Fixed #18483 -- Marked hidden field error string for translation

Thanks Evil Clay for the report and Emil Stenstrom for the initial
patch.

1 files changed, 6 insertions, 2 deletions

diff --git a/django/forms/forms.py b/django/forms/forms.py
index a33bf8a648..9c5dc3eb5c 100644
--- a/django/forms/forms.py
+++ b/django/forms/forms.py
@@ -14,6 +14,7 @@ from django.utils.datastructures import SortedDict
 from django.utils.html import conditional_escape, format_html
 from django.utils.encoding import smart_text, force_text, python_2_unicode_compatible
 from django.utils.safestring import mark_safe
+from django.utils.translation import ugettext as _
 from django.utils import six
 
 
@@ -148,10 +149,13 @@ class BaseForm(object):
         for name, field in self.fields.items():
             html_class_attr = ''
             bf = self[name]
-            bf_errors = self.error_class([conditional_escape(error) for error in bf.errors]) # Escape and cache in local variable.
+            # Escape and cache in local variable.
+            bf_errors = self.error_class([conditional_escape(error) for error in bf.errors])
             if bf.is_hidden:
                 if bf_errors:
-                    top_errors.extend(['(Hidden field %s) %s' % (name, force_text(e)) for e in bf_errors])
+                    top_errors.extend(
+                        [_('(Hidden field %(name)s) %(error)s') % {'name': name, 'error': force_text(e)}
+                         for e in bf_errors])
                 hidden_fields.append(six.text_type(bf))
             else:
                 # Create a 'class="..."' atribute if the row should have any