From d3c4715258fa625f63bc9398215fd68f64f71cb0 Mon Sep 17 00:00:00 2001
From: wucongxing8150 <815046773@qq.com>
Date: Thu, 5 Sep 2024 13:29:37 +0800
Subject: [PATCH] 1

---
 api/service/OrderSingle.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/api/service/OrderSingle.go b/api/service/OrderSingle.go
index 342b149..22494cf 100644
--- a/api/service/OrderSingle.go
+++ b/api/service/OrderSingle.go
@@ -131,6 +131,9 @@ func (r *OrderSingleService) AddOrderSingle(tx *gorm.DB, UserId, QuestionId int6
 
 		// 实际付款金额
 		paymentAmountTotal = amountTotal - couponAmountTotal
+		if paymentAmountTotal < 0 {
+			paymentAmountTotal = 0
+		}
 		if *orderPrice != paymentAmountTotal {
 			return nil, errors.New("价格异常")
 		}