What value do I use for _ptr when migrating reparented classes with South?

Question

I have two classes, one of which is descended from the other, and I would like to make them both sibling classes descended from the same base class.

Before:

Answer 1

If base will not be instantiated on its own, you can easily solve the problem using abstract = True prop to class Meta.

Example code:

from django.db import models

class Base(models.Model):
    name = models.CharField(max_length=10)
    class Meta:
        abstract = True

class A(Base):
    pass

class B(Base):
    title = models.CharField(max_length=10)