'Return a list of choices for use in a form object.  Each choice is a
tuple (name, description).'

def get_action_choices(self, request, default_choices=BLANK_CHOICE_DASH):

    choices = ([] + default_choices)
    for (func, name, description) in self.get_actions(request).itervalues():
        choice = (name, (description % model_format_dict(self.opts)))
        choices.append(choice)
    return choices
