How to handle 'self' Foreign key relation in factory boy

Hello,

I’ve a django model where i’m using Foreign key with itself. Can you please guide me how i can replicate self relation in factory boy class. e.g.

class A(models.Model):
    name = models.CharField(max_length=255)
    parent = models.ForeignKey('self', blank=True, null=True)

Please guide how i can create a factory for such type of relations.

Thanks.

[Kub-AT]

class AFactory(factory.Factory):
    class Meta:
        model = models.A
    name =  factory.Sequence(lambda n: "a%d" % n)
    parent = factory.LazyAttribute(lambda x: AFactory(parent=None))

[rbarrois]

Well, the simplest way would be to define a self-referential factory:

# myproj/myapp/factories.py
class AFactory(factory.Factory):
    class Meta:
        model = models.A
    name =  factory.Sequence(lambda n: "a%d" % n)
    parent = factory.SubFactory('myproj.myapp.factories.AFactory')

Then, you’ll just have to define the target depth when calling:

a = AFactory(parent__parent__parent__parent=None)

I’ve added a test on that topic, too.