ShopController::actionUpdate PHP Method

    public function actionUpdate($id)
    {
        $model = ARBizShop::model()->findByPk($id);
        if ($model == NULL) {
            $this->go('该分店不存在', Yii::app()->request->urlReferrer);
        }
        $model->setScenario('sell');
        $this->performAjaxValidation($model);
        if (Yii::app()->request->isPostRequest && !empty($_POST['ARBizShop'])) {
            $model->attributes = $_POST['ARBizShop'];
            if ($model->save()) {
                $this->go('<strong>分店修改成功</strong>', $_POST['return_url'], 'success');
            }
        }
        $this->render('update', array('model' => $model));
    }