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<?php
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/**
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* @file
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* Plugin to provide a relationship handler for a field collection field.
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*/
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// Plugin definition.
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$plugin = array(
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'title' => t('Field collection item'),
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'description' => t('Creates an entity context from a field collection field on a field.'),
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'context' => 'field_collection_field_collection_from_field_context',
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'edit form' => 'field_collection_field_collection_from_field_edit_form',
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'get child' => 'field_collection_field_collection_from_field_get_child',
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'get children' => 'field_collection_field_collection_from_field_get_children',
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'defaults' => array('delta' => 0),
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);
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/**
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* Get child callback.
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*/
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function field_collection_field_collection_from_field_get_child($plugin, $parent, $child) {
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$plugins = field_collection_field_collection_from_field_get_children($plugin, $parent);
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return $plugins[$parent . ':' . $child];
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}
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/**
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* Get children callback.
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*/
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function field_collection_field_collection_from_field_get_children($plugin, $parent) {
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$plugins = array();
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$instances_info = field_info_instances();
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if (isset($instances_info['field_collection_item'])) {
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$field_collection_items = $instances_info['field_collection_item'];
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foreach (field_read_instances() as $instance) {
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if (isset($field_collection_items[$instance['field_name']])) {
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$child_plugin_id = $parent . ':' . $instance['entity_type'] . ':' . $instance['bundle'] . ':' . $instance['field_name'];
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$child_plugin = $plugin;
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$child_plugin['context name'] = $instance['entity_type'] . ':' . $instance['bundle'] . ':' . $instance['field_name'];
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$child_plugin['title'] = t(
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'!label field collection (!field_name) from !entity_type (!bundle)',
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array(
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'!label' => $instance['label'],
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'!field_name' => $instance['field_name'],
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'!entity_type' => $instance['entity_type'],
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'!bundle' => $instance['bundle'],
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)
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);
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$restrictions = array('type' => array($instance['bundle']));
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$child_plugin['required context'] = new ctools_context_required(ucfirst($instance['entity_type']), $instance['entity_type'], $restrictions);
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$child_plugin['parent'] = $parent;
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$child_plugin['keyword'] = 'Field collection';
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$child_plugin['entity_type'] = $instance['entity_type'];
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$child_plugin['field_name'] = $instance['field_name'];
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$child_plugin['name'] = $child_plugin_id;
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$plugins[$child_plugin_id] = $child_plugin;
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}
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}
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}
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return $plugins;
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}
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/**
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* Return a new field collection context based on an existing context.
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*/
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function field_collection_field_collection_from_field_context($context, $conf) {
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$plugin_info = ctools_get_relationship($conf['name']);
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$delta = (int) $conf['delta'];
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$entity = $context->data;
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if (isset($entity->{$plugin_info['field_name']})) {
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$items = field_get_items($plugin_info['entity_type'], $entity, $plugin_info['field_name']);
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if (!empty($items) && isset($items[$delta]['value'])) {
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$field_collection_item = field_collection_item_load($items[$delta]['value']);
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}
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return ctools_context_create('entity:field_collection_item', $items[$delta]['value']);
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}
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return ctools_context_create_empty('entity:field_collection_item', NULL);
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}
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/**
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* Settings form.
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*/
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function field_collection_field_collection_from_field_edit_form($form, &$form_state) {
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$conf = $form_state['conf'];
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$form['delta'] = array(
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'#type' => 'textfield',
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'#title' => t('Delta'),
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'#size' => 3,
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'#description' => t('The relationship can only create one context, but multiple items can be related. Please type in the number you want. The first one will be 0.'),
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'#default_value' => empty($conf['delta']) ? 0 : $conf['delta'],
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);
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return $form;
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}
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