function _filter_get_file_ids_by_field

Finds all files referenced (data-file-id) by processed text fields.

Parameters

EntityInterface $entity: An entity whose fields to analyze.

Return value

array: An array of file entity FIDs.

File

core/modules/filter/filter.module, line 1844

Framework for handling the filtering of content.

Code

function _filter_get_file_ids_by_field(EntityInterface $entity) {
  $fids = array();

  $processed_text_fields = _filter_get_processed_text_fields($entity);
  foreach ($processed_text_fields as $processed_text_field) {
    $fids[$processed_text_field] = array();
    if (isset($entity->$processed_text_field)) {
      foreach ($entity->$processed_text_field as $langcode => $values) {
        foreach ($values as $delta => $text) {
          if (isset($text['value'])) {
            $fids[$processed_text_field] = array_merge($fids[$processed_text_field], filter_parse_file_fids($text['value']));
          }
          if (isset($text['summary'])) {
            $fids[$processed_text_field] = array_merge($fids[$processed_text_field], filter_parse_file_fids($text['summary']));
          }
        }
      }
    }
    $fids[$processed_text_field] = array_unique($fids[$processed_text_field]);
  }
  return $fids;
}