I want to have a model with 2 fields, children and parent. How do I do this in django? I have something like this
from django.db import models
parent = models.ForeignKey('self', blank=True, null=True)
children = models.ManyToOneRel('self', blank=True, null=True)
def __init__(self, *args, **kwargs):
super(FooModel, self).__init__(*args, **kwargs)
ManyToOneRel is an internal implementation class, it's not for use in your models.
But why do you think you need it anyway? As the documentation explains in detail, when you define a ForeignKey, you automatically get a reverse relation. So in your case, if you define
parent then you automatically get
self.foomodel_set already: and you can make it even more explicit by using the
parent = models.ForeignKey('self', blank=True, null=True, related_name='children')
Note that if you're planning on doing complicated things with trees, you probably want to be using the django-mptt library.