fix: 修复获取 city 时可能的报错 (#8294)

Co-authored-by: ibuler <ibuler@qq.com>

apps/common/utils/ip/ipip/utils.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 #
 import os
-from django.utils.translation import ugettext as _
 
 import ipdb
 
@@ -11,13 +10,13 @@ ipip_db = None
 
 def get_ip_city_by_ipip(ip):
     global ipip_db
-    if not ip or not isinstance(ip, str):
-        return _("Invalid ip")
-    if ':' in ip:
-        return 'IPv6'
     if ipip_db is None:
         ipip_db_path = os.path.join(os.path.dirname(__file__), 'ipipfree.ipdb')
         ipip_db = ipdb.City(ipip_db_path)
-
-    info = ipip_db.find_info(ip, 'CN')
+    try:
+        info = ipip_db.find_info(ip, 'CN')
+    except ValueError:
+        return None
+    if not info:
+        raise None
     return {'city': info.city_name, 'country': info.country_name}