class EntityReferenceSelectionHandlerGeneric_taxonomy_term

entityreference_autoload_info in core/modules/entityreference/entityreference.module

Implements hook_autoload_info().

class EntityReferenceSelectionHandlerGeneric_taxonomy_term extends EntityReferenceSelectionHandlerGeneric {

  protected $label_key = 'name';

  public function entityFieldQueryAlter(SelectQueryInterface $query) {
    // Ensure that taxonomy terms cannot be viewed when the user doesn't have
    // access to the vocabulary.
    $base_table = $this->ensureBaseTable($query);
    $tag = 'taxonomy_vocabulary_access';
    $query->addTag($tag);
    backdrop_alter(array('query', 'query_' . $tag), $query);
  }

  /**
   * Implements EntityReferenceHandler::getReferencableEntities().
   */
  public function getReferencableEntities($match = NULL, $match_operator = 'CONTAINS', $limit = 0) {
    if ($match || $limit) {
      return parent::getReferencableEntities($match, $match_operator, $limit);
    }

    $options = array();
    $entity_type = $this->field['settings']['target_type'];

    $entity_info = entity_get_info('taxonomy_term');
    $bundles = !empty($this->field['settings']['handler_settings']['target_bundles']) ? $this->field['settings']['handler_settings']['target_bundles'] : array_keys($entity_info['bundles']);

    foreach ($bundles as $bundle) {
      if ($vocabulary = taxonomy_vocabulary_load($bundle)) {
        if ($terms = taxonomy_get_tree($vocabulary->machine_name, 0, NULL, TRUE)) {
          foreach ($terms as $term) {
            $options[$vocabulary->machine_name][$term->tid] = str_repeat('-', $term->depth) . check_plain(entity_label('taxonomy_term', $term));
          }
        }
      }
    }

    return $options;
  }
}