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85ad3d82
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Assos Assos
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<?php
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/**
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* Implements field hook_field_info().
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*/
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function computed_field_field_info() {
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return array(
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'computed' => array(
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'label' => t('Computed'),
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'description' => t('Create field data via PHP code.'),
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'settings' => array(
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'code' => '$entity_field[0][\'value\'] = "";',
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'display_format' => '$display_output = $entity_field_item[\'value\'];',
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'store' => 1,
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'database' => array(
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'data_type' => 'varchar',
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'data_length' => 32,
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'data_size' => 'normal',
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'data_precision' => 10,
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'data_scale' => 2,
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'data_not_NULL' => FALSE,
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'data_default' => NULL,
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'data_index' => FALSE,
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),
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),
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'default_widget' => 'computed',
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'default_formatter' => 'computed_field_plain',
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// If we followed the core convention of separate fields for each data
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// type we could make Entity API happy by just setting a property_type.
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// Instead we have to use our own callback to determine the type then
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// rerun theirs to setup the rest of the field properties.
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'property_callbacks' => array('computed_field_entity_property_callback'),
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),
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);
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}
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/**
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* Callback to setup Entity API's field properties.
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*/
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function computed_field_entity_property_callback(&$info, $entity_type, $field, $instance, $field_type) {
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$property_types = array(
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'int' => 'integer',
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'float' => 'decimal', 'numeric' => 'decimal',
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'varchar' => 'text', 'text' => 'text', 'longtext' => 'text',
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);
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if (isset($field['columns']['value']) && isset($property_types[$field['columns']['value']['type']])) {
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// Entity API's defaults are pretty good so set the property_type and let
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// them do the work for us.
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$field_type['property_type'] = $property_types[$field['columns']['value']['type']];
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entity_metadata_field_default_property_callback($info, $entity_type, $field, $instance, $field_type);
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// The only thing is that a setter doesn't make sense, so let's disable it.
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$property = &$info[$entity_type]['bundles'][$instance['bundle']]['properties'][$field['field_name']];
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unset($property['setter callback']);
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}
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}
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/**
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* Implements of hook_field_settings_form().
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*/
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function computed_field_field_settings_form($field, $instance, $has_data) {
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$form = array();
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$compute_func = 'computed_field_' . $field['field_name'] . '_compute';
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$display_func = 'computed_field_' . $field['field_name'] . '_display';
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$settings = $field['settings'];
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$form['#element_validate'] = array('computed_field_field_settings_form_validate');
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$form['code'] = array(
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'#type' => 'textarea',
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'#rows' => 15,
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'#title' => t('Computed Code (PHP)'),
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'#description' => t('The variables available to your code include: <code>@fields</code>. To set the value of the field, set <code>@entity_field</code>. For multi-value computed fields continue with <code>@entity_field_multi</code>. Here\'s a simple example which sets the computed field\'s value to the value of the sum of the number fields (<code>@field_a</code> and <code>@field_b</code>) in a node entity:<p><code>@example</code> The first pop fetches the last (or only) item from the field while the second pop fetches its <code>[\'value\']</code> contents (assuming it\'s the only key that\'s set).<p>Alternately, this code can be supplied by your own custom function named: <code>@compute_func(&$entity_field, $entity_type, $entity, $field, $instance, $langcode, $items)</code>',
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array('@fields' => '&$entity_field, $entity_type, $entity, $field, $instance, $langcode, and $items',
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'@entity_field' => '$entity_field[0][\'value\']',
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'@entity_field_multi' => '$entity_field[1][\'value\']',
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'@field_a' => 'field_a',
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'@field_b' => 'field_b',
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'@example' => '$entity_field[0][\'value\'] = array_pop(array_pop(field_get_items($entity_type, $entity, \'field_a\'))) + array_pop(array_pop(field_get_items($entity_type, $entity, \'field_b\')));',
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'@compute_func' => $compute_func)),
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'#default_value' => !empty($settings['code']) ? $settings['code'] : '$entity_field[0][\'value\'] = "";',
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'#access' => !function_exists($compute_func),
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);
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if (function_exists($compute_func)) {
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$form['compute_func'] = array(
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'#type' => 'item',
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'#markup' => t('<strong>This field is COMPUTED using <code>@compute_func()</code>.</strong>', array('@compute_func' => $compute_func)),
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);
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}
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$form['display_format'] = array(
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'#type' => 'textarea',
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'#title' => t('Display Code (PHP)'),
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'#description' => t('This code should assign a string to the <code>@display_output</code> variable, which will be printed when the field is displayed. The raw computed value of the field is in <code>@value</code>. <strong>Note:</strong> this code has no effect if you use the "Raw computed value" display formatter.<p> Alternately, this code can be supplied by your own custom function named: <code>@display_func($field, $entity_field_item, $entity_lang, $langcode, $entity)</code>. Return the value to be displayed. Original value is in $entity_field_item[\'value\'].',
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array('@display_output' => '$display_output',
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'@value' => '$entity_field_item[\'value\']',
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'@display_func' => $display_func)),
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'#default_value' => !empty($settings['display_format']) ? $settings['display_format'] : '$display_output = $entity_field_item[\'value\'];',
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'#access' => !function_exists($display_func),
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);
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if (function_exists($display_func)) {
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$form['display_func'] = array(
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'#type' => 'item',
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'#markup' => t('<strong>This field is DISPLAYED using <code>@display_func()</code>.</strong>', array('@display_func' => $display_func)),
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);
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}
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$form['store'] = array(
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'#type' => 'checkbox',
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'#title' => t('Store value in the database'),
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'#description' => t('The value will be stored in the database with the settings below. As a result, it will only be recalculated when the entity is updated. This option is required when accessing the field through Views.'),
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'#default_value' => is_numeric($settings['store']) ? $settings['store'] : 1 ,
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'#disabled' => $has_data,
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);
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$form['database'] = array('#type' => 'fieldset', '#title' => t('Database Storage Settings'));
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if ($has_data) {
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$form['database']['warning'] = array(
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'#type' => 'item',
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'#markup' => t('<strong>**This field currently has stored data, so modifications to its DB settings are not allowed.**</strong>'),
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);
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}
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$form['database']['data_type'] = array(
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'#type' => 'radios',
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'#title' => t('Data Type'),
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'#description' => t('The SQL datatype to store this field in.'),
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'#default_value' => !empty($settings['database']['data_type']) ? $settings['database']['data_type'] : 'varchar',
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'#options' => array('varchar' => 'varchar', 'text' => 'text', 'longtext' => 'longtext', 'int' => 'int', 'float' => 'float', 'numeric' => 'decimal'),
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'#required' => FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_length'] = array(
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'#type' => 'textfield',
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'#title' => t('Data Length (varchar/text)'),
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'#description' => t('<strong>Only</strong> valid for <strong>varchar</strong> or <strong>text</strong> fields. The length of the field stored in the database.'),
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'#default_value' => !empty($settings['database']['data_length']) ? $settings['database']['data_length'] : 32,
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'#required' => FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_size'] = array(
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'#type' => 'select',
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'#title' => t('Data Size (int/float)'),
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'#description' => t('<strong>Only</strong> valid for <strong>int</strong> or <strong>float</strong> fields. The size of the field stored in the database.'),
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'#default_value' => !empty($settings['database']['data_size']) ? $settings['database']['data_size'] : 'normal',
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'#options' => array('tiny' => 'tiny', 'small' => 'small', 'medium' => 'medium', 'normal' => 'normal', 'big' => 'big'),
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'#required' => FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_precision'] = array(
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'#type' => 'select',
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'#title' => t('Decimal Precision (decimal)'),
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'#description' => t('<strong>Only</strong> valid for <strong>decimal</strong> fields. The total number of digits to store in the database, including those to the right of the decimal.'),
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'#options' => drupal_map_assoc(range(10, 32)),
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'#default_value' => !empty($settings['database']['data_precision']) ? $settings['database']['data_precision'] : 10,
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'#required' => FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_scale'] = array(
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'#type' => 'select',
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'#title' => t('Decimal Scale (decimal)'),
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'#description' => t('<strong>Only</strong> valid for <strong>decimal</strong> fields. The number of digits to the right of the decimal. '),
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'#options' => drupal_map_assoc(range(0, 10)),
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'#default_value' => !empty($settings['database']['data_scale']) ? $settings['database']['data_scale'] : 2,
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'#required' => FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_default'] = array(
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'#type' => 'textfield',
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'#title' => t('Default Value'),
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'#default_value' => $settings['database']['data_default'],
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'#required' => FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_not_NULL'] = array(
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'#type' => 'checkbox',
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'#title' => t('Not NULL'),
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'#default_value' => is_numeric($settings['database']['data_not_NULL']) ? $settings['database']['data_not_NULL'] : FALSE,
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'#disabled' => $has_data,
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);
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$form['database']['data_index'] = array(
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'#type' => 'checkbox',
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'#title' => t('Index computed values in the database (Does not apply to text or longtext fields.)'),
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'#default_value' => is_numeric($settings['database']['data_index']) ? $settings['database']['data_index'] : FALSE,
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'#disabled' => $has_data,
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);
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return $form;
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}
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/**
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* Implements the #element_validate callback for computed_field_field_settings_form().
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*/
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function computed_field_field_settings_form_validate($element, &$form_state) {
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$settings = $form_state['values']['field']['settings'];
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if ($settings['store']) {
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if (empty($settings['database']['data_type'])) {
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form_set_error('field][settings][data_type', t('To store this field in the database, please specify a data type.'));
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}
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if (($settings['database']['data_type'] == 'text' || $settings['database']['data_type'] == 'varchar') && empty($settings['database']['data_length'])) {
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form_set_error('field][settings][database][data_length', t('To store this field in the database, please specify the data length.'));
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}
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if (($settings['database']['data_type'] == 'int' || $settings['database']['data_type'] == 'float') && (!empty($settings['database']['data_default']) && !is_numeric($settings['database']['data_default']))) {
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form_set_error('field][settings][database][data_default', t('Your default value should be numeric given your data type.'));
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}
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}
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}
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/**
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* Implements field hook_field_load().
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*/
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function computed_field_field_load($entity_type, $entities, $field, $instances, $langcode, &$items, $age) {
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$settings = $field['settings'];
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// Compute field values on load if they aren't stored in the database
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210 |
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if (!$settings['store']) {
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211 |
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foreach ($entities as $etid => $entity) {
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_computed_field_compute_value($entity_type, $entity, $field, $instances, $langcode, $items[$etid]);
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213 |
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}
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}
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215 |
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}
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216 |
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217 |
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/**
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218 |
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* Implements field hook_field_prepare_view().
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219 |
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*/
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220 |
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function computed_field_field_prepare_view($entity_type, $entities, $field, $instances, $langcode, &$items) {
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221 |
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// Compute field values in case user is "previewing" an entity
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222 |
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foreach ($entities as $etid => $entity) {
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223 |
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if (isset($entity->op) && $entity->op == 'Preview') {
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224 |
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_computed_field_compute_value($entity_type, $entity, $field, $instances, $langcode, $items[$etid]);
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225 |
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}
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226 |
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}
|
227 |
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}
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228 |
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|
229 |
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/**
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230 |
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* Implements field hook_field_insert().
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231 |
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*/
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232 |
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function computed_field_field_insert($entity_type, $entity, $field, $instance, $langcode, &$items) {
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233 |
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_computed_field_compute_value($entity_type, $entity, $field, $instance, $langcode, $items);
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234 |
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}
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235 |
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236 |
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/**
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237 |
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* Implements field hook_field_update().
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238 |
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*/
|
239 |
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function computed_field_field_update($entity_type, $entity, $field, $instance, $langcode, &$items) {
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240 |
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_computed_field_compute_value($entity_type, $entity, $field, $instance, $langcode, $items);
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241 |
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}
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242 |
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|
243 |
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/**
|
244 |
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* Implements field hook_field_widget_info().
|
245 |
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*/
|
246 |
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function computed_field_field_widget_info() {
|
247 |
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return array(
|
248 |
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'computed' => array(
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249 |
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'label' => t('Computed'),
|
250 |
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'field types' => array('computed'),
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251 |
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'behaviors' => array(
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252 |
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'multiple values' => FIELD_BEHAVIOR_CUSTOM,
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253 |
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'default value' => FIELD_BEHAVIOR_NONE,
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254 |
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),
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255 |
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),
|
256 |
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);
|
257 |
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}
|
258 |
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|
259 |
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/**
|
260 |
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* Implements field hook_field_widget_form().
|
261 |
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*/
|
262 |
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263 |
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function computed_field_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
|
264 |
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|
265 |
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// If there are no items yet, add a null item value to avoid
|
266 |
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// preview errors when selecting a different language
|
267 |
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if (empty($items)) $items[0]['value'] = NULL;
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268 |
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|
269 |
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foreach ($items as $item_delta => $item) {
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270 |
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$element[$item_delta]['value'] = array(
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271 |
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'#type' => 'value',
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272 |
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'#tree' => TRUE,
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273 |
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'#default_value' => isset($item['value']) ? $item['value'] : NULL,
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274 |
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);
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275 |
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}
|
276 |
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return $element;
|
277 |
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}
|
278 |
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|
279 |
|
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/**
|
280 |
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* Implements hook_field_formatter_info().
|
281 |
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*/
|
282 |
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function computed_field_field_formatter_info() {
|
283 |
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return array(
|
284 |
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'computed_field_unsanitized' => array(
|
285 |
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'label' => t('Unsanitized'),
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286 |
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'field types' => array('computed'),
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287 |
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),
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288 |
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'computed_field_plain' => array(
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289 |
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'label' => t('Plain text'),
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290 |
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'field types' => array('computed'),
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291 |
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),
|
292 |
|
|
'computed_field_markup' => array(
|
293 |
|
|
'label' => t('Filtered markup'),
|
294 |
|
|
'field types' => array('computed'),
|
295 |
|
|
),
|
296 |
|
|
'computed_field_computed_value' => array(
|
297 |
|
|
'label' => t('Raw value, no display code'),
|
298 |
|
|
'field types' => array('computed'),
|
299 |
|
|
),
|
300 |
|
|
);
|
301 |
|
|
}
|
302 |
|
|
|
303 |
|
|
/**
|
304 |
|
|
* Implements hook_field_formatter_view().
|
305 |
|
|
*/
|
306 |
|
|
function computed_field_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
|
307 |
|
|
$element = array();
|
308 |
|
|
|
309 |
|
|
// Special case formatter that returns the raw computed values without any display code processing
|
310 |
|
|
if ($display['type'] == "computed_field_computed_value") {
|
311 |
|
|
foreach ($items as $delta => $item) {
|
312 |
|
|
if (!isset($entity_field_item['value'])) $entity_field_item['value'] = NULL;
|
313 |
|
|
$element[$delta] = array('#markup' => $item['value']);
|
314 |
|
|
}
|
315 |
|
|
return $element;
|
316 |
|
|
}
|
317 |
|
|
|
318 |
|
|
// Other display formatters which run through display code processing
|
319 |
|
|
// Check if the value is to be formatted by a display function outside the DB
|
320 |
|
|
$display_func = 'computed_field_' . $field['field_name'] . '_display';
|
321 |
|
|
if (function_exists($display_func)) $display_in_code = TRUE;
|
322 |
|
|
else $display_in_code = FALSE;
|
323 |
|
|
|
324 |
|
|
// Loop the items to display
|
325 |
|
|
foreach ($items as $delta => $item) {
|
326 |
|
|
|
327 |
|
|
// For "some" backwards compatibility
|
328 |
|
|
$entity_field_item = $item;
|
329 |
|
|
|
330 |
|
|
// Setup a variable with the entity language if available
|
331 |
|
|
if (isset($entity->language)) $entity_lang = $entity->language;
|
332 |
|
|
else $entity_lang = LANGUAGE_NONE;
|
333 |
|
|
|
334 |
|
|
// If there are value "holes" in the field array let's set the value to NULL
|
335 |
|
|
// to avoid undefined index errors in typical PHP display code
|
336 |
|
|
if (!isset($entity_field_item['value'])) $entity_field_item['value'] = NULL;
|
337 |
|
|
|
338 |
|
|
// Execute the display code
|
339 |
|
|
$display_output = NULL;
|
340 |
|
|
if ($display_in_code) {
|
341 |
|
|
$display_output = $display_func($field, $entity_field_item, $entity_lang, $langcode, $entity);
|
342 |
|
|
}
|
343 |
|
|
else {
|
344 |
|
|
eval($field['settings']['display_format']);
|
345 |
|
|
}
|
346 |
|
|
|
347 |
|
|
// Output the formatted display item
|
348 |
|
|
switch ($display['type']) {
|
349 |
|
|
case 'computed_field_unsanitized':
|
350 |
|
|
$element[$delta] = array('#markup' => $display_output);
|
351 |
|
|
break;
|
352 |
|
|
case 'computed_field_plain':
|
353 |
|
|
$element[$delta] = array('#markup' => check_plain($display_output));
|
354 |
|
|
break;
|
355 |
|
|
case 'computed_field_markup':
|
356 |
|
|
$element[$delta] = array('#markup' => check_markup($display_output));
|
357 |
|
|
break;
|
358 |
|
|
}
|
359 |
|
|
}
|
360 |
|
|
return $element;
|
361 |
|
|
}
|
362 |
|
|
|
363 |
|
|
/**
|
364 |
|
|
* Implements field hook_field_is_empty().
|
365 |
|
|
*/
|
366 |
|
|
function computed_field_field_is_empty($item, $field) {
|
367 |
|
|
$data_type = $field['settings']['database']['data_type'];
|
368 |
|
|
if ($data_type == 'int' || $data_type == 'float') {
|
369 |
|
|
return !is_numeric($item['value']);
|
370 |
|
|
}
|
371 |
|
|
return empty($item['value']);
|
372 |
|
|
}
|
373 |
|
|
|
374 |
|
|
/**
|
375 |
|
|
* Private function to compute the fields value.
|
376 |
|
|
*/
|
377 |
|
|
function _computed_field_compute_value($entity_type, $entity, $field, $instance, $langcode, &$items) {
|
378 |
|
|
$settings = $field['settings'];
|
379 |
|
|
|
380 |
|
|
// Setup a variable with the field values
|
381 |
|
|
$entity_field =& $items;
|
382 |
|
|
|
383 |
|
|
// Setup a variable with the entity language if available
|
384 |
|
|
if (isset($entity->language)) $entity_lang = $entity->language;
|
385 |
|
|
else $entity_lang = LANGUAGE_NONE;
|
386 |
|
|
|
387 |
|
|
// Allow the value to be computed from code not stored in DB
|
388 |
|
|
$compute_func = 'computed_field_' . $field['field_name'] . '_compute';
|
389 |
|
|
if (function_exists($compute_func)) {
|
390 |
|
|
$compute_func($entity_field, $entity_type, $entity, $field, $instance, $langcode, $items);
|
391 |
|
|
}
|
392 |
|
|
else {
|
393 |
|
|
if (isset($settings['code'])) {
|
394 |
|
|
eval($settings['code']);
|
395 |
|
|
}
|
396 |
|
|
}
|
397 |
|
|
}
|