Yii2数据

public function validateItems()
{
    $productIdList = $this->items['product_id'];
    $qtyList = $this->items['qty'];
    $productPriceIds = $this->items['product_price_id'];

    foreach ($productIdList as $i => $product_id)
    {
        $price = null;
        $qty = $qtyList[$i];
        $product_price_id = $productPriceIds[$i];
        if(isset($product_price_id) && isset($qty) && $qty > 0)
        {
            $product = Product::findOne($product_id);

            if(null != $product && $product->isOnline())
            {
                if($product->isAreaPrice())
                {

                    if(!isset($product_price_id))
                    {
                        var_dump(000);die;
                        $this->addError('items', '编号为'.$i.'的商品地区未选择。');
                    }
                    else
                    {
                        /** @var ProductPrice $pp */
                        $pp = ProductPrice::find()->where(['id' => $product_price_id, 'product_id' => $product_id])->one();
                        if(null != $pp)
                        {
                            $price = $pp->price;
                        }
                    }
                }
                else
                {
                    $price = $product->price;
                }
                $this->products[] = [
                    'product' => $product,
                    'qty' => (int)$qty,
                    'price' => $price
                ];
            }
            else
            {
                $this->addError('items', '编号为'.$i.'的商品信息不正确。');
            }
        }
        else
        {
            $this->addError('items', '编号为'.$i.'的商品信息不正确。');
        }
    }
}

public function save()
{
    $order = new Order();
    $this->products;

    if(!$order->save(false)) return null;
    return $order;
}

/*
 * 新增订单
 */
public function actionCreate($user_id)
{
    $user = $this->findUserModel($user_id);
    $model = new OrderForm();
    $model->user = $user;
    $model->user_id = $user_id;
    if ($model->load(Yii::$app->request->post()) && $model->validate()) {
        $order = $model->save();
        if($order){
            Yii::$app->session->setFlash('success', '订单保存成功!');
            return $this->redirect(['list']);
        }
        Yii::$app->session->setFlash('error', '保存失败。');
    }
    if ($model->hasErrors()) {
        Yii::$app->session->setFlash('error', '保存失败, 您的订单填写有误, 请检查。');
    }
    return $this->render('create', [
        'model' => $model,
        'user' => $user,
    ]);
}