diff --git a/backend/system/management/commands/gen_menu_json.py b/backend/system/management/commands/gen_menu_json.py
index 634b911..bde3b36 100644
--- a/backend/system/management/commands/gen_menu_json.py
+++ b/backend/system/management/commands/gen_menu_json.py
@@ -1,8 +1,9 @@
-import json
 from datetime import datetime
 from django.core.management.base import BaseCommand
 from system.models import Menu, MenuMeta
-import re
+
+from utils.string_utils import camel_to_snake
+
 """
 自动生成 菜单 代码的 Django 管理命令
 使用方法: python manage.py gen_menu_json <app> <model> <parent>
@@ -11,10 +12,6 @@ system 是 app 名称, Config 是 model 名称, System 是上级菜单名称
 """
 
 # gen_menu_json --app system --model Config --parent 系统管理
-def camel_to_snake(name):
-    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)
-    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()
-
 def gen_menu(app_name, model_name, parent_menu_name, creator='admin'):
     print(parent_menu_name, 'parent')
     now = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
diff --git a/backend/system/management/commands/generate_crud.py b/backend/system/management/commands/generate_crud.py
index 10131d5..409be34 100644
--- a/backend/system/management/commands/generate_crud.py
+++ b/backend/system/management/commands/generate_crud.py
@@ -8,12 +8,12 @@
 """
 
 import os
-import re
 from string import Template
 from django.core.management.base import BaseCommand, CommandError
 from django.apps import apps
 from django.db import models
-from django.conf import settings
+
+from utils.string_utils import camel_to_snake
 
 TPL_DIR = os.path.join(os.path.dirname(__file__), 'tpl')
 
@@ -23,9 +23,6 @@ def render_tpl(tpl_name, context):
         tpl = Template(f.read())
     return tpl.substitute(context)
 
-def camel_to_snake(name):
-    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)
-    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()
 
 def ensure_view_dirs(app_name, model_name_snake):
     base_dir = f'../web/apps/web-antd/src/views/{app_name.lower()}'
diff --git a/backend/system/tasks.py b/backend/system/tasks.py
index a4daed9..261372d 100644
--- a/backend/system/tasks.py
+++ b/backend/system/tasks.py
@@ -20,7 +20,8 @@ def update_user_login_info(user_id, client_ip, user_agent):
     user.save(update_fields=['login_ip', 'last_login'])
 
     # 获取地理位置信息
-    location_info = get_location_from_ip(client_ip)
+    # location_info = get_location_from_ip(client_ip)
+    location_info = None
 
     # 记录登录日录
     LoginLog.objects.create(
diff --git a/backend/utils/permissions.py b/backend/utils/permissions.py
index 8f6ab38..9eafe88 100644
--- a/backend/utils/permissions.py
+++ b/backend/utils/permissions.py
@@ -1,6 +1,8 @@
 from rest_framework import permissions
 from rest_framework.permissions import BasePermission
 from system.models import Menu
+from utils.string_utils import camel_to_snake
+
 
 class IsSuperUserOrReadOnly(BasePermission):
     """超级用户可读写，普通用户只读"""
@@ -21,7 +23,7 @@ class HasButtonPermission(BasePermission):
         if not required_code:
             # 可自动推断权限编码逻辑
             app_label = view.queryset.model._meta.app_label
-            model_name = view.queryset.model._meta.model_name
+            model_name = camel_to_snake(view.queryset.model._meta.model_name)
             action = getattr(view, 'action', None)
             action_map = {
                 'create': 'create',
diff --git a/backend/utils/string_utils.py b/backend/utils/string_utils.py
new file mode 100644
index 0000000..5b491d4
--- /dev/null
+++ b/backend/utils/string_utils.py
@@ -0,0 +1,5 @@
+import re
+
+def camel_to_snake(name):
+    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)
+    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()