CircularDependencyError by inherting FK from Abstract Class - django

Question

I have the following abstract class:
class UserStamp(models.Model):
created_by = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True,
related_name='%(app_label)s_%(class)s_created_by', on_delete=models.CASCADE)
updated_by = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True,
related_name='%(app_label)s_%(class)s_updated_by', on_delete=models.CASCADE)
class Meta:
abstract = True
The Account Model inherits from it:
class Account(UserStamp):
pass
And I have a User Model with a FK to
class User(AbstractBaseUser,PermissionsMixin, UserStamp):
account = models.ForeignKey(Account, blank=True, null=True, related_name='owner',on_delete=models.CASCADE)
I have the following error when I migrate:
django.db.migrations.exceptions.CircularDependencyError:
The circular error I think appears because:
Account is calling User by inheriting created_by, updated_by from UserStamp, so points to User, and User points with Account FK back to Account.
If I use:
account = models.ForeignKey('accounts.Account', blank=True, null=True, related_name='owner',on_delete=models.CASCADE)
the issues is not solved.
My problem has (2 issues), but I decided to split the initial question in 2 questions to be more clear(I think they can be solved separately):
Second part here (how to set created_by, updated_by)

Answer 1

You can set a default user by modifying the save() method of your model:
class UserStamp(models.Model):
created_by = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True,
...
def save(self, *args, **kwargs):
if not self.created_by:
super_users = settings.AUTH_USER_MODEL.objects.filter(
is_superuser=True).order_by('date_joined')
first_user = super_users[0]
self.created_by = first_user
super().save(*args, **kwargs)
But I don't think that's what's causing your migration error. You may want to try a OneToOneField