Fixed #14242 - UserChangeForm subclasses without 'user_permissions' field causes KeyError

This was a regression introduced by [13683]

Thanks to adammckerlie@gmail.com for report.



git-svn-id: http://code.djangoproject.com/svn/django/trunk@13702 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/auth/forms.py

@@ -54,7 +54,9 @@ class UserChangeForm(forms.ModelForm):
 
     def __init__(self, *args, **kwargs):
         super(UserChangeForm, self).__init__(*args, **kwargs)
-        self.fields['user_permissions'].queryset = self.fields['user_permissions'].queryset.select_related('content_type')
+        f = self.fields.get('user_permissions', None)
+        if f is not None:
+            f.queryset = f.queryset.select_related('content_type')
 
 class AuthenticationForm(forms.Form):
     """

django/contrib/auth/tests/forms.py

@@ -199,6 +199,22 @@ class UserChangeFormTest(TestCase):
         self.assertEqual(form['username'].errors,
                          [u'This value may contain only letters, numbers and @/./+/-/_ characters.'])
 
+    def test_bug_14242(self):
+        # A regression test, introduce by adding an optimization for the
+        # UserChangeForm.
+
+        class MyUserForm(UserChangeForm):
+            def __init__(self, *args, **kwargs):
+                super(MyUserForm, self).__init__(*args, **kwargs)
+                self.fields['groups'].help_text = 'These groups give users different permissions'
+
+            class Meta(UserChangeForm.Meta):
+                fields = ('groups',)
+
+        # Just check we can create it
+        form = MyUserForm({})
+
+
 class PasswordResetFormTest(TestCase):
 
     fixtures = ['authtestdata.json']