Club Drupal

 * This hook allows modules to determine whether a field collection is empty

 * before it is saved.

 *

 *   Whether or not the field should be considered empty.

 * @param FieldCollectionItemEntity $item

 *   The field collection we are currently operating on.

    case 'field_my_first_collection':

      $item_wrapper = entity_metadata_wrapper('field_collection_item', $item);

      $author = $item_wrapper->field_author->value();

      return "{$title} by {$author}";