Can I have a Django model that has a foreign key reference to itself?

DjangoDjango Models

Django Problem Overview

Okay, how would I do this?

class Example(models.Model):
  parent_example = models.ForeignKey(Example)

I want to have a model have a foreign key reference to itself. When I try to create this I get a django validation error that Example is not yet defined.

Django Solutions

Solution 1 - Django

You should use

models.ForeignKey('self')

as mentioned here.

Solution 2 - Django

Yes, just do this:

class Example(models.Model):
  parent_example = models.ForeignKey('self')

Solution 3 - Django

You can do this using quotes too:

class Example(models.Model):
    parent_example = models.ForeignKey('Example')
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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionMikeNView Question on Stackoverflow
Solution 1 - DjangoohnoesView Answer on Stackoverflow
Solution 2 - DjangoJoe HollowayView Answer on Stackoverflow
Solution 3 - DjangoUmut Çağdaş CoşkunView Answer on Stackoverflow