Added the missing form option to the ModelAdmin options section. Also added a...

    date_hierarchy = 'pub_date'

``form``

~~~~~~~~

The default ``forms.ModelForm`` class used to generate the form on the

add/change pages for models. You can easily change this to your own

``ModelForm`` to override the default form behavior of the add/change pages.

``fieldsets``

~~~~~~~~~~~~~

.. _regular media definitions on forms: ../forms/#media

Adding custom validation to the admin

-------------------------------------

Adding custom validation of data in the admin is quite easy. The automatic

admin interfaces reuses the Django `forms`_ module. The ``ModelAdmin`` class

gives you the ability define your own form::

    class ArticleAdmin(admin.ModelAdmin):

        form = MyArticleAdminForm

``MyArticleAdminForm`` can be defined anywhere as long as you import where

needed. Now within your form you can add your own custom validation for

any field::

    class MyArticleAdminForm(forms.ModelForm):

        def clean_name(self):

            # do something that validates your data

            return self.cleaned_data["name"]

It is important you use a ``ModelForm`` here otherwise things can break. See

the `forms`_ documentation on `custom validation`_ for more information.

.. _forms: ../forms/

.. _custom validation: ../forms/#custom-form-and-field-validation

``InlineModelAdmin`` objects

============================