Filtering Django Admin by Null/Is Not Null

Question

I have a simple Django model like:

class Person(models.Model):
    referrer = models.ForeignKey(\'self\', null=True)
    ...

In this model\

Answer 1

There has been a ticket bouncing around for this for 4 years (https://code.djangoproject.com/ticket/5833). It missed the 1.3 milestone, but has reached new feature status and presumably has found it's way into trunk. If you don't mind running off of trunk, you can use it now. The patch is supposedly 1.3 compatible, though, so you can probably get by with just patching your currently installation.