Ticket #2194: django-unique-together-error.diff

django/db/models/manipulators.py

@@ -300 +300 @@
         pass
     else:
         raise validators.ValidationError, _("%(object)s with this %(type)s already exists for the given %(field)s.") % \
-            {'object': capfirst(opts.verbose_name), 'type': field_list[0].verbose_name, 'field': get_text_list(field_name_list[1:], 'and')}
+            {'object': capfirst(opts.verbose_name),
+             'type': field_list[0].verbose_name,
+             'field': get_text_list([f.verbose_name for f in field_list[1:]], 'and')}
 
 def manipulator_validator_unique_for_date(from_field, date_field, opts, lookup_type, self, field_data, all_data):
     from django.db.models.fields.related import ManyToOneRel