购物车商品总数返回值修改

@@ -54,7 +54,8 @@ class Cart extends Api
         })
      */        
     public function getCartNum(){
-        $this->success(__('成功'),$this->model->where(['user_id'=>$this->auth->id,'isbuynow'=>'0'])->sum('goods_num'));
+        $total_num = $this->model->where(['user_id'=>$this->auth->id,'isbuynow'=>'0'])->sum('goods_num');
+        $this->success(__('成功'),compact('total_num'));
     }
 
     /**