[1.5.x] Fixed #19114 -- Fixed LogEntry unicode representation

Thanks niko at neagee.net for the report and Emil Stenstrom for
the patch.
Backport of e0363c688 from master.

django/contrib/admin/models.py

@@ -4,7 +4,7 @@ from django.db import models
 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.admin.util import quote
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import ugettext, ugettext_lazy as _
 from django.utils.encoding import smart_text
 from django.utils.encoding import python_2_unicode_compatible
 
@@ -42,13 +42,16 @@ class LogEntry(models.Model):
 
     def __str__(self):
         if self.action_flag == ADDITION:
-            return _('Added "%(object)s".') % {'object': self.object_repr}
+            return ugettext('Added "%(object)s".') % {'object': self.object_repr}
         elif self.action_flag == CHANGE:
-            return _('Changed "%(object)s" - %(changes)s') % {'object': self.object_repr, 'changes': self.change_message}
+            return ugettext('Changed "%(object)s" - %(changes)s') % {
+                'object': self.object_repr,
+                'changes': self.change_message,
+            }
         elif self.action_flag == DELETION:
-            return _('Deleted "%(object)s."') % {'object': self.object_repr}
+            return ugettext('Deleted "%(object)s."') % {'object': self.object_repr}
 
-        return _('LogEntry Object')
+        return ugettext('LogEntry Object')
 
     def is_addition(self):
         return self.action_flag == ADDITION

tests/regressiontests/admin_util/tests.py

@@ -274,6 +274,10 @@ class UtilTests(unittest.TestCase):
             six.text_type(log_entry).startswith('Deleted ')
         )
 
+        # Make sure custom action_flags works
+        log_entry.action_flag = 4
+        self.assertEqual(six.text_type(log_entry), 'LogEntry Object')
+
     def test_safestring_in_field_label(self):
         # safestring should not be escaped
         class MyForm(forms.Form):