From ca1f3c6e4c00acb387423c72becc42ad48af6f4c Mon Sep 17 00:00:00 2001
From: t0ng7u <dev@aiass.cc>
Date: Sun, 10 Aug 2025 11:03:39 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20fix(model):=20allow=20zero-value?=
 =?UTF-8?q?=20updates=20so=20tags/description=20can=20be=20cleared?=
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---
 model/model_meta.go | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/model/model_meta.go b/model/model_meta.go
index 63b6800e..371e3137 100644
--- a/model/model_meta.go
+++ b/model/model_meta.go
@@ -73,11 +73,14 @@ func IsModelNameDuplicated(id int, name string) (bool, 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()
-
-    // 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
+    // 使用 Session 配置并选择所有字段，允许零值（如空字符串）也能被更新
+    return DB.Session(&gorm.Session{AllowGlobalUpdate: false, FullSaveAssociations: false}).
+        Model(&Model{}).
+        Where("id = ?", mi.Id).
+        Omit("created_time").
+        Select("*").
+        Updates(mi).Error
 }
 
 // Delete 软删除模型记录