Ticket #12627: 12627.diff

django/forms/forms.py

@@ -6 +6 @@
 from django.utils.copycompat import deepcopy
 from django.utils.datastructures import SortedDict
 from django.utils.html import conditional_escape
+from django.utils.translation import ugettext_lazy as _
 from django.utils.encoding import StrAndUnicode, smart_unicode, force_unicode
 from django.utils.safestring import mark_safe
 
@@ -117 +118 @@
         Returns True if the form has no errors. Otherwise, False. If errors are
         being ignored, returns False.
         """
+        if not self.fields:
+            if not self._errors:
+                self._errors = ErrorDict()
+            self._errors[NON_FIELD_ERRORS] = self.error_class([_(u'No data was submitted.')])
+
         return self.is_bound and not bool(self.errors)
 
     def add_prefix(self, field_name):