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 [];
    }
}