public function run()
{
$ids = array_reverse($_POST['File']);
$files = new MediaFile('sort');
$case = SqlHelper::arrToCase('id', array_flip($ids), 't');
$arr = implode(',', $ids);
Yii::app()->db->getCommandBuilder()->createSqlCommand("UPDATE {$files->tableName()} AS t SET t.order = {$case} WHERE t.id IN ({$arr})")->execute();
}