I am looking to sort the related objects that show up when editing an object using the admin form. So for example, I would like to take the following object:

class Person(models.Model):
    first_name = models.CharField( ... )
    last_name = models.CharField( ... )
    hero = models.ForeignKey( 'self', null=True, blank=True )

and edit the first name, last name and hero using the admin interface. I want to sort the objects as they show up in the drop down by last name, first name (ascending). How do I do that?

Context

• I'm using Django v1.1.
• I started by looking for help in the django admin docs, but didn't find the solution
• As you can see in the example, the foreign key is pointing to itself, but I expect it would be the same as pointing to a different model object.
• Bonus points for being able to filter the related objects, too (eg~ only allow selecting a hero with the same first name)