https://chriskief.com/2013/11/06/conditional-output-of-a-django-block/

This class used when a column is an model function, wrap function as a fake field to display in select columns.

Delegates the filter to the default filter and ors the results of each Lists the distinct values of each field as a checkbox Uses the defaul

This class is a wrapper to a given widget to add the add icon for the admin interface.

The User object may not be auth.User, so we need to provide a mechanism for issuing the equivalent of a .filter(user__username=...) search in

A custom authentication form used in the admin app.

A ImageField Widget that shows its current value if it has one.

A SplitDateTime Widget that has some admin-specific styling.

Base Admin view, support some comm attrs.