Fixed #3082 -- newforms: Changed Form as_table() and as_ul() not to display verbose names for hidden fields, and to add field-name prefix to error messages to avoid user confusion. Also added unit tests.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@4146 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/newforms/widgets.py

@@ -23,6 +23,8 @@ flatatt = lambda attrs: u''.join([u' %s="%s"' % (k, escape(v)) for k, v in attrs
 
 class Widget(object):
     requires_data_list = False # Determines whether render()'s 'value' argument should be a list.
+    is_hidden = False          # Determines whether this corresponds to an <input type="hidden">.
+
     def __init__(self, attrs=None):
         self.attrs = attrs or {}
 
@@ -76,6 +78,7 @@ class PasswordInput(Input):
 
 class HiddenInput(Input):
     input_type = 'hidden'
+    is_hidden = True
 
 class FileInput(Input):
     input_type = 'file'