From eb42eb6f27c40b117240b69ab34c628d23166825 Mon Sep 17 00:00:00 2001
From: t0ng7u <dev@aiass.cc>
Date: Fri, 1 Aug 2025 02:21:14 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix(model):=20preserve=20created?=
 =?UTF-8?q?=5Ftime=20on=20Model=20update=20and=20streamline=20field=20main?=
 =?UTF-8?q?tenance?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The update operation for Model previously overwrote `created_time` with zero
because GORM included every struct field in the UPDATE statement.
This commit adjusts `Model.Update()` to:

* Call `Omit("created_time")` so the creation timestamp is never modified.
* Refresh `UpdatedTime` with `common.GetTimestamp()` before persisting.
* Delegate the remainder of the struct to GORM, eliminating the need to
  maintain an explicit allow-list whenever new fields are introduced.

No API contract is changed; existing CRUD endpoints continue to work
normally while data integrity for historical records is now guaranteed.
---
 model/model_meta.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/model/model_meta.go b/model/model_meta.go
index ef5e883a..6f6c5e22 100644
--- a/model/model_meta.go
+++ b/model/model_meta.go
@@ -50,8 +50,11 @@ func (mi *Model) Insert() error {
 
 // Update 更新现有模型记录
 func (mi *Model) Update() error {
+    // 仅更新需要变更的字段，避免覆盖 CreatedTime
     mi.UpdatedTime = common.GetTimestamp()
-    return DB.Save(mi).Error
+
+    // 排除 created_time，其余字段自动更新，避免新增字段时需要维护列表
+    return DB.Model(&Model{}).Where("id = ?", mi.Id).Omit("created_time").Updates(mi).Error
 }
 
 // Delete 软删除模型记录