function menu_link_field_update in Menu Link (Field) 7

Implements hook_field_update().

File

./menu_link.field.inc, line 227

Defines a menu link field type.

Code

function menu_link_field_update($entity_type, $entity, $field, $instance, $langcode, &$items) {
  list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);

  // Load the field items as they are stored in the database before update.
  $original = entity_create_stub_entity($entity_type, array(
    $id,
    $vid,
    $bundle,
  ));
  field_attach_load($entity_type, array(
    $id => $original,
  ), FIELD_LOAD_CURRENT, $options = array(
    'field_id' => $field['id'],
  ));

  // Initially asume that all links are being deleted; later on in this function,
  // links that are kept are removed from this array.
  $delete_links = array();
  if (!empty($original->{$instance['field_name']}[$langcode])) {
    foreach ($original->{$instance['field_name']}[$langcode] as $item) {
      $delete_links[$item['mlid']] = $item['mlid'];
    }
  }
  $path = _menu_link_path($entity_type, $entity, $langcode);
  foreach ($items as $delta => &$item) {
    if (empty($field['settings']['link_path_field']) || empty($item['link_path'])) {
      $item['link_path'] = $path;
    }

    // If the options array was serialized on a previous insert or update,
    // unserialize it back to an array for menu_link_save().
    if (isset($item['options']) && is_string($item['options'])) {
      $item['options'] = unserialize($item['options']);
    }

    // If field is not translatable, make menu item same language as entity.
    if (!$field['translatable'] && !empty($entity->language)) {
      $item['language'] = $entity->language;
      $item['options']['langcode'] = $entity->language;
    }
    if (!menu_link_save($item)) {
      drupal_set_message(t('There was an error saving the menu link.'), 'error');

      // TODO what to do?
    }
    else {

      // Workaround, menu_link_save during entity creation process
      // can lead to incomplete cache entries, let's discard those.
      $cid = "field:{$entity_type}:{$entity->id}";
      cache_clear_all($cid, 'cache_field');
    }
    $item['options'] = serialize($item['options']);

    // Don't remove menu links that are being kept.
    unset($delete_links[$item['mlid']]);
  }

  // Delete any menu links that are no longer used.
  if (!empty($delete_links)) {
    menu_link_delete_multiple($delete_links);
  }
}