EditController::actionMissingdelete PHP Method

    public function actionMissingdelete($id)
    {
        if (Yii::app()->getRequest()->getIsPostRequest()) {
            $model = MessageSource::model()->findByPk($id);
            if ($model->delete()) {
                if (Yii::app()->getRequest()->getIsAjaxRequest()) {
                    echo TranslateModule::t('Message deleted successfully');
                    Yii::app()->end();
                } else {
                    $this->redirect(Yii::app()->getRequest()->getUrlReferrer());
                }
            }
        } else {
            throw new CHttpException(400);
        }
    }