ProductSpecial::model PHP Method

    public static function model($className = __CLASS__)
    {
        return parent::model($className);
    }

 public function actionUpdate()
 {
     $lid = Yii::app()->request->getParam('id');
     Until::isUpdateValid(array($lid), $this->companyId, $this);
     //0,表示企业任何时候都在云端更新。
     $model = ProductSpecial::model()->find('lid=:lid and dpid=:dpid', array(':lid' => $lid, ':dpid' => $this->companyId));
     $product = Product::model()->find('lid=:lid and dpid=:dpid and delete_flag=0', array(':lid' => $model->product_id, ':dpid' => $this->companyId));
     if (Yii::app()->request->isPostRequest) {
         $model->attributes = Yii::app()->request->getPost('ProductSpecial');
         $model->update_at = date('Y-m-d H:i:s', time());
         if ($model->save()) {
             Yii::app()->user->setFlash('success', yii::t('app', '修改成功'));
             $this->redirect(array('productSpecial/updatedetail', 'companyId' => $this->companyId, 'id' => $model->product_id));
         }
     }
     $this->render('update', array('model' => $model, 'product' => $product));
 }