getRequest()->getIsAjaxRequest()) { $all = array(); if(!empty($db) && Yii::app()->hasComponent($db)!==false && (Yii::app()->getComponent($db) instanceof CDbConnection)) $all=array_keys(Yii::app()->{$db}->schema->getTables()); echo json_encode($all); } else throw new CHttpException(404,'The requested page does not exist.'); } }