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- <?php
- /**
- * @file
- * Provide Diff module field callbacks for the Entity Reference module.
- */
- /**
- * Diff field callback for preloading entities.
- */
- function entityreference_field_diff_view_prepare(&$old_items, &$new_items, $context) {
- $field = $context['field'];
- // Build an array of entities ID.
- $entity_ids = array();
- foreach (array_merge_recursive($old_items, $new_items) as $item) {
- $entity_ids[] = $item['target_id'];
- }
- // Load those entities and loop through them to extract their labels.
- $entities = entity_load($field['settings']['target_type'], $entity_ids);
- foreach ($old_items as $delta => $info) {
- $old_items[$delta]['entity'] = isset($entities[$info['target_id']]) ? $entities[$info['target_id']] : NULL;
- }
- foreach ($new_items as $delta => $info) {
- $new_items[$delta]['entity'] = isset($entities[$info['target_id']]) ? $entities[$info['target_id']] : NULL;
- }
- }
- /**
- * Diff field callback for parsing entity field comparative values.
- */
- function entityreference_field_diff_view($items, $context) {
- $field = $context['field'];
- $instance = $context['instance'];
- $settings = $context['settings'];
- $entity_type = $field['settings']['target_type'];
- $diff_items = array();
- // We populate as much as possible to allow the best flexability in any
- // string overrides.
- $t_args = array();
- $t_args['!entity_type'] = $entity_type;
- $entity_info = entity_get_info($entity_type);
- $t_args['!entity_type_label'] = $entity_info['label'];
- foreach ($items as $delta => $item) {
- if (isset($item['entity'])) {
- $output = array();
- list($id,, $bundle) = entity_extract_ids($entity_type, $item['entity']);
- $t_args['!id'] = $id;
- $t_args['!bundle'] = $bundle;
- $t_args['!diff_entity_label'] = entity_label($entity_type, $item['entity']);
- $output['entity'] = t('!diff_entity_label', $t_args);
- if ($settings['show_id']) {
- $output['id'] = t('ID: !id', $t_args);
- }
- $diff_items[$delta] = implode('; ', $output);
- }
- }
- return $diff_items;
- }
- /**
- * Provide default field comparison options.
- */
- function entityreference_field_diff_default_options($field_type) {
- return array(
- 'show_id' => 0,
- );
- }
- /**
- * Provide a form for setting the field comparison options.
- */
- function entityreference_field_diff_options_form($field_type, $settings) {
- $options_form = array();
- $options_form['show_id'] = array(
- '#type' => 'checkbox',
- '#title' => t('Show ID'),
- '#default_value' => $settings['show_id'],
- );
- return $options_form;
- }
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