修复添加优惠券问题

AdminController/ServeManagementController.py

@@ -759,7 +759,8 @@ class serveManagement(View):
                 CouponConfigModel.objects.filter(id=coupon_id).update(**coupon_data)
                 CouponCombo.objects.filter(coupon_id=coupon_id).update(combo_id=combo_id, update_time=now_time)
             else:
-                CouponConfigModel.objects.create(**coupon_data)
+                coupon = CouponConfigModel.objects.create(**coupon_data)
+                coupon_id = coupon.id
                 # 关联套餐
                 CouponCombo.objects.create(coupon_id=coupon_id, combo_id=combo_id,
                                            create_time=now_time, update_time=now_time)