f

app/main/api/internal/logic/pay/paymentlogic.go

@@ -53,6 +53,27 @@ func (l *PaymentLogic) Payment(req *types.PaymentReq) (resp *types.PaymentResp,
 	isDevTestPayment := env == "development" && (req.PayMethod == "test" || req.PayMethod == "test_empty")
 	isEmptyReportMode := env == "development" && req.PayMethod == "test_empty"
 
+	// 微信小程序：若未绑定 openid 但前端传了 code，则用 code 换取 openid 并写入 user_auth，以便 CreateWechatOrder 能拿到 openid 并返回 prepay_data
+	if req.PayMethod == "wechat" && req.Code != "" {
+		platformVal := l.ctx.Value("platform")
+		platform, _ := platformVal.(string)
+		if platform == model.PlatformWxMini {
+			userID, getUidErr := ctxdata.GetUidFromCtx(l.ctx)
+			if getUidErr == nil {
+				_, findErr := l.svcCtx.UserAuthModel.FindOneByUserIdAuthType(l.ctx, userID, model.UserAuthTypeWxMiniOpenID)
+				if findErr != nil {
+					openid, codeErr := l.svcCtx.VerificationService.GetWechatMiniOpenID(l.ctx, req.Code)
+					if codeErr == nil {
+						ua := &model.UserAuth{Id: uuid.NewString(), UserId: userID, AuthType: model.UserAuthTypeWxMiniOpenID, AuthKey: openid}
+						if _, insertErr := l.svcCtx.UserAuthModel.Insert(l.ctx, nil, ua); insertErr != nil {
+							logx.Infof("支付前绑定 openid 写入失败(可忽略): %v", insertErr)
+						}
+					}
+				}
+			}
+		}
+	}
+
 	l.svcCtx.OrderModel.Trans(l.ctx, func(ctx context.Context, session sqlx.Session) error {
 		switch req.PayType {
 		case "agent_vip":