used to identify the corresponding part of
|
||
| 1368 | * $form_state['values'].
|
||
| 1369 | * @param $form_state
|
||
| 1370 | * An associative array containing the current state of the form.
|
||
| 1371 | */
|
||
| 1372 | function hook_field_attach_submit($entity_type, $entity, $form, &$form_state) { |
||
| 1373 | // Sample case of an 'Empty the field' checkbox added on the form, allowing
|
||
| 1374 | // a given field to be emptied.
|
||
| 1375 | $values = drupal_array_get_nested_value($form_state['values'], $form['#parents']); |
||
| 1376 | if (!empty($values['empty_field_foo'])) { |
||
| 1377 | unset($entity->field_foo); |
||
| 1378 | } |
||
| 1379 | } |
||
| 1380 | |||
| 1381 | /**
|
||
| 1382 | * Act on field_attach_presave().
|
||
| 1383 | *
|
||
| 1384 | * This hook is invoked after the field module has performed the operation.
|
||
| 1385 | *
|
||
| 1386 | * See field_attach_presave() for details and arguments.
|
||
| 1387 | */
|
||
| 1388 | function hook_field_attach_presave($entity_type, $entity) { |
||
| 1389 | // @todo Needs function body.
|
||
| 1390 | } |
||
| 1391 | |||
| 1392 | /**
|
||
| 1393 | * Act on field_attach_insert().
|
||
| 1394 | *
|
||
| 1395 | * This hook is invoked after the field module has performed the operation.
|
||
| 1396 | *
|
||
| 1397 | * See field_attach_insert() for details and arguments.
|
||
| 1398 | */
|
||
| 1399 | function hook_field_attach_insert($entity_type, $entity) { |
||
| 1400 | // @todo Needs function body.
|
||
| 1401 | } |
||
| 1402 | |||
| 1403 | /**
|
||
| 1404 | * Act on field_attach_update().
|
||
| 1405 | *
|
||
| 1406 | * This hook is invoked after the field module has performed the operation.
|
||
| 1407 | *
|
||
| 1408 | * See field_attach_update() for details and arguments.
|
||
| 1409 | */
|
||
| 1410 | function hook_field_attach_update($entity_type, $entity) { |
||
| 1411 | // @todo Needs function body.
|
||
| 1412 | } |
||
| 1413 | |||
| 1414 | /**
|
||
| 1415 | * Alter field_attach_preprocess() variables.
|
||
| 1416 | *
|
||
| 1417 | * This hook is invoked while preprocessing the field.tpl.php template file
|
||
| 1418 | * in field_attach_preprocess().
|
||
| 1419 | *
|
||
| 1420 | * @param $variables
|
||
| 1421 | * The variables array is passed by reference and will be populated with field
|
||
| 1422 | * values.
|
||
| 1423 | * @param $context
|
||
| 1424 | * An associative array containing:
|
||
| 1425 | * - entity_type: The type of $entity; for example, 'node' or 'user'.
|
||
| 1426 | * - entity: The entity with fields to render.
|
||
| 1427 | * - element: The structured array containing the values ready for rendering.
|
||
| 1428 | */
|
||
| 1429 | function hook_field_attach_preprocess_alter(&$variables, $context) { |
||
| 1430 | // @todo Needs function body.
|
||
| 1431 | } |
||
| 1432 | |||
| 1433 | /**
|
||
| 1434 | * Act on field_attach_delete().
|
||
| 1435 | *
|
||
| 1436 | * This hook is invoked after the field module has performed the operation.
|
||
| 1437 | *
|
||
| 1438 | * See field_attach_delete() for details and arguments.
|
||
| 1439 | */
|
||
| 1440 | function hook_field_attach_delete($entity_type, $entity) { |
||
| 1441 | // @todo Needs function body.
|
||
| 1442 | } |
||
| 1443 | |||
| 1444 | /**
|
||
| 1445 | * Act on field_attach_delete_revision().
|
||
| 1446 | *
|
||
| 1447 | * This hook is invoked after the field module has performed the operation.
|
||
| 1448 | *
|
||
| 1449 | * See field_attach_delete_revision() for details and arguments.
|
||
| 1450 | */
|
||
| 1451 | function hook_field_attach_delete_revision($entity_type, $entity) { |
||
| 1452 | // @todo Needs function body.
|
||
| 1453 | } |
||
| 1454 | |||
| 1455 | /**
|
||
| 1456 | * Act on field_purge_data().
|
||
| 1457 | *
|
||
| 1458 | * This hook is invoked in field_purge_data() and allows modules to act on
|
||
| 1459 | * purging data from a single field pseudo-entity. For example, if a module
|
||
| 1460 | * relates data in the field with its own data, it may purge its own data
|
||
| 1461 | * during this process as well.
|
||
| 1462 | *
|
||
| 1463 | * @param $entity_type
|
||
| 1464 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 1465 | * @param $entity
|
||
| 1466 | * The pseudo-entity whose field data is being purged.
|
||
| 1467 | * @param $field
|
||
| 1468 | * The (possibly deleted) field whose data is being purged.
|
||
| 1469 | * @param $instance
|
||
| 1470 | * The deleted field instance whose data is being purged.
|
||
| 1471 | *
|
||
| 1472 | * @see @link field_purge Field API bulk data deletion @endlink
|
||
| 1473 | * @see field_purge_data()
|
||
| 1474 | */
|
||
| 1475 | function hook_field_attach_purge($entity_type, $entity, $field, $instance) { |
||
| 1476 | // find the corresponding data in mymodule and purge it
|
||
| 1477 | if ($entity_type == 'node' && $field->field_name == 'my_field_name') { |
||
| 1478 | mymodule_remove_mydata($entity->nid);
|
||
| 1479 | } |
||
| 1480 | } |
||
| 1481 | |||
| 1482 | /**
|
||
| 1483 | * Perform alterations on field_attach_view() or field_view_field().
|
||
| 1484 | *
|
||
| 1485 | * This hook is invoked after the field module has performed the operation.
|
||
| 1486 | *
|
||
| 1487 | * @param $output
|
||
| 1488 | * The structured content array tree for all of the entity's fields.
|
||
| 1489 | * @param $context
|
||
| 1490 | * An associative array containing:
|
||
| 1491 | * - entity_type: The type of $entity; for example, 'node' or 'user'.
|
||
| 1492 | * - entity: The entity with fields to render.
|
||
| 1493 | * - view_mode: View mode; for example, 'full' or 'teaser'.
|
||
| 1494 | * - display: Either a view mode string or an array of display settings. If
|
||
| 1495 | * this hook is being invoked from field_attach_view(), the 'display'
|
||
| 1496 | * element is set to the view mode string. If this hook is being invoked
|
||
| 1497 | * from field_view_field(), this element is set to the $display argument
|
||
| 1498 | * and the view_mode element is set to '_custom'. See field_view_field()
|
||
| 1499 | * for more information on what its $display argument contains.
|
||
| 1500 | * - language: The language code used for rendering.
|
||
| 1501 | */
|
||
| 1502 | function hook_field_attach_view_alter(&$output, $context) { |
||
| 1503 | // Append RDF term mappings on displayed taxonomy links.
|
||
| 1504 | foreach (element_children($output) as $field_name) { |
||
| 1505 | $element = &$output[$field_name]; |
||
| 1506 | if ($element['#field_type'] == 'taxonomy_term_reference' && $element['#formatter'] == 'taxonomy_term_reference_link') { |
||
| 1507 | foreach ($element['#items'] as $delta => $item) { |
||
| 1508 | $term = $item['taxonomy_term']; |
||
| 1509 | if (!empty($term->rdf_mapping['rdftype'])) { |
||
| 1510 | $element[$delta]['#options']['attributes']['typeof'] = $term->rdf_mapping['rdftype']; |
||
| 1511 | } |
||
| 1512 | if (!empty($term->rdf_mapping['name']['predicates'])) { |
||
| 1513 | $element[$delta]['#options']['attributes']['property'] = $term->rdf_mapping['name']['predicates']; |
||
| 1514 | } |
||
| 1515 | } |
||
| 1516 | } |
||
| 1517 | } |
||
| 1518 | } |
||
| 1519 | |||
| 1520 | /**
|
||
| 1521 | * Perform alterations on field_attach_prepare_translation().
|
||
| 1522 | *
|
||
| 1523 | * This hook is invoked after the field module has performed the operation.
|
||
| 1524 | *
|
||
| 1525 | * @param $entity
|
||
| 1526 | * The entity being prepared for translation.
|
||
| 1527 | * @param $context
|
||
| 1528 | * An associative array containing:
|
||
| 1529 | * - entity_type: The type of $entity; e.g. 'node' or 'user'.
|
||
| 1530 | * - langcode: The language the entity has to be translated in.
|
||
| 1531 | * - source_entity: The entity holding the field values to be translated.
|
||
| 1532 | * - source_langcode: The source language from which translate.
|
||
| 1533 | */
|
||
| 1534 | function hook_field_attach_prepare_translation_alter(&$entity, $context) { |
||
| 1535 | if ($context['entity_type'] == 'custom_entity_type') { |
||
| 1536 | $entity->custom_field = $context['source_entity']->custom_field; |
||
| 1537 | } |
||
| 1538 | } |
||
| 1539 | |||
| 1540 | /**
|
||
| 1541 | * Perform alterations on field_language() values.
|
||
| 1542 | *
|
||
| 1543 | * This hook is invoked to alter the array of display languages for the given
|
||
| 1544 | * entity.
|
||
| 1545 | *
|
||
| 1546 | * @param $display_language
|
||
| 1547 | * A reference to an array of language codes keyed by field name.
|
||
| 1548 | * @param $context
|
||
| 1549 | * An associative array containing:
|
||
| 1550 | * - entity_type: The type of the entity to be displayed.
|
||
| 1551 | * - entity: The entity with fields to render.
|
||
| 1552 | * - langcode: The language code $entity has to be displayed in.
|
||
| 1553 | 4444412d | Julien Enselme | *
|
| 1554 | * @ingroup field_language
|
||
| 1555 | 85ad3d82 | Assos Assos | */
|
| 1556 | function hook_field_language_alter(&$display_language, $context) { |
||
| 1557 | // Do not apply core language fallback rules if they are disabled or if Locale
|
||
| 1558 | // is not registered as a translation handler.
|
||
| 1559 | if (variable_get('locale_field_language_fallback', TRUE) && field_has_translation_handler($context['entity_type'], 'locale')) { |
||
| 1560 | locale_field_language_fallback($display_language, $context['entity'], $context['language']); |
||
| 1561 | } |
||
| 1562 | } |
||
| 1563 | |||
| 1564 | /**
|
||
| 1565 | * Alter field_available_languages() values.
|
||
| 1566 | *
|
||
| 1567 | * This hook is invoked from field_available_languages() to allow modules to
|
||
| 1568 | * alter the array of available languages for the given field.
|
||
| 1569 | *
|
||
| 1570 | * @param $languages
|
||
| 1571 | * A reference to an array of language codes to be made available.
|
||
| 1572 | * @param $context
|
||
| 1573 | * An associative array containing:
|
||
| 1574 | * - entity_type: The type of the entity the field is attached to.
|
||
| 1575 | * - field: A field data structure.
|
||
| 1576 | 4444412d | Julien Enselme | *
|
| 1577 | * @ingroup field_language
|
||
| 1578 | 85ad3d82 | Assos Assos | */
|
| 1579 | function hook_field_available_languages_alter(&$languages, $context) { |
||
| 1580 | // Add an unavailable language.
|
||
| 1581 | $languages[] = 'xx'; |
||
| 1582 | |||
| 1583 | // Remove an available language.
|
||
| 1584 | $index = array_search('yy', $languages); |
||
| 1585 | unset($languages[$index]); |
||
| 1586 | } |
||
| 1587 | |||
| 1588 | /**
|
||
| 1589 | * Act on field_attach_create_bundle().
|
||
| 1590 | *
|
||
| 1591 | * This hook is invoked after the field module has performed the operation.
|
||
| 1592 | *
|
||
| 1593 | * See field_attach_create_bundle() for details and arguments.
|
||
| 1594 | */
|
||
| 1595 | function hook_field_attach_create_bundle($entity_type, $bundle) { |
||
| 1596 | // When a new bundle is created, the menu needs to be rebuilt to add the
|
||
| 1597 | // Field UI menu item tabs.
|
||
| 1598 | variable_set('menu_rebuild_needed', TRUE); |
||
| 1599 | } |
||
| 1600 | |||
| 1601 | /**
|
||
| 1602 | * Act on field_attach_rename_bundle().
|
||
| 1603 | *
|
||
| 1604 | * This hook is invoked after the field module has performed the operation.
|
||
| 1605 | *
|
||
| 1606 | * See field_attach_rename_bundle() for details and arguments.
|
||
| 1607 | */
|
||
| 1608 | function hook_field_attach_rename_bundle($entity_type, $bundle_old, $bundle_new) { |
||
| 1609 | // Update the extra weights variable with new information.
|
||
| 1610 | if ($bundle_old !== $bundle_new) { |
||
| 1611 | $extra_weights = variable_get('field_extra_weights', array()); |
||
| 1612 | if (isset($info[$entity_type][$bundle_old])) { |
||
| 1613 | $extra_weights[$entity_type][$bundle_new] = $extra_weights[$entity_type][$bundle_old]; |
||
| 1614 | unset($extra_weights[$entity_type][$bundle_old]); |
||
| 1615 | variable_set('field_extra_weights', $extra_weights); |
||
| 1616 | } |
||
| 1617 | } |
||
| 1618 | } |
||
| 1619 | |||
| 1620 | /**
|
||
| 1621 | * Act on field_attach_delete_bundle.
|
||
| 1622 | *
|
||
| 1623 | * This hook is invoked after the field module has performed the operation.
|
||
| 1624 | *
|
||
| 1625 | * @param $entity_type
|
||
| 1626 | * The type of entity; for example, 'node' or 'user'.
|
||
| 1627 | * @param $bundle
|
||
| 1628 | 4444412d | Julien Enselme | * The name of the bundle that was just deleted.
|
| 1629 | 85ad3d82 | Assos Assos | * @param $instances
|
| 1630 | * An array of all instances that existed for the bundle before it was
|
||
| 1631 | * deleted.
|
||
| 1632 | */
|
||
| 1633 | function hook_field_attach_delete_bundle($entity_type, $bundle, $instances) { |
||
| 1634 | // Remove the extra weights variable information for this bundle.
|
||
| 1635 | $extra_weights = variable_get('field_extra_weights', array()); |
||
| 1636 | if (isset($extra_weights[$entity_type][$bundle])) { |
||
| 1637 | unset($extra_weights[$entity_type][$bundle]); |
||
| 1638 | variable_set('field_extra_weights', $extra_weights); |
||
| 1639 | } |
||
| 1640 | } |
||
| 1641 | |||
| 1642 | /**
|
||
| 1643 | 4444412d | Julien Enselme | * @} End of "addtogroup field_attach".
|
| 1644 | 85ad3d82 | Assos Assos | */
|
| 1645 | |||
| 1646 | /**
|
||
| 1647 | * @addtogroup field_storage
|
||
| 1648 | * @{
|
||
| 1649 | */
|
||
| 1650 | |||
| 1651 | /**
|
||
| 1652 | * Expose Field API storage backends.
|
||
| 1653 | *
|
||
| 1654 | * @return
|
||
| 1655 | * An array describing the storage backends implemented by the module.
|
||
| 1656 | * The keys are storage backend names. To avoid name clashes, storage backend
|
||
| 1657 | * names should be prefixed with the name of the module that exposes them.
|
||
| 1658 | * The values are arrays describing the storage backend, with the following
|
||
| 1659 | * key/value pairs:
|
||
| 1660 | * - label: The human-readable name of the storage backend.
|
||
| 1661 | * - description: A short description for the storage backend.
|
||
| 1662 | * - settings: An array whose keys are the names of the settings available
|
||
| 1663 | * for the storage backend, and whose values are the default values for
|
||
| 1664 | * those settings.
|
||
| 1665 | */
|
||
| 1666 | function hook_field_storage_info() { |
||
| 1667 | return array( |
||
| 1668 | 'field_sql_storage' => array( |
||
| 1669 | 'label' => t('Default SQL storage'), |
||
| 1670 | 'description' => t('Stores fields in the local SQL database, using per-field tables.'), |
||
| 1671 | 'settings' => array(), |
||
| 1672 | ), |
||
| 1673 | ); |
||
| 1674 | } |
||
| 1675 | |||
| 1676 | /**
|
||
| 1677 | * Perform alterations on Field API storage types.
|
||
| 1678 | *
|
||
| 1679 | * @param $info
|
||
| 1680 | * Array of informations on storage types exposed by
|
||
| 1681 | * hook_field_field_storage_info() implementations.
|
||
| 1682 | */
|
||
| 1683 | function hook_field_storage_info_alter(&$info) { |
||
| 1684 | // Add a setting to a storage type.
|
||
| 1685 | $info['field_sql_storage']['settings'] += array( |
||
| 1686 | 'mymodule_additional_setting' => 'default value', |
||
| 1687 | ); |
||
| 1688 | } |
||
| 1689 | |||
| 1690 | /**
|
||
| 1691 | * Reveal the internal details about the storage for a field.
|
||
| 1692 | *
|
||
| 1693 | * For example, an SQL storage module might return the Schema API structure for
|
||
| 1694 | * the table. A key/value storage module might return the server name,
|
||
| 1695 | * authentication credentials, and bin name.
|
||
| 1696 | *
|
||
| 1697 | * Field storage modules are not obligated to implement this hook. Modules
|
||
| 1698 | * that rely on these details must only use them for read operations.
|
||
| 1699 | *
|
||
| 1700 | * @param $field
|
||
| 1701 | * A field structure.
|
||
| 1702 | *
|
||
| 1703 | * @return
|
||
| 1704 | * An array of details.
|
||
| 1705 | * - The first dimension is a store type (sql, solr, etc).
|
||
| 1706 | * - The second dimension indicates the age of the values in the store
|
||
| 1707 | * FIELD_LOAD_CURRENT or FIELD_LOAD_REVISION.
|
||
| 1708 | * - Other dimensions are specific to the field storage module.
|
||
| 1709 | *
|
||
| 1710 | * @see hook_field_storage_details_alter()
|
||
| 1711 | */
|
||
| 1712 | function hook_field_storage_details($field) { |
||
| 1713 | $details = array(); |
||
| 1714 | |||
| 1715 | // Add field columns.
|
||
| 1716 | foreach ((array) $field['columns'] as $column_name => $attributes) { |
||
| 1717 | $real_name = _field_sql_storage_columnname($field['field_name'], $column_name); |
||
| 1718 | $columns[$column_name] = $real_name; |
||
| 1719 | } |
||
| 1720 | return array( |
||
| 1721 | 'sql' => array( |
||
| 1722 | FIELD_LOAD_CURRENT => array( |
||
| 1723 | _field_sql_storage_tablename($field) => $columns, |
||
| 1724 | ), |
||
| 1725 | FIELD_LOAD_REVISION => array( |
||
| 1726 | _field_sql_storage_revision_tablename($field) => $columns, |
||
| 1727 | ), |
||
| 1728 | ), |
||
| 1729 | ); |
||
| 1730 | } |
||
| 1731 | |||
| 1732 | /**
|
||
| 1733 | * Perform alterations on Field API storage details.
|
||
| 1734 | *
|
||
| 1735 | * @param $details
|
||
| 1736 | * An array of storage details for fields as exposed by
|
||
| 1737 | * hook_field_storage_details() implementations.
|
||
| 1738 | * @param $field
|
||
| 1739 | * A field structure.
|
||
| 1740 | *
|
||
| 1741 | * @see hook_field_storage_details()
|
||
| 1742 | */
|
||
| 1743 | function hook_field_storage_details_alter(&$details, $field) { |
||
| 1744 | if ($field['field_name'] == 'field_of_interest') { |
||
| 1745 | $columns = array(); |
||
| 1746 | foreach ((array) $field['columns'] as $column_name => $attributes) { |
||
| 1747 | $columns[$column_name] = $column_name; |
||
| 1748 | } |
||
| 1749 | $details['drupal_variables'] = array( |
||
| 1750 | FIELD_LOAD_CURRENT => array( |
||
| 1751 | 'moon' => $columns, |
||
| 1752 | ), |
||
| 1753 | FIELD_LOAD_REVISION => array( |
||
| 1754 | 'mars' => $columns, |
||
| 1755 | ), |
||
| 1756 | ); |
||
| 1757 | } |
||
| 1758 | } |
||
| 1759 | |||
| 1760 | /**
|
||
| 1761 | * Load field data for a set of entities.
|
||
| 1762 | *
|
||
| 1763 | * This hook is invoked from field_attach_load() to ask the field storage
|
||
| 1764 | * module to load field data.
|
||
| 1765 | *
|
||
| 1766 | * Modules implementing this hook should load field values and add them to
|
||
| 1767 | * objects in $entities. Fields with no values should be added as empty
|
||
| 1768 | * arrays.
|
||
| 1769 | *
|
||
| 1770 | * @param $entity_type
|
||
| 1771 | * The type of entity, such as 'node' or 'user'.
|
||
| 1772 | * @param $entities
|
||
| 1773 | * The array of entity objects to add fields to, keyed by entity ID.
|
||
| 1774 | * @param $age
|
||
| 1775 | * FIELD_LOAD_CURRENT to load the most recent revision for all fields, or
|
||
| 1776 | * FIELD_LOAD_REVISION to load the version indicated by each entity.
|
||
| 1777 | * @param $fields
|
||
| 1778 | * An array listing the fields to be loaded. The keys of the array are field
|
||
| 1779 | * IDs, and the values of the array are the entity IDs (or revision IDs,
|
||
| 1780 | * depending on the $age parameter) to add each field to.
|
||
| 1781 | * @param $options
|
||
| 1782 | * An associative array of additional options, with the following keys:
|
||
| 1783 | * - deleted: If TRUE, deleted fields should be loaded as well as
|
||
| 1784 | * non-deleted fields. If unset or FALSE, only non-deleted fields should be
|
||
| 1785 | * loaded.
|
||
| 1786 | */
|
||
| 1787 | function hook_field_storage_load($entity_type, $entities, $age, $fields, $options) { |
||
| 1788 | $load_current = $age == FIELD_LOAD_CURRENT; |
||
| 1789 | |||
| 1790 | foreach ($fields as $field_id => $ids) { |
||
| 1791 | // By the time this hook runs, the relevant field definitions have been
|
||
| 1792 | // populated and cached in FieldInfo, so calling field_info_field_by_id()
|
||
| 1793 | // on each field individually is more efficient than loading all fields in
|
||
| 1794 | // memory upfront with field_info_field_by_ids().
|
||
| 1795 | $field = field_info_field_by_id($field_id); |
||
| 1796 | $field_name = $field['field_name']; |
||
| 1797 | $table = $load_current ? _field_sql_storage_tablename($field) : _field_sql_storage_revision_tablename($field); |
||
| 1798 | |||
| 1799 | $query = db_select($table, 't') |
||
| 1800 | ->fields('t')
|
||
| 1801 | ->condition('entity_type', $entity_type) |
||
| 1802 | ->condition($load_current ? 'entity_id' : 'revision_id', $ids, 'IN') |
||
| 1803 | ->condition('language', field_available_languages($entity_type, $field), 'IN') |
||
| 1804 | ->orderBy('delta');
|
||
| 1805 | |||
| 1806 | if (empty($options['deleted'])) { |
||
| 1807 | $query->condition('deleted', 0); |
||
| 1808 | } |
||
| 1809 | |||
| 1810 | $results = $query->execute(); |
||
| 1811 | |||
| 1812 | $delta_count = array(); |
||
| 1813 | foreach ($results as $row) { |
||
| 1814 | if (!isset($delta_count[$row->entity_id][$row->language])) { |
||
| 1815 | $delta_count[$row->entity_id][$row->language] = 0; |
||
| 1816 | } |
||
| 1817 | |||
| 1818 | if ($field['cardinality'] == FIELD_CARDINALITY_UNLIMITED || $delta_count[$row->entity_id][$row->language] < $field['cardinality']) { |
||
| 1819 | $item = array(); |
||
| 1820 | // For each column declared by the field, populate the item
|
||
| 1821 | // from the prefixed database column.
|
||
| 1822 | foreach ($field['columns'] as $column => $attributes) { |
||
| 1823 | $column_name = _field_sql_storage_columnname($field_name, $column); |
||
| 1824 | $item[$column] = $row->$column_name; |
||
| 1825 | } |
||
| 1826 | |||
| 1827 | // Add the item to the field values for the entity.
|
||
| 1828 | $entities[$row->entity_id]->{$field_name}[$row->language][] = $item; |
||
| 1829 | $delta_count[$row->entity_id][$row->language]++; |
||
| 1830 | } |
||
| 1831 | } |
||
| 1832 | } |
||
| 1833 | } |
||
| 1834 | |||
| 1835 | /**
|
||
| 1836 | * Write field data for an entity.
|
||
| 1837 | *
|
||
| 1838 | * This hook is invoked from field_attach_insert() and field_attach_update(),
|
||
| 1839 | * to ask the field storage module to save field data.
|
||
| 1840 | *
|
||
| 1841 | * @param $entity_type
|
||
| 1842 | * The entity type of entity, such as 'node' or 'user'.
|
||
| 1843 | * @param $entity
|
||
| 1844 | * The entity on which to operate.
|
||
| 1845 | * @param $op
|
||
| 1846 | * FIELD_STORAGE_UPDATE when updating an existing entity,
|
||
| 1847 | * FIELD_STORAGE_INSERT when inserting a new entity.
|
||
| 1848 | * @param $fields
|
||
| 1849 | * An array listing the fields to be written. The keys and values of the
|
||
| 1850 | * array are field IDs.
|
||
| 1851 | */
|
||
| 1852 | function hook_field_storage_write($entity_type, $entity, $op, $fields) { |
||
| 1853 | list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity); |
||
| 1854 | if (!isset($vid)) { |
||
| 1855 | $vid = $id; |
||
| 1856 | } |
||
| 1857 | |||
| 1858 | foreach ($fields as $field_id) { |
||
| 1859 | $field = field_info_field_by_id($field_id); |
||
| 1860 | $field_name = $field['field_name']; |
||
| 1861 | $table_name = _field_sql_storage_tablename($field); |
||
| 1862 | $revision_name = _field_sql_storage_revision_tablename($field); |
||
| 1863 | |||
| 1864 | $all_languages = field_available_languages($entity_type, $field); |
||
| 1865 | $field_languages = array_intersect($all_languages, array_keys((array) $entity->$field_name)); |
||
| 1866 | |||
| 1867 | // Delete and insert, rather than update, in case a value was added.
|
||
| 1868 | if ($op == FIELD_STORAGE_UPDATE) { |
||
| 1869 | // Delete languages present in the incoming $entity->$field_name.
|
||
| 1870 | // Delete all languages if $entity->$field_name is empty.
|
||
| 1871 | $languages = !empty($entity->$field_name) ? $field_languages : $all_languages; |
||
| 1872 | if ($languages) { |
||
| 1873 | db_delete($table_name)
|
||
| 1874 | ->condition('entity_type', $entity_type) |
||
| 1875 | ->condition('entity_id', $id) |
||
| 1876 | ->condition('language', $languages, 'IN') |
||
| 1877 | ->execute(); |
||
| 1878 | db_delete($revision_name)
|
||
| 1879 | ->condition('entity_type', $entity_type) |
||
| 1880 | ->condition('entity_id', $id) |
||
| 1881 | ->condition('revision_id', $vid) |
||
| 1882 | ->condition('language', $languages, 'IN') |
||
| 1883 | ->execute(); |
||
| 1884 | } |
||
| 1885 | } |
||
| 1886 | |||
| 1887 | // Prepare the multi-insert query.
|
||
| 1888 | $do_insert = FALSE; |
||
| 1889 | $columns = array('entity_type', 'entity_id', 'revision_id', 'bundle', 'delta', 'language'); |
||
| 1890 | foreach ($field['columns'] as $column => $attributes) { |
||
| 1891 | $columns[] = _field_sql_storage_columnname($field_name, $column); |
||
| 1892 | } |
||
| 1893 | $query = db_insert($table_name)->fields($columns); |
||
| 1894 | $revision_query = db_insert($revision_name)->fields($columns); |
||
| 1895 | |||
| 1896 | foreach ($field_languages as $langcode) { |
||
| 1897 | $items = (array) $entity->{$field_name}[$langcode]; |
||
| 1898 | $delta_count = 0; |
||
| 1899 | foreach ($items as $delta => $item) { |
||
| 1900 | 6ff32cea | Florent Torregrosa | // We now know we have something to insert.
|
| 1901 | 85ad3d82 | Assos Assos | $do_insert = TRUE; |
| 1902 | $record = array( |
||
| 1903 | 'entity_type' => $entity_type, |
||
| 1904 | 'entity_id' => $id, |
||
| 1905 | 'revision_id' => $vid, |
||
| 1906 | 'bundle' => $bundle, |
||
| 1907 | 'delta' => $delta, |
||
| 1908 | 'language' => $langcode, |
||
| 1909 | ); |
||
| 1910 | foreach ($field['columns'] as $column => $attributes) { |
||
| 1911 | $record[_field_sql_storage_columnname($field_name, $column)] = isset($item[$column]) ? $item[$column] : NULL; |
||
| 1912 | } |
||
| 1913 | $query->values($record); |
||
| 1914 | if (isset($vid)) { |
||
| 1915 | $revision_query->values($record); |
||
| 1916 | } |
||
| 1917 | |||
| 1918 | if ($field['cardinality'] != FIELD_CARDINALITY_UNLIMITED && ++$delta_count == $field['cardinality']) { |
||
| 1919 | break;
|
||
| 1920 | } |
||
| 1921 | } |
||
| 1922 | } |
||
| 1923 | |||
| 1924 | // Execute the query if we have values to insert.
|
||
| 1925 | if ($do_insert) { |
||
| 1926 | $query->execute();
|
||
| 1927 | $revision_query->execute();
|
||
| 1928 | } |
||
| 1929 | } |
||
| 1930 | } |
||
| 1931 | |||
| 1932 | /**
|
||
| 1933 | * Delete all field data for an entity.
|
||
| 1934 | *
|
||
| 1935 | * This hook is invoked from field_attach_delete() to ask the field storage
|
||
| 1936 | * module to delete field data.
|
||
| 1937 | *
|
||
| 1938 | * @param $entity_type
|
||
| 1939 | * The entity type of entity, such as 'node' or 'user'.
|
||
| 1940 | * @param $entity
|
||
| 1941 | * The entity on which to operate.
|
||
| 1942 | * @param $fields
|
||
| 1943 | * An array listing the fields to delete. The keys and values of the
|
||
| 1944 | * array are field IDs.
|
||
| 1945 | */
|
||
| 1946 | function hook_field_storage_delete($entity_type, $entity, $fields) { |
||
| 1947 | list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity); |
||
| 1948 | |||
| 1949 | foreach (field_info_instances($entity_type, $bundle) as $instance) { |
||
| 1950 | if (isset($fields[$instance['field_id']])) { |
||
| 1951 | $field = field_info_field_by_id($instance['field_id']); |
||
| 1952 | field_sql_storage_field_storage_purge($entity_type, $entity, $field, $instance); |
||
| 1953 | } |
||
| 1954 | } |
||
| 1955 | } |
||
| 1956 | |||
| 1957 | /**
|
||
| 1958 | * Delete a single revision of field data for an entity.
|
||
| 1959 | *
|
||
| 1960 | * This hook is invoked from field_attach_delete_revision() to ask the field
|
||
| 1961 | * storage module to delete field revision data.
|
||
| 1962 | *
|
||
| 1963 | * Deleting the current (most recently written) revision is not
|
||
| 1964 | * allowed as has undefined results.
|
||
| 1965 | *
|
||
| 1966 | * @param $entity_type
|
||
| 1967 | * The entity type of entity, such as 'node' or 'user'.
|
||
| 1968 | * @param $entity
|
||
| 1969 | * The entity on which to operate. The revision to delete is
|
||
| 1970 | * indicated by the entity's revision ID property, as identified by
|
||
| 1971 | * hook_fieldable_info() for $entity_type.
|
||
| 1972 | * @param $fields
|
||
| 1973 | * An array listing the fields to delete. The keys and values of the
|
||
| 1974 | * array are field IDs.
|
||
| 1975 | */
|
||
| 1976 | function hook_field_storage_delete_revision($entity_type, $entity, $fields) { |
||
| 1977 | list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity); |
||
| 1978 | |||
| 1979 | if (isset($vid)) { |
||
| 1980 | foreach ($fields as $field_id) { |
||
| 1981 | $field = field_info_field_by_id($field_id); |
||
| 1982 | $revision_name = _field_sql_storage_revision_tablename($field); |
||
| 1983 | db_delete($revision_name)
|
||
| 1984 | ->condition('entity_type', $entity_type) |
||
| 1985 | ->condition('entity_id', $id) |
||
| 1986 | ->condition('revision_id', $vid) |
||
| 1987 | ->execute(); |
||
| 1988 | } |
||
| 1989 | } |
||
| 1990 | } |
||
| 1991 | |||
| 1992 | /**
|
||
| 1993 | * Execute an EntityFieldQuery.
|
||
| 1994 | *
|
||
| 1995 | * This hook is called to find the entities having certain entity and field
|
||
| 1996 | * conditions and sort them in the given field order. If the field storage
|
||
| 1997 | * engine also handles property sorts and orders, it should unset those
|
||
| 1998 | * properties in the called object to signal that those have been handled.
|
||
| 1999 | *
|
||
| 2000 | * @param EntityFieldQuery $query
|
||
| 2001 | * An EntityFieldQuery.
|
||
| 2002 | *
|
||
| 2003 | * @return
|
||
| 2004 | * See EntityFieldQuery::execute() for the return values.
|
||
| 2005 | */
|
||
| 2006 | function hook_field_storage_query($query) { |
||
| 2007 | $groups = array(); |
||
| 2008 | if ($query->age == FIELD_LOAD_CURRENT) { |
||
| 2009 | $tablename_function = '_field_sql_storage_tablename'; |
||
| 2010 | $id_key = 'entity_id'; |
||
| 2011 | } |
||
| 2012 | else {
|
||
| 2013 | $tablename_function = '_field_sql_storage_revision_tablename'; |
||
| 2014 | $id_key = 'revision_id'; |
||
| 2015 | } |
||
| 2016 | $table_aliases = array(); |
||
| 2017 | // Add tables for the fields used.
|
||
| 2018 | foreach ($query->fields as $key => $field) { |
||
| 2019 | $tablename = $tablename_function($field); |
||
| 2020 | // Every field needs a new table.
|
||
| 2021 | $table_alias = $tablename . $key; |
||
| 2022 | $table_aliases[$key] = $table_alias; |
||
| 2023 | if ($key) { |
||
| 2024 | $select_query->join($tablename, $table_alias, "$table_alias.entity_type = $field_base_table.entity_type AND $table_alias.$id_key = $field_base_table.$id_key"); |
||
| 2025 | } |
||
| 2026 | else {
|
||
| 2027 | $select_query = db_select($tablename, $table_alias); |
||
| 2028 | $select_query->addTag('entity_field_access'); |
||
| 2029 | $select_query->addMetaData('base_table', $tablename); |
||
| 2030 | $select_query->fields($table_alias, array('entity_type', 'entity_id', 'revision_id', 'bundle')); |
||
| 2031 | $field_base_table = $table_alias; |
||
| 2032 | } |
||
| 2033 | if ($field['cardinality'] != 1) { |
||
| 2034 | $select_query->distinct();
|
||
| 2035 | } |
||
| 2036 | } |
||
| 2037 | |||
| 2038 | // Add field conditions.
|
||
| 2039 | foreach ($query->fieldConditions as $key => $condition) { |
||
| 2040 | $table_alias = $table_aliases[$key]; |
||
| 2041 | $field = $condition['field']; |
||
| 2042 | // Add the specified condition.
|
||
| 2043 | $sql_field = "$table_alias." . _field_sql_storage_columnname($field['field_name'], $condition['column']); |
||
| 2044 | $query->addCondition($select_query, $sql_field, $condition); |
||
| 2045 | // Add delta / language group conditions.
|
||
| 2046 | foreach (array('delta', 'language') as $column) { |
||
| 2047 | if (isset($condition[$column . '_group'])) { |
||
| 2048 | $group_name = $condition[$column . '_group']; |
||
| 2049 | if (!isset($groups[$column][$group_name])) { |
||
| 2050 | $groups[$column][$group_name] = $table_alias; |
||
| 2051 | } |
||
| 2052 | else {
|
||
| 2053 | $select_query->where("$table_alias.$column = " . $groups[$column][$group_name] . ".$column"); |
||
| 2054 | } |
||
| 2055 | } |
||
| 2056 | } |
||
| 2057 | } |
||
| 2058 | |||
| 2059 | if (isset($query->deleted)) { |
||
| 2060 | $select_query->condition("$field_base_table.deleted", (int) $query->deleted); |
||
| 2061 | } |
||
| 2062 | |||
| 2063 | // Is there a need to sort the query by property?
|
||
| 2064 | $has_property_order = FALSE; |
||
| 2065 | foreach ($query->order as $order) { |
||
| 2066 | if ($order['type'] == 'property') { |
||
| 2067 | $has_property_order = TRUE; |
||
| 2068 | } |
||
| 2069 | } |
||
| 2070 | |||
| 2071 | if ($query->propertyConditions || $has_property_order) { |
||
| 2072 | if (empty($query->entityConditions['entity_type']['value'])) { |
||
| 2073 | throw new EntityFieldQueryException('Property conditions and orders must have an entity type defined.'); |
||
| 2074 | } |
||
| 2075 | $entity_type = $query->entityConditions['entity_type']['value']; |
||
| 2076 | $entity_base_table = _field_sql_storage_query_join_entity($select_query, $entity_type, $field_base_table); |
||
| 2077 | $query->entityConditions['entity_type']['operator'] = '='; |
||
| 2078 | foreach ($query->propertyConditions as $property_condition) { |
||
| 2079 | $query->addCondition($select_query, "$entity_base_table." . $property_condition['column'], $property_condition); |
||
| 2080 | } |
||
| 2081 | } |
||
| 2082 | foreach ($query->entityConditions as $key => $condition) { |
||
| 2083 | $query->addCondition($select_query, "$field_base_table.$key", $condition); |
||
| 2084 | } |
||
| 2085 | |||
| 2086 | // Order the query.
|
||
| 2087 | foreach ($query->order as $order) { |
||
| 2088 | if ($order['type'] == 'entity') { |
||
| 2089 | $key = $order['specifier']; |
||
| 2090 | $select_query->orderBy("$field_base_table.$key", $order['direction']); |
||
| 2091 | } |
||
| 2092 | elseif ($order['type'] == 'field') { |
||
| 2093 | $specifier = $order['specifier']; |
||
| 2094 | $field = $specifier['field']; |
||
| 2095 | $table_alias = $table_aliases[$specifier['index']]; |
||
| 2096 | $sql_field = "$table_alias." . _field_sql_storage_columnname($field['field_name'], $specifier['column']); |
||
| 2097 | $select_query->orderBy($sql_field, $order['direction']); |
||
| 2098 | } |
||
| 2099 | elseif ($order['type'] == 'property') { |
||
| 2100 | $select_query->orderBy("$entity_base_table." . $order['specifier'], $order['direction']); |
||
| 2101 | } |
||
| 2102 | } |
||
| 2103 | |||
| 2104 | return $query->finishQuery($select_query, $id_key); |
||
| 2105 | } |
||
| 2106 | |||
| 2107 | /**
|
||
| 2108 | * Act on creation of a new field.
|
||
| 2109 | *
|
||
| 2110 | * This hook is invoked from field_create_field() to ask the field storage
|
||
| 2111 | * module to save field information and prepare for storing field instances.
|
||
| 2112 | * If there is a problem, the field storage module should throw an exception.
|
||
| 2113 | *
|
||
| 2114 | * @param $field
|
||
| 2115 | * The field structure being created.
|
||
| 2116 | */
|
||
| 2117 | function hook_field_storage_create_field($field) { |
||
| 2118 | $schema = _field_sql_storage_schema($field); |
||
| 2119 | foreach ($schema as $name => $table) { |
||
| 2120 | db_create_table($name, $table); |
||
| 2121 | } |
||
| 2122 | drupal_get_schema(NULL, TRUE); |
||
| 2123 | } |
||
| 2124 | |||
| 2125 | /**
|
||
| 2126 | * Act on deletion of a field.
|
||
| 2127 | *
|
||
| 2128 | * This hook is invoked from field_delete_field() to ask the field storage
|
||
| 2129 | * module to mark all information stored in the field for deletion.
|
||
| 2130 | *
|
||
| 2131 | * @param $field
|
||
| 2132 | * The field being deleted.
|
||
| 2133 | */
|
||
| 2134 | function hook_field_storage_delete_field($field) { |
||
| 2135 | // Mark all data associated with the field for deletion.
|
||
| 2136 | $field['deleted'] = 0; |
||
| 2137 | $table = _field_sql_storage_tablename($field); |
||
| 2138 | $revision_table = _field_sql_storage_revision_tablename($field); |
||
| 2139 | db_update($table)
|
||
| 2140 | ->fields(array('deleted' => 1)) |
||
| 2141 | ->execute(); |
||
| 2142 | |||
| 2143 | // Move the table to a unique name while the table contents are being deleted.
|
||
| 2144 | $field['deleted'] = 1; |
||
| 2145 | $new_table = _field_sql_storage_tablename($field); |
||
| 2146 | $revision_new_table = _field_sql_storage_revision_tablename($field); |
||
| 2147 | db_rename_table($table, $new_table); |
||
| 2148 | db_rename_table($revision_table, $revision_new_table); |
||
| 2149 | drupal_get_schema(NULL, TRUE); |
||
| 2150 | } |
||
| 2151 | |||
| 2152 | /**
|
||
| 2153 | * Act on deletion of a field instance.
|
||
| 2154 | *
|
||
| 2155 | * This hook is invoked from field_delete_instance() to ask the field storage
|
||
| 2156 | * module to mark all information stored for the field instance for deletion.
|
||
| 2157 | *
|
||
| 2158 | * @param $instance
|
||
| 2159 | * The instance being deleted.
|
||
| 2160 | */
|
||
| 2161 | function hook_field_storage_delete_instance($instance) { |
||
| 2162 | $field = field_info_field($instance['field_name']); |
||
| 2163 | $table_name = _field_sql_storage_tablename($field); |
||
| 2164 | $revision_name = _field_sql_storage_revision_tablename($field); |
||
| 2165 | db_update($table_name)
|
||
| 2166 | ->fields(array('deleted' => 1)) |
||
| 2167 | ->condition('entity_type', $instance['entity_type']) |
||
| 2168 | ->condition('bundle', $instance['bundle']) |
||
| 2169 | ->execute(); |
||
| 2170 | db_update($revision_name)
|
||
| 2171 | ->fields(array('deleted' => 1)) |
||
| 2172 | ->condition('entity_type', $instance['entity_type']) |
||
| 2173 | ->condition('bundle', $instance['bundle']) |
||
| 2174 | ->execute(); |
||
| 2175 | } |
||
| 2176 | |||
| 2177 | /**
|
||
| 2178 | * Act before the storage backends load field data.
|
||
| 2179 | *
|
||
| 2180 | * This hook allows modules to load data before the Field Storage API,
|
||
| 2181 | * optionally preventing the field storage module from doing so.
|
||
| 2182 | *
|
||
| 2183 | * This lets 3rd party modules override, mirror, shard, or otherwise store a
|
||
| 2184 | * subset of fields in a different way than the current storage engine.
|
||
| 2185 | * Possible use cases include per-bundle storage, per-combo-field storage, etc.
|
||
| 2186 | *
|
||
| 2187 | * Modules implementing this hook should load field values and add them to
|
||
| 2188 | * objects in $entities. Fields with no values should be added as empty
|
||
| 2189 | * arrays. In addition, fields loaded should be added as keys to $skip_fields.
|
||
| 2190 | *
|
||
| 2191 | * @param $entity_type
|
||
| 2192 | * The type of entity, such as 'node' or 'user'.
|
||
| 2193 | * @param $entities
|
||
| 2194 | * The array of entity objects to add fields to, keyed by entity ID.
|
||
| 2195 | * @param $age
|
||
| 2196 | * FIELD_LOAD_CURRENT to load the most recent revision for all fields, or
|
||
| 2197 | * FIELD_LOAD_REVISION to load the version indicated by each entity.
|
||
| 2198 | * @param $skip_fields
|
||
| 2199 | * An array keyed by field IDs whose data has already been loaded and
|
||
| 2200 | * therefore should not be loaded again. Add a key to this array to indicate
|
||
| 2201 | * that your module has already loaded a field.
|
||
| 2202 | * @param $options
|
||
| 2203 | * An associative array of additional options, with the following keys:
|
||
| 2204 | * - field_id: The field ID that should be loaded. If unset, all fields
|
||
| 2205 | * should be loaded.
|
||
| 2206 | * - deleted: If TRUE, deleted fields should be loaded as well as
|
||
| 2207 | * non-deleted fields. If unset or FALSE, only non-deleted fields should be
|
||
| 2208 | * loaded.
|
||
| 2209 | */
|
||
| 2210 | function hook_field_storage_pre_load($entity_type, $entities, $age, &$skip_fields, $options) { |
||
| 2211 | // @todo Needs function body.
|
||
| 2212 | } |
||
| 2213 | |||
| 2214 | /**
|
||
| 2215 | * Act before the storage backends insert field data.
|
||
| 2216 | *
|
||
| 2217 | * This hook allows modules to store data before the Field Storage API,
|
||
| 2218 | * optionally preventing the field storage module from doing so.
|
||
| 2219 | *
|
||
| 2220 | * @param $entity_type
|
||
| 2221 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 2222 | * @param $entity
|
||
| 2223 | * The entity with fields to save.
|
||
| 2224 | * @param $skip_fields
|
||
| 2225 | * An array keyed by field IDs whose data has already been written and
|
||
| 2226 | * therefore should not be written again. The values associated with these
|
||
| 2227 | * keys are not specified.
|
||
| 2228 | * @return
|
||
| 2229 | * Saved field IDs are set set as keys in $skip_fields.
|
||
| 2230 | */
|
||
| 2231 | function hook_field_storage_pre_insert($entity_type, $entity, &$skip_fields) { |
||
| 2232 | if ($entity_type == 'node' && $entity->status && _forum_node_check_node_type($entity)) { |
||
| 2233 | $query = db_insert('forum_index')->fields(array('nid', 'title', 'tid', 'sticky', 'created', 'comment_count', 'last_comment_timestamp')); |
||
| 2234 | foreach ($entity->taxonomy_forums as $language) { |
||
| 2235 | foreach ($language as $delta) { |
||
| 2236 | $query->values(array( |
||
| 2237 | 'nid' => $entity->nid, |
||
| 2238 | 'title' => $entity->title, |
||
| 2239 | 'tid' => $delta['value'], |
||
| 2240 | 'sticky' => $entity->sticky, |
||
| 2241 | 'created' => $entity->created, |
||
| 2242 | 'comment_count' => 0, |
||
| 2243 | 'last_comment_timestamp' => $entity->created, |
||
| 2244 | )); |
||
| 2245 | } |
||
| 2246 | } |
||
| 2247 | $query->execute();
|
||
| 2248 | } |
||
| 2249 | } |
||
| 2250 | |||
| 2251 | /**
|
||
| 2252 | * Act before the storage backends update field data.
|
||
| 2253 | *
|
||
| 2254 | * This hook allows modules to store data before the Field Storage API,
|
||
| 2255 | * optionally preventing the field storage module from doing so.
|
||
| 2256 | *
|
||
| 2257 | * @param $entity_type
|
||
| 2258 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 2259 | * @param $entity
|
||
| 2260 | * The entity with fields to save.
|
||
| 2261 | * @param $skip_fields
|
||
| 2262 | * An array keyed by field IDs whose data has already been written and
|
||
| 2263 | * therefore should not be written again. The values associated with these
|
||
| 2264 | * keys are not specified.
|
||
| 2265 | * @return
|
||
| 2266 | * Saved field IDs are set set as keys in $skip_fields.
|
||
| 2267 | */
|
||
| 2268 | function hook_field_storage_pre_update($entity_type, $entity, &$skip_fields) { |
||
| 2269 | $first_call = &drupal_static(__FUNCTION__, array()); |
||
| 2270 | |||
| 2271 | if ($entity_type == 'node' && $entity->status && _forum_node_check_node_type($entity)) { |
||
| 2272 | // We don't maintain data for old revisions, so clear all previous values
|
||
| 2273 | // from the table. Since this hook runs once per field, per entity, make
|
||
| 2274 | // sure we only wipe values once.
|
||
| 2275 | if (!isset($first_call[$entity->nid])) { |
||
| 2276 | $first_call[$entity->nid] = FALSE; |
||
| 2277 | db_delete('forum_index')->condition('nid', $entity->nid)->execute(); |
||
| 2278 | } |
||
| 2279 | // Only save data to the table if the node is published.
|
||
| 2280 | if ($entity->status) { |
||
| 2281 | $query = db_insert('forum_index')->fields(array('nid', 'title', 'tid', 'sticky', 'created', 'comment_count', 'last_comment_timestamp')); |
||
| 2282 | foreach ($entity->taxonomy_forums as $language) { |
||
| 2283 | foreach ($language as $delta) { |
||
| 2284 | $query->values(array( |
||
| 2285 | 'nid' => $entity->nid, |
||
| 2286 | 'title' => $entity->title, |
||
| 2287 | 'tid' => $delta['value'], |
||
| 2288 | 'sticky' => $entity->sticky, |
||
| 2289 | 'created' => $entity->created, |
||
| 2290 | 'comment_count' => 0, |
||
| 2291 | 'last_comment_timestamp' => $entity->created, |
||
| 2292 | )); |
||
| 2293 | } |
||
| 2294 | } |
||
| 2295 | $query->execute();
|
||
| 2296 | // The logic for determining last_comment_count is fairly complex, so
|
||
| 2297 | // call _forum_update_forum_index() too.
|
||
| 2298 | _forum_update_forum_index($entity->nid);
|
||
| 2299 | } |
||
| 2300 | } |
||
| 2301 | } |
||
| 2302 | |||
| 2303 | 4444412d | Julien Enselme | /**
|
| 2304 | * @} End of "addtogroup field_storage
|
||
| 2305 | */
|
||
| 2306 | |||
| 2307 | 85ad3d82 | Assos Assos | /**
|
| 2308 | * Returns the maximum weight for the entity components handled by the module.
|
||
| 2309 | *
|
||
| 2310 | * Field API takes care of fields and 'extra_fields'. This hook is intended for
|
||
| 2311 | * third-party modules adding other entity components (e.g. field_group).
|
||
| 2312 | *
|
||
| 2313 | * @param $entity_type
|
||
| 2314 | * The type of entity; e.g. 'node' or 'user'.
|
||
| 2315 | * @param $bundle
|
||
| 2316 | * The bundle name.
|
||
| 2317 | * @param $context
|
||
| 2318 | * The context for which the maximum weight is requested. Either 'form', or
|
||
| 2319 | * the name of a view mode.
|
||
| 2320 | 4444412d | Julien Enselme | *
|
| 2321 | 85ad3d82 | Assos Assos | * @return
|
| 2322 | * The maximum weight of the entity's components, or NULL if no components
|
||
| 2323 | * were found.
|
||
| 2324 | 4444412d | Julien Enselme | *
|
| 2325 | * @ingroup field_info
|
||
| 2326 | 85ad3d82 | Assos Assos | */
|
| 2327 | function hook_field_info_max_weight($entity_type, $bundle, $context) { |
||
| 2328 | $weights = array(); |
||
| 2329 | |||
| 2330 | foreach (my_module_entity_additions($entity_type, $bundle, $context) as $addition) { |
||
| 2331 | $weights[] = $addition['weight']; |
||
| 2332 | } |
||
| 2333 | |||
| 2334 | return $weights ? max($weights) : NULL; |
||
| 2335 | } |
||
| 2336 | |||
| 2337 | 4444412d | Julien Enselme | /**
|
| 2338 | * @addtogroup field_types
|
||
| 2339 | * @{
|
||
| 2340 | */
|
||
| 2341 | |||
| 2342 | 85ad3d82 | Assos Assos | /**
|
| 2343 | * Alters the display settings of a field before it gets displayed.
|
||
| 2344 | *
|
||
| 2345 | * Note that instead of hook_field_display_alter(), which is called for all
|
||
| 2346 | * fields on all entity types, hook_field_display_ENTITY_TYPE_alter() may be
|
||
| 2347 | * used to alter display settings for fields on a specific entity type only.
|
||
| 2348 | *
|
||
| 2349 | * This hook is called once per field per displayed entity. If the result of the
|
||
| 2350 | * hook involves reading from the database, it is highly recommended to
|
||
| 2351 | * statically cache the information.
|
||
| 2352 | *
|
||
| 2353 | * @param $display
|
||
| 2354 | * The display settings that will be used to display the field values, as
|
||
| 2355 | * found in the 'display' key of $instance definitions.
|
||
| 2356 | * @param $context
|
||
| 2357 | * An associative array containing:
|
||
| 2358 | * - entity_type: The entity type; e.g., 'node' or 'user'.
|
||
| 2359 | * - field: The field being rendered.
|
||
| 2360 | * - instance: The instance being rendered.
|
||
| 2361 | * - entity: The entity being rendered.
|
||
| 2362 | * - view_mode: The view mode, e.g. 'full', 'teaser'...
|
||
| 2363 | *
|
||
| 2364 | * @see hook_field_display_ENTITY_TYPE_alter()
|
||
| 2365 | */
|
||
| 2366 | function hook_field_display_alter(&$display, $context) { |
||
| 2367 | // Leave field labels out of the search index.
|
||
| 2368 | // Note: The check against $context['entity_type'] == 'node' could be avoided
|
||
| 2369 | // by using hook_field_display_node_alter() instead of
|
||
| 2370 | // hook_field_display_alter(), resulting in less function calls when
|
||
| 2371 | // rendering non-node entities.
|
||
| 2372 | if ($context['entity_type'] == 'node' && $context['view_mode'] == 'search_index') { |
||
| 2373 | $display['label'] = 'hidden'; |
||
| 2374 | } |
||
| 2375 | } |
||
| 2376 | |||
| 2377 | /**
|
||
| 2378 | * Alters the display settings of a field on a given entity type before it gets displayed.
|
||
| 2379 | *
|
||
| 2380 | * Modules can implement hook_field_display_ENTITY_TYPE_alter() to alter display
|
||
| 2381 | * settings for fields on a specific entity type, rather than implementing
|
||
| 2382 | * hook_field_display_alter().
|
||
| 2383 | *
|
||
| 2384 | * This hook is called once per field per displayed entity. If the result of the
|
||
| 2385 | * hook involves reading from the database, it is highly recommended to
|
||
| 2386 | * statically cache the information.
|
||
| 2387 | *
|
||
| 2388 | * @param $display
|
||
| 2389 | * The display settings that will be used to display the field values, as
|
||
| 2390 | * found in the 'display' key of $instance definitions.
|
||
| 2391 | * @param $context
|
||
| 2392 | * An associative array containing:
|
||
| 2393 | * - entity_type: The entity type; e.g., 'node' or 'user'.
|
||
| 2394 | * - field: The field being rendered.
|
||
| 2395 | * - instance: The instance being rendered.
|
||
| 2396 | * - entity: The entity being rendered.
|
||
| 2397 | * - view_mode: The view mode, e.g. 'full', 'teaser'...
|
||
| 2398 | *
|
||
| 2399 | * @see hook_field_display_alter()
|
||
| 2400 | */
|
||
| 2401 | function hook_field_display_ENTITY_TYPE_alter(&$display, $context) { |
||
| 2402 | // Leave field labels out of the search index.
|
||
| 2403 | if ($context['view_mode'] == 'search_index') { |
||
| 2404 | $display['label'] = 'hidden'; |
||
| 2405 | } |
||
| 2406 | } |
||
| 2407 | |||
| 2408 | 4444412d | Julien Enselme | /**
|
| 2409 | * @} End of "addtogroup field_types
|
||
| 2410 | */
|
||
| 2411 | |||
| 2412 | 85ad3d82 | Assos Assos | /**
|
| 2413 | * Alters the display settings of pseudo-fields before an entity is displayed.
|
||
| 2414 | *
|
||
| 2415 | * This hook is called once per displayed entity. If the result of the hook
|
||
| 2416 | * involves reading from the database, it is highly recommended to statically
|
||
| 2417 | * cache the information.
|
||
| 2418 | *
|
||
| 2419 | * @param $displays
|
||
| 2420 | * An array of display settings for the pseudo-fields in the entity, keyed
|
||
| 2421 | * by pseudo-field names.
|
||
| 2422 | * @param $context
|
||
| 2423 | * An associative array containing:
|
||
| 2424 | * - entity_type: The entity type; e.g., 'node' or 'user'.
|
||
| 2425 | * - bundle: The bundle name.
|
||
| 2426 | * - view_mode: The view mode, e.g. 'full', 'teaser'...
|
||
| 2427 | 4444412d | Julien Enselme | *
|
| 2428 | * @ingroup field_types
|
||
| 2429 | 85ad3d82 | Assos Assos | */
|
| 2430 | function hook_field_extra_fields_display_alter(&$displays, $context) { |
||
| 2431 | if ($context['entity_type'] == 'taxonomy_term' && $context['view_mode'] == 'full') { |
||
| 2432 | $displays['description']['visible'] = FALSE; |
||
| 2433 | } |
||
| 2434 | } |
||
| 2435 | |||
| 2436 | /**
|
||
| 2437 | * Alters the widget properties of a field instance on a given entity type
|
||
| 2438 | * before it gets displayed.
|
||
| 2439 | *
|
||
| 2440 | * Modules can implement hook_field_widget_properties_ENTITY_TYPE_alter() to
|
||
| 2441 | * alter the widget properties for fields on a specific entity type, rather than
|
||
| 2442 | * implementing hook_field_widget_properties_alter().
|
||
| 2443 | *
|
||
| 2444 | * This hook is called once per field per displayed widget entity. If the result
|
||
| 2445 | * of the hook involves reading from the database, it is highly recommended to
|
||
| 2446 | * statically cache the information.
|
||
| 2447 | *
|
||
| 2448 | * @param $widget
|
||
| 2449 | * The instance's widget properties.
|
||
| 2450 | * @param $context
|
||
| 2451 | * An associative array containing:
|
||
| 2452 | * - entity_type: The entity type; e.g., 'node' or 'user'.
|
||
| 2453 | * - entity: The entity object.
|
||
| 2454 | * - field: The field that the widget belongs to.
|
||
| 2455 | * - instance: The instance of the field.
|
||
| 2456 | *
|
||
| 2457 | * @see hook_field_widget_properties_alter()
|
||
| 2458 | 4444412d | Julien Enselme | *
|
| 2459 | * @ingroup field_widget
|
||
| 2460 | 85ad3d82 | Assos Assos | */
|
| 2461 | function hook_field_widget_properties_ENTITY_TYPE_alter(&$widget, $context) { |
||
| 2462 | // Change a widget's type according to the time of day.
|
||
| 2463 | $field = $context['field']; |
||
| 2464 | if ($field['field_name'] == 'field_foo') { |
||
| 2465 | $time = date('H'); |
||
| 2466 | $widget['type'] = $time < 12 ? 'widget_am' : 'widget_pm'; |
||
| 2467 | } |
||
| 2468 | } |
||
| 2469 | |||
| 2470 | /**
|
||
| 2471 | * @addtogroup field_crud
|
||
| 2472 | * @{
|
||
| 2473 | */
|
||
| 2474 | |||
| 2475 | /**
|
||
| 2476 | * Act on a field being created.
|
||
| 2477 | *
|
||
| 2478 | * This hook is invoked from field_create_field() after the field is created, to
|
||
| 2479 | * allow modules to act on field creation.
|
||
| 2480 | *
|
||
| 2481 | * @param $field
|
||
| 2482 | * The field just created.
|
||
| 2483 | */
|
||
| 2484 | function hook_field_create_field($field) { |
||
| 2485 | // @todo Needs function body.
|
||
| 2486 | } |
||
| 2487 | |||
| 2488 | /**
|
||
| 2489 | * Act on a field instance being created.
|
||
| 2490 | *
|
||
| 2491 | * This hook is invoked from field_create_instance() after the instance record
|
||
| 2492 | * is saved, so it cannot be used to modify the instance itself.
|
||
| 2493 | *
|
||
| 2494 | * @param $instance
|
||
| 2495 | * The instance just created.
|
||
| 2496 | */
|
||
| 2497 | function hook_field_create_instance($instance) { |
||
| 2498 | // @todo Needs function body.
|
||
| 2499 | } |
||
| 2500 | |||
| 2501 | /**
|
||
| 2502 | * Forbid a field update from occurring.
|
||
| 2503 | *
|
||
| 2504 | * Any module may forbid any update for any reason. For example, the
|
||
| 2505 | * field's storage module might forbid an update if it would change
|
||
| 2506 | * the storage schema while data for the field exists. A field type
|
||
| 2507 | * module might forbid an update if it would change existing data's
|
||
| 2508 | * semantics, or if there are external dependencies on field settings
|
||
| 2509 | * that cannot be updated.
|
||
| 2510 | *
|
||
| 2511 | * To forbid the update from occurring, throw a FieldUpdateForbiddenException.
|
||
| 2512 | *
|
||
| 2513 | * @param $field
|
||
| 2514 | * The field as it will be post-update.
|
||
| 2515 | * @param $prior_field
|
||
| 2516 | * The field as it is pre-update.
|
||
| 2517 | * @param $has_data
|
||
| 2518 | * Whether any data already exists for this field.
|
||
| 2519 | */
|
||
| 2520 | function hook_field_update_forbid($field, $prior_field, $has_data) { |
||
| 2521 | // A 'list' field stores integer keys mapped to display values. If
|
||
| 2522 | // the new field will have fewer values, and any data exists for the
|
||
| 2523 | // abandoned keys, the field will have no way to display them. So,
|
||
| 2524 | // forbid such an update.
|
||
| 2525 | if ($has_data && count($field['settings']['allowed_values']) < count($prior_field['settings']['allowed_values'])) { |
||
| 2526 | // Identify the keys that will be lost.
|
||
| 2527 | $lost_keys = array_diff(array_keys($field['settings']['allowed_values']), array_keys($prior_field['settings']['allowed_values'])); |
||
| 2528 | // If any data exist for those keys, forbid the update.
|
||
| 2529 | $query = new EntityFieldQuery(); |
||
| 2530 | $found = $query |
||
| 2531 | ->fieldCondition($prior_field['field_name'], 'value', $lost_keys) |
||
| 2532 | ->range(0, 1) |
||
| 2533 | ->execute(); |
||
| 2534 | if ($found) { |
||
| 2535 | throw new FieldUpdateForbiddenException("Cannot update a list field not to include keys with existing data"); |
||
| 2536 | } |
||
| 2537 | } |
||
| 2538 | } |
||
| 2539 | |||
| 2540 | /**
|
||
| 2541 | * Act on a field being updated.
|
||
| 2542 | *
|
||
| 2543 | * This hook is invoked just after field is updated in field_update_field().
|
||
| 2544 | *
|
||
| 2545 | * @param $field
|
||
| 2546 | * The field as it is post-update.
|
||
| 2547 | * @param $prior_field
|
||
| 2548 | * The field as it was pre-update.
|
||
| 2549 | * @param $has_data
|
||
| 2550 | * Whether any data already exists for this field.
|
||
| 2551 | */
|
||
| 2552 | function hook_field_update_field($field, $prior_field, $has_data) { |
||
| 2553 | // Reset the static value that keeps track of allowed values for list fields.
|
||
| 2554 | drupal_static_reset('list_allowed_values');
|
||
| 2555 | } |
||
| 2556 | |||
| 2557 | /**
|
||
| 2558 | * Act on a field being deleted.
|
||
| 2559 | *
|
||
| 2560 | * This hook is invoked just after a field is deleted by field_delete_field().
|
||
| 2561 | *
|
||
| 2562 | * @param $field
|
||
| 2563 | * The field just deleted.
|
||
| 2564 | */
|
||
| 2565 | function hook_field_delete_field($field) { |
||
| 2566 | // @todo Needs function body.
|
||
| 2567 | } |
||
| 2568 | |||
| 2569 | /**
|
||
| 2570 | * Act on a field instance being updated.
|
||
| 2571 | *
|
||
| 2572 | * This hook is invoked from field_update_instance() after the instance record
|
||
| 2573 | * is saved, so it cannot be used by a module to modify the instance itself.
|
||
| 2574 | *
|
||
| 2575 | * @param $instance
|
||
| 2576 | * The instance as it is post-update.
|
||
| 2577 | * @param $prior_instance
|
||
| 2578 | * The instance as it was pre-update.
|
||
| 2579 | */
|
||
| 2580 | function hook_field_update_instance($instance, $prior_instance) { |
||
| 2581 | // @todo Needs function body.
|
||
| 2582 | } |
||
| 2583 | |||
| 2584 | /**
|
||
| 2585 | * Act on a field instance being deleted.
|
||
| 2586 | *
|
||
| 2587 | * This hook is invoked from field_delete_instance() after the instance is
|
||
| 2588 | * deleted.
|
||
| 2589 | *
|
||
| 2590 | * @param $instance
|
||
| 2591 | * The instance just deleted.
|
||
| 2592 | */
|
||
| 2593 | function hook_field_delete_instance($instance) { |
||
| 2594 | // @todo Needs function body.
|
||
| 2595 | } |
||
| 2596 | |||
| 2597 | /**
|
||
| 2598 | * Act on field records being read from the database.
|
||
| 2599 | *
|
||
| 2600 | * This hook is invoked from field_read_fields() on each field being read.
|
||
| 2601 | *
|
||
| 2602 | * @param $field
|
||
| 2603 | * The field record just read from the database.
|
||
| 2604 | */
|
||
| 2605 | function hook_field_read_field($field) { |
||
| 2606 | // @todo Needs function body.
|
||
| 2607 | } |
||
| 2608 | |||
| 2609 | /**
|
||
| 2610 | * Act on a field record being read from the database.
|
||
| 2611 | *
|
||
| 2612 | * This hook is invoked from field_read_instances() on each instance being read.
|
||
| 2613 | *
|
||
| 2614 | * @param $instance
|
||
| 2615 | * The instance record just read from the database.
|
||
| 2616 | */
|
||
| 2617 | function hook_field_read_instance($instance) { |
||
| 2618 | // @todo Needs function body.
|
||
| 2619 | } |
||
| 2620 | |||
| 2621 | /**
|
||
| 2622 | * Acts when a field record is being purged.
|
||
| 2623 | *
|
||
| 2624 | * In field_purge_field(), after the field configuration has been
|
||
| 2625 | * removed from the database, the field storage module has had a chance to
|
||
| 2626 | * run its hook_field_storage_purge_field(), and the field info cache
|
||
| 2627 | * has been cleared, this hook is invoked on all modules to allow them to
|
||
| 2628 | * respond to the field being purged.
|
||
| 2629 | *
|
||
| 2630 | * @param $field
|
||
| 2631 | * The field being purged.
|
||
| 2632 | */
|
||
| 2633 | function hook_field_purge_field($field) { |
||
| 2634 | db_delete('my_module_field_info')
|
||
| 2635 | ->condition('id', $field['id']) |
||
| 2636 | ->execute(); |
||
| 2637 | } |
||
| 2638 | |||
| 2639 | /**
|
||
| 2640 | * Acts when a field instance is being purged.
|
||
| 2641 | *
|
||
| 2642 | * In field_purge_instance(), after the field instance has been
|
||
| 2643 | * removed from the database, the field storage module has had a chance to
|
||
| 2644 | * run its hook_field_storage_purge_instance(), and the field info cache
|
||
| 2645 | * has been cleared, this hook is invoked on all modules to allow them to
|
||
| 2646 | * respond to the field instance being purged.
|
||
| 2647 | *
|
||
| 2648 | * @param $instance
|
||
| 2649 | * The instance being purged.
|
||
| 2650 | */
|
||
| 2651 | function hook_field_purge_instance($instance) { |
||
| 2652 | db_delete('my_module_field_instance_info')
|
||
| 2653 | ->condition('id', $instance['id']) |
||
| 2654 | ->execute(); |
||
| 2655 | } |
||
| 2656 | |||
| 2657 | /**
|
||
| 2658 | * Remove field storage information when a field record is purged.
|
||
| 2659 | *
|
||
| 2660 | * Called from field_purge_field() to allow the field storage module
|
||
| 2661 | * to remove field information when a field is being purged.
|
||
| 2662 | *
|
||
| 2663 | * @param $field
|
||
| 2664 | * The field being purged.
|
||
| 2665 | 4444412d | Julien Enselme | *
|
| 2666 | * @ingroup field_storage
|
||
| 2667 | 85ad3d82 | Assos Assos | */
|
| 2668 | function hook_field_storage_purge_field($field) { |
||
| 2669 | $table_name = _field_sql_storage_tablename($field); |
||
| 2670 | $revision_name = _field_sql_storage_revision_tablename($field); |
||
| 2671 | db_drop_table($table_name);
|
||
| 2672 | db_drop_table($revision_name);
|
||
| 2673 | } |
||
| 2674 | |||
| 2675 | /**
|
||
| 2676 | * Remove field storage information when a field instance is purged.
|
||
| 2677 | *
|
||
| 2678 | * Called from field_purge_instance() to allow the field storage module
|
||
| 2679 | * to remove field instance information when a field instance is being
|
||
| 2680 | * purged.
|
||
| 2681 | *
|
||
| 2682 | * @param $instance
|
||
| 2683 | * The instance being purged.
|
||
| 2684 | 4444412d | Julien Enselme | *
|
| 2685 | * @ingroup field_storage
|
||
| 2686 | 85ad3d82 | Assos Assos | */
|
| 2687 | function hook_field_storage_purge_field_instance($instance) { |
||
| 2688 | db_delete('my_module_field_instance_info')
|
||
| 2689 | ->condition('id', $instance['id']) |
||
| 2690 | ->execute(); |
||
| 2691 | } |
||
| 2692 | |||
| 2693 | /**
|
||
| 2694 | * Remove field storage information when field data is purged.
|
||
| 2695 | *
|
||
| 2696 | * Called from field_purge_data() to allow the field storage
|
||
| 2697 | * module to delete field data information.
|
||
| 2698 | *
|
||
| 2699 | * @param $entity_type
|
||
| 2700 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 2701 | * @param $entity
|
||
| 2702 | * The pseudo-entity whose field data to delete.
|
||
| 2703 | * @param $field
|
||
| 2704 | * The (possibly deleted) field whose data is being purged.
|
||
| 2705 | * @param $instance
|
||
| 2706 | * The deleted field instance whose data is being purged.
|
||
| 2707 | 4444412d | Julien Enselme | *
|
| 2708 | * @ingroup field_storage
|
||
| 2709 | 85ad3d82 | Assos Assos | */
|
| 2710 | function hook_field_storage_purge($entity_type, $entity, $field, $instance) { |
||
| 2711 | list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity); |
||
| 2712 | |||
| 2713 | $table_name = _field_sql_storage_tablename($field); |
||
| 2714 | $revision_name = _field_sql_storage_revision_tablename($field); |
||
| 2715 | db_delete($table_name)
|
||
| 2716 | ->condition('entity_type', $entity_type) |
||
| 2717 | ->condition('entity_id', $id) |
||
| 2718 | ->execute(); |
||
| 2719 | db_delete($revision_name)
|
||
| 2720 | ->condition('entity_type', $entity_type) |
||
| 2721 | ->condition('entity_id', $id) |
||
| 2722 | ->execute(); |
||
| 2723 | } |
||
| 2724 | |||
| 2725 | /**
|
||
| 2726 | * @} End of "addtogroup field_crud".
|
||
| 2727 | */
|
||
| 2728 | |||
| 2729 | /**
|
||
| 2730 | * Determine whether the user has access to a given field.
|
||
| 2731 | *
|
||
| 2732 | * This hook is invoked from field_access() to let modules block access to
|
||
| 2733 | * operations on fields. If no module returns FALSE, the operation is allowed.
|
||
| 2734 | *
|
||
| 2735 | * @param $op
|
||
| 2736 | * The operation to be performed. Possible values: 'edit', 'view'.
|
||
| 2737 | * @param $field
|
||
| 2738 | * The field on which the operation is to be performed.
|
||
| 2739 | * @param $entity_type
|
||
| 2740 | * The type of $entity; for example, 'node' or 'user'.
|
||
| 2741 | * @param $entity
|
||
| 2742 | * (optional) The entity for the operation.
|
||
| 2743 | * @param $account
|
||
| 2744 | * (optional) The account to check; if not given use currently logged in user.
|
||
| 2745 | *
|
||
| 2746 | * @return
|
||
| 2747 | * TRUE if the operation is allowed, and FALSE if the operation is denied.
|
||
| 2748 | 4444412d | Julien Enselme | *
|
| 2749 | * @ingroup field_types
|
||
| 2750 | 85ad3d82 | Assos Assos | */
|
| 2751 | function hook_field_access($op, $field, $entity_type, $entity, $account) { |
||
| 2752 | if ($field['field_name'] == 'field_of_interest' && $op == 'edit') { |
||
| 2753 | return user_access('edit field of interest', $account); |
||
| 2754 | } |
||
| 2755 | return TRUE; |
||
| 2756 | } |
||
| 2757 | |||
| 2758 | /**
|
||
| 2759 | * @} End of "addtogroup hooks".
|
||
| 2760 | */ |