如何在数据迁移期间创建对象?

时间:2013-10-07 09:45:31

标签: django django-south data-migration

我正在尝试在数据迁移期间创建新对象。据我所知,我应该使用orm.Object()来创建新对象,但这似乎不起作用:

def forwards(self, orm):
    for o in orm['app.Objects'].objects.all():
        ...
        n = orm.NewObject()
        n.date = datetime.date.today()
        n.object = o
        n.save()

我收到错误

AttributeError: 'NoneType' object has no attribute 'date'

当我运行迁移时,建议未正确创建n。我做错了什么?

1 个答案:

答案 0 :(得分:1)

我通常将它们创建为:

def forwards(self, orm):
    for obj in orm['my_app.ModelName'].objects.all():
        orm.SomeOtherModel.objects.create(some_property=obj.some_property)