付款校验 同一订单不能添加多个特价商品

app/Controller/PaymentController.php

@@ -3,14 +3,23 @@
 namespace App\Controller;
 
 use App\Constants\ErrorCode;
+use App\Model\Order;
+use App\Model\OrderGoods;
 use App\Model\OrderMain;
 use App\Request\WxminiPayRequest;
 
+use App\Service\PurchaseLimitServiceInterface;
 use EasyWeChat\Factory;
+use Hyperf\DbConnection\Db;
 use Hyperf\Guzzle\CoroutineHandler;
 
 class PaymentController extends BaseController
 {
+    /**
+     * @Inject
+     * @var PurchaseLimitServiceInterface
+     */
+    protected $purchaseLimitService;
 
     public function wxminiPayOnline(WxminiPayRequest $request){
 
@@ -30,6 +39,22 @@ class PaymentController extends BaseController
             return $this->result(ErrorCode::PAY_FAILURE, $data,'订单不存在或已失效');
         }
 
+        //查询订单商品信息
+        $order = Order::query()
+            ->where('order_main_id',$data['order_id'])
+            ->select('id')
+            ->get()
+            ->toArray();
+        $orderGoods = OrderGoods::query()
+            ->whereIn('order_id',$order)
+            ->get();
+        //判断是否有购买多个特价商品
+        $result = $this->purchaseLimitService->PurchaseLimit($orderGoods);
+        if(!$result){
+            Db::rollBack();
+            return '同一个订单不能购买多个特价商品';
+        }
+
         $result = $app->order->unify([
             'body' => '懒族生活 - 外卖下单',
             'out_trade_no' => $orderMain->global_order_id,