django - 调试 Django 权限错字

Question

如何调试 django 中的权限问题？

我使用这样的代码:

if request.user.has_perm('foo.bar'):

我怎么知道“foo.bar”中是否有拼写错误？

Answer 1

我找到了答案。只需修改(临时)backends.py 的代码:

--- django/contrib/auth/backends.py (Revision 17045)
+++ django/contrib/auth/backends.py (Arbeitskopie)
@@ -43,6 +43,9 @@
         return user_obj._perm_cache

     def has_perm(self, user_obj, perm):
+        all_perms=[u'%s.%s' % (ct, name) for ct, name in Permission.objects.values_list('content_type__app_label', 'codename')]
+        if not perm in all_perms:
+            raise Exception('Permission %s does not exist. foo permissions: %s' % (perm, [p for p in all_perms if 'foo' in p]))
         if not user_obj.is_active:
             return False
         return perm in self.get_all_permissions(user_obj)