如何为Factory Boy指定数据库？

Question

FactoryBoy 似乎总是会在默认的数据库中创建实例。但是我遇到了以下问题。

cpses = CanonPerson.objects.filter(persons__vpd=6,
                                   persons__country="United States").using("global")

这段代码指向了 global 数据库。我还没有找到在工厂中指定数据库的方法：

class CanonPersonFactory(django_factory.DjangoModelFactory):
    class Meta:
        model = CanonPerson
        django_get_or_create = ('name_first', 'p_id')
    p_id = 1
    name_first = factory.Sequence(lambda n: "name_first #%s" % n)

    @factory.post_generation
    def persons(self, create, extracted, **kwargs):
        if not create:
            # Simple build, do nothing.
            return

        if extracted:
            # A list of groups were passed in, use them
            for person in extracted:
                self.persons.add(person)

Answer 1

现在可以通过在 Meta 中添加 database 属性来直接支持这个功能：

class CanonPersonFactory(django_factory.DjangoModelFactory):
    class Meta:
        model = CanonPerson
        database = 'global'

    ...

Answer 2

看起来 Factory Boy 这个工具默认不提供这个功能，不过你可以很简单地手动添加上去：

class CanonPersonFactory(django_factory.DjangoModelFactory):
    class Meta:
        model = CanonPerson
    ...
    @classmethod
    def _get_manager(cls, model_class):
        manager = super(CanonPersonFactory, cls)._get_manager(model_class)
        return manager.using('global')
    ...