Django 可以自动创建相关的一对一模型吗? [英] Can Django automatically create a related one-to-one model?

问题描述

我在不同的应用中有两个模型:ModelA 和 ModelB.他们是一对一的关系.当ModelA被保存时，django有没有办法自动创建和保存ModelB?

I have two models in different apps: ModelA and ModelB. They have a one-to-one relationship. Is there a way django can automatically create and save ModelB when ModelA is saved?

class ModelA(models.Model):
    name = models.CharField(max_length=30)

class ModelB(models.Model):
    thing = models.OneToOneField(ModelA, primary_key=True)
    num_widgets = IntegerField(default=0)

当我保存新的 ModelA 时，我希望它的条目自动保存在 ModelB 中.我怎样才能做到这一点?有没有办法在 ModelA 中指定它?或者这是不可能的，我只需要在视图中创建和保存 ModelB ?

When I save a new ModelA I want a entry for it to be saved automatically in ModelB. How can I do this? Is there a way to specify that in ModelA? Or is this not possible, and I would just need to create and save ModelB in the view?

编辑说模型在不同的应用程序中.

Edited to say the models are in different apps.

推荐答案

查看 django-annoying.来自文档:

Take a look at the AutoOneToOneField in django-annoying. From the docs:

from annoying.fields import AutoOneToOneField

class MyProfile(models.Model):
    user = AutoOneToOneField(User, primary_key=True)
    home_page = models.URLField(max_length=255)
    icq = models.CharField(max_length=255)

(django-annoying 是一个很棒的小库，其中包含诸如 render_to 装饰器 和 get_object_or_None 和 get_config 函数之类的宝石)

(django-annoying is a great little library that includes gems like the render_to decorator and the get_object_or_None and get_config functions)

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