function _auditfiles_merge_file_references_update_file_fields in Audit Files 7.3

Updates any fields that might be pointing to the file being merged.

Parameters

int $file_being_kept: The file ID of the file to merge the other into.

int $file_being_merged: The file ID of the file to merge.

1 call to _auditfiles_merge_file_references_update_file_fields()

_auditfiles_merge_file_references_batch_merge_process_file in ./auditfiles.mergefilereferences.inc

Deletes the specified file from the file_managed table.

File

./auditfiles.mergefilereferences.inc, line 826

Generates a report showing & allowing for merging potential duplicate files.

Code

function _auditfiles_merge_file_references_update_file_fields($file_being_kept, $file_being_merged) {

  // Get any fields that might be referencing this file being merged.
  $file_being_merged_fields = file_get_file_references(file_load($file_being_merged));

  // If the variable is empty, there are no fields that reference this file.
  if (empty($file_being_merged_fields)) {
    return;
  }

  // Copied from file.module and modified as necessary.
  // Maybe something like this should be a separate function, so it can be
  // called by other modules.
  // Loop through all references of this file.
  foreach ($file_being_merged_fields as $field_name => $field_references) {
    foreach ($field_references as $entity_type => $type_references) {
      foreach ($type_references as $id => $reference) {

        // Try to load $entity and $field.
        $entity = entity_load($entity_type, array(
          $id,
        ));
        $entity = reset($entity);
        if ($entity) {

          // Load all field items for that entity.
          $field_items = field_get_items($entity_type, $entity, $field_name);

          // Find the field item with the matching file ID.
          foreach ($field_items as $item_id => $item) {
            if ($item['fid'] == $file_being_merged) {
              $file_object_being_kept = file_load($file_being_kept);

              // The file data on the entity is stored as an array, like this:
              // $entity->{$field_name}[LANGUAGE_NONE][$delta][$key] => $value;
              foreach ($entity->{$field_name}[LANGUAGE_NONE][$item_id] as $key => $value) {
                if (!empty($file_object_being_kept->{$key}) && $entity->{$field_name}[LANGUAGE_NONE][$item_id][$key] != $file_object_being_kept->{$key}) {
                  $entity->{$field_name}[LANGUAGE_NONE][$item_id][$key] = $file_object_being_kept->{$key};
                }
              }
              field_attach_update($entity_type, $entity);

              // This is being done outside of an entity save operation, so the
              // cache needs to be cleared for the entity:
              entity_get_controller($entity_type)
                ->resetCache(array(
                $id,
              ));
              break;
            }
          }
        }
      }
    }
  }
}