function entityreference_autocomplete_callback in Entity reference 8

Same name and namespace in other branches

1. 7 entityreference.module \entityreference_autocomplete_callback()

Menu callback: autocomplete the label of an entity.

Parameters

$type: The widget type (i.e. 'single' or 'tags').

$field_name: The name of the entity-reference field.

$entity_type: The entity type.

$bundle_name: The bundle name.

$entity_id: Optional; The entity ID the entity-reference field is attached to. Defaults to ''.

$string: The label of the entity to query by.

1 string reference to 'entityreference_autocomplete_callback'

entityreference_menu in ./entityreference.module

Implements hook_menu().

File

./entityreference.module, line 397

Provides a field that can reference other entities.

Code

function entityreference_autocomplete_callback($type, $field_name, $entity_type, $bundle_name, $entity_id = '', $string = '') {
  $field = field_info_field($field_name);
  $instance = field_info_instance($entity_type, $field_name, $bundle_name);
  $matches = array();
  $target_type = $field['settings']['target_type'];
  $entity = NULL;
  if ($entity_id !== 'NULL') {
    $entity = entity_load($entity_type, $entity_id);

    // TODO: Improve when we have entity_access().
    $entity_access = $target_type == 'node' ? node_access('view', $entity) : TRUE;
    if (!$entity || !$entity_access) {
      return MENU_ACCESS_DENIED;
    }
  }
  $handler = entityreference_get_selection_handler($field, $instance, $entity);
  if ($type == 'tags') {

    // The user enters a comma-separated list of tags. We only autocomplete the last tag.
    $tags_typed = drupal_explode_tags($string);
    $tag_last = drupal_strtolower(array_pop($tags_typed));
    if (!empty($tag_last)) {
      $prefix = count($tags_typed) ? implode(', ', $tags_typed) . ', ' : '';
    }
  }
  else {

    // The user enters a single tag.
    $prefix = '';
    $tag_last = $string;
  }
  if (isset($tag_last)) {

    // Get an array of matching entities.
    $entity_labels = $handler
      ->getReferencableEntities($tag_last, $instance['widget']['settings']['match_operator'], 10);

    // Loop through the products and convert them into autocomplete output.
    foreach ($entity_labels as $entity_id => $label) {
      $key = "{$label} ({$entity_id})";

      // Strip things like starting/trailing white spaces, line breaks and tags.
      $key = preg_replace('/\\s\\s+/', ' ', str_replace("\n", '', trim(decode_entities(strip_tags($key)))));

      // Names containing commas or quotes must be wrapped in quotes.
      if (strpos($key, ',') !== FALSE || strpos($key, '"') !== FALSE) {
        $key = '"' . str_replace('"', '""', $key) . '"';
      }
      $matches[$prefix . $key] = '<div class="reference-autocomplete">' . $label . '</div>';
    }
  }
  return new JsonResponse($matches);
}