完善

app/admin/controller/order/WholeController.php

@@ -2131,6 +2131,9 @@ class WholeController extends Curd
         if (!$sheet){
             return json_fail("参数异常");
         }
+        if (OrderSheet::where('join_sheet_order_id',$sheet->join_sheet_order_id)->count() <= 1){
+            return json_fail("不能清空菜单");
+        }
         Db::beginTransaction();
         try{
             $order = Order::where('order_id',$sheet->join_sheet_order_id)->first();