Django在使用相关对象管理器的create方法时，如何分配外键？

Question

当使用相关对象管理器的create方法时，Django如何分配外键？我之所以问是因为当我创建自己的create方法时，外键不会自动设置。这里有一个例子：

class ModelAQuerySet(models.QuerySet):
    def create(self, **kwargs):
        print('create:')
        print(kwargs)
        return super().create(**kwargs)

    def create_with_other_options(self, **kwargs):
        print('create_with_other_options:')
        print(kwargs)
        return self.create(**kwargs)

class ModelABaseManager(models.Manager):
    use_for_related_fields = True    

ModelAManager = ModelABaseManager.from_queryset(ModelAQuerySet)

class ModelA(models.Model):
    objects = ModelAManager()
    user = models.ForeignKey('User', related_name='modela_set')

当我使用以下方法时：

>>> u = User.object.get(...)
>>> a1 = u.modela_set.create() # it works, user is set automatically
create:
{..., 'user': <User: id:1 email:"...">}

>>> a2 = u.modela_set.create_with_other_options() # it does not work, user is not set automatically
create_with_other_options:
{}
IntegrityError: null value in column "user_id" violates not-null constraint

- Michael

Answer 1

在你的第五行尝试使用这个：

return super(ModelAQuery, self).create(**kwargs)

- Eric Acevedo