From 1686e0d184aaf704e5131a8651a070c4a0e58b03 Mon Sep 17 00:00:00 2001
From: Claude Paroz <claude@2xlibre.net>
Date: Fri, 25 Jan 2013 21:27:49 +0100
Subject: [PATCH] Fixed #18460 -- Fixed change detection of
 ReadOnlyPasswordHashField

Thanks jose.sanchez et ezeep.com for the report and Vladimir Ulupov
for the initial patch.
---
 django/contrib/auth/forms.py       | 3 +++
 django/contrib/auth/tests/forms.py | 8 ++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/django/contrib/auth/forms.py b/django/contrib/auth/forms.py
index cbce8ad6e2..ee4fb482ce 100644
--- a/django/contrib/auth/forms.py
+++ b/django/contrib/auth/forms.py
@@ -57,6 +57,9 @@ class ReadOnlyPasswordHashField(forms.Field):
         # render an input field.
         return initial
 
+    def _has_changed(self, initial, data):
+        return False
+
 
 class UserCreationForm(forms.ModelForm):
     """
diff --git a/django/contrib/auth/tests/forms.py b/django/contrib/auth/tests/forms.py
index 543bb2001d..0c0973d543 100644
--- a/django/contrib/auth/tests/forms.py
+++ b/django/contrib/auth/tests/forms.py
@@ -4,7 +4,7 @@ import os
 from django.contrib.auth.models import User
 from django.contrib.auth.forms import (UserCreationForm, AuthenticationForm,
     PasswordChangeForm, SetPasswordForm, UserChangeForm, PasswordResetForm,
-    ReadOnlyPasswordHashWidget)
+    ReadOnlyPasswordHashField, ReadOnlyPasswordHashWidget)
 from django.contrib.auth.tests.utils import skipIfCustomUser
 from django.core import mail
 from django.forms.fields import Field, EmailField, CharField
@@ -384,7 +384,7 @@ class PasswordResetFormTest(TestCase):
                          [_("The user account associated with this email address cannot reset the password.")])
 
 
-class ReadOnlyPasswordHashWidgetTest(TestCase):
+class ReadOnlyPasswordHashTest(TestCase):
 
     def test_bug_19349_render_with_none_value(self):
         # Rendering the widget with value set to None
@@ -392,3 +392,7 @@ class ReadOnlyPasswordHashWidgetTest(TestCase):
         widget = ReadOnlyPasswordHashWidget()
         html = widget.render(name='password', value=None, attrs={})
         self.assertIn(_("No password set."), html)
+
+    def test_readonly_field_has_changed(self):
+        field = ReadOnlyPasswordHashField()
+        self.assertFalse(field._has_changed('aaa', 'bbb'))