function video_field_update in Video 7.2

Same name and namespace in other branches

1. 7 video.field.inc \video_field_update()

Implements hook_field_update().

@todo handle new revisions

File

./video.field.inc, line 471

Implement a video field, based on the file module's file field.

Code

function video_field_update($entity_type, $entity, $field, $instance, $langcode, &$items) {

  // The derived files are handled first, because when the original file is deleted first,
  // the derived files can not be looked up anymore.
  // Modification of file_field_update().
  // That function can't be called because the logic for finding
  // existing fids is not the same.
  list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);

  // Register the thumbnails in file_usage
  $thumbnails = _video_field_get_all_thumbnails($field, $items);
  if (!empty($thumbnails)) {
    db_update('file_managed')
      ->fields(array(
      'status' => FILE_STATUS_PERMANENT,
    ))
      ->condition('fid', array_keys($thumbnails), 'IN')
      ->execute();
  }

  // Register the thumbnails in file_usage
  $converted = _video_field_get_all_converted($items);
  $derivedfiles = array_merge($converted, $thumbnails);

  // Build a display of the current FIDs.
  $current_fids = array();
  foreach ($derivedfiles as $item) {
    $current_fids[] = $item['fid'];
  }

  // Create a bare-bones entity so that we can load its previous values.
  $original = entity_create_stub_entity($entity_type, array(
    $id,
    $vid,
    $bundle,
  ));
  field_attach_load($entity_type, array(
    $id => $original,
  ), FIELD_LOAD_CURRENT, array(
    'field_id' => $field['id'],
  ));

  // Compare the original field values with the ones that are being saved.
  $original_fids = array();
  if (!empty($original->{$field['field_name']}[$langcode])) {
    $original_thumbs = _video_field_get_all_thumbnails($field, $original->{$field['field_name']}[$langcode], $entity_type, $id);
    $original_converted = _video_field_get_all_converted($original->{$field['field_name']}[$langcode], $entity_type, $id);
    $original_derivedfiles = array_merge($original_thumbs, $original_converted);
    foreach ($original_derivedfiles as $original_derivedfile) {
      $original_fids[] = $original_derivedfile['fid'];
      if (isset($original_derivedfile['fid']) && !in_array($original_derivedfile['fid'], $current_fids)) {

        // Decrement the file usage count by 1 and delete the file if possible.
        file_field_delete_file($original_derivedfile, $field, $entity_type, $id);
      }
    }
  }

  // Add new usage entries for newly added files.
  foreach ($derivedfiles as $item) {
    if (!in_array($item['fid'], $original_fids)) {
      $file = (object) $item;
      file_usage_add($file, 'file', $entity_type, $id);
    }
  }

  // Process the original file
  file_field_update($entity_type, $entity, $field, $instance, $langcode, $items);
  _video_field_file_autoconversion($entity_type, $entity, $field, $instance, $langcode, $items);
}