默认购买商品数量

app/controller/api/store/order/StoreOrder.php

@@ -69,6 +69,16 @@ class StoreOrder extends BaseController
     public function checkOrder(StoreCartRepository $cartRepository)
     {
         $cartId = (array)$this->request->param('cart_id', []);
+
+
+        //在提交订单之前会产出购物车cartid，其中会产生购买的数量，现在默认会员专区是只让购买一个商品，需要修改值为1
+        $product_mer_datas=Db::name('store_cart')->where('cart_id',input('cart_id'))->find();
+
+        if($product_mer_datas['cart_num'] > 1){
+            return app('json')->fail('默认购买数量为一个，请修改购买数量!');
+        }
+
+
         $addressId = (int)$this->request->param('address_id');
         $psType = $this->request->param('type',true);//是否需要地址 boolean
         $uid = $this->request->uid();