function FieldFile::transform

Overrides ProcessPluginBase::transform

File

core/modules/file/src/Plugin/migrate/process/d6/FieldFile.php, line 87

Class

FieldFile

Plugin annotation @MigrateProcessPlugin( id = "d6_field_file" )

Namespace

Code

public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
  $options = unserialize($value['data']);
  // Try to look up the ID of the migrated file. If one cannot be found, it
  // means the file referenced by the current field item did not migrate for
  // some reason -- file migration is notoriously brittle -- and we do NOT
  // want to send invalid file references into the field system (it causes
  // fatals), so return an empty item instead.
  // This BC layer is included because if the plugin constructor was called
  // in the legacy way with a migration_lookup process plugin, it may have
  // been preconfigured with a different migration to look up against. While
  // this is unlikely, for maximum BC we will continue to use the plugin to do
  // the lookup if it is provided, and support for this will be removed in
  // Drupal 9.
  if ($this->migrationPlugin) {
    $fid = $this->migrationPlugin
      ->transform($value['fid'], $migrate_executable, $row, $destination_property);
  }
  else {
    $lookup_result = $this->migrateLookup
      ->lookup('d6_file', [
      $value['fid'],
    ]);
    if ($lookup_result) {
      $fid = $lookup_result[0]['fid'];
    }
  }
  if (!empty($fid)) {
    return [
      'target_id' => $fid,
      'display' => $value['list'],
      'description' => isset($options['description']) ? $options['description'] : '',
      'alt' => isset($options['alt']) ? $options['alt'] : '',
      'title' => isset($options['title']) ? $options['title'] : '',
    ];
  }
  else {
    return [];
  }
}