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djangodjango-modelsdjango-orm

In Django, how do you make a model refer to itself?

Assume we have class Employee. I want to have a field which references a different instance of the same class.

How to write this? How about the following code?

ref_employee= models.ForeignKey('self',null=True,blank=True)
Solution

  • http://docs.djangoproject.com/en/dev/ref/models/fields/#foreignkey

    To create a recursive relationship -- an object that has a many-to-one relationship with itself -- use models.ForeignKey('self').

    So you have it right. It's usually faster to determine if code will do what you want by running it :)