Django 1.7重构为模型继承

Question

看看这些：

South migration for multi-table inheritance

和

Using south to refactor a Django model with inheritance

两者均基于已弃用的南方＆＃39;应用。有没有人尝试成功使用django 1.7+迁移来重构模型以获得继承？

EG。从：

class OrderItem(TimeStampedMixin, models.Model):
    ...

要：

class BaseOrderItem(models.Model):
    pass

class OrderItem(TimeStampedMixin, BaseOrderItem):
    ...

当我运行makemigration orders时，魔法并没有回填基础模型：

You are trying to add a non-nullable field 'baseorderitem_ptr' to orderitem without a default; we can't do that (the database needs something to populate existing rows).
Please select a fix:
 1) Provide a one-off default now (will be set on all existing rows)
 2) Quit, and let me add a default in models.py

这似乎是一项要完成的任务。