Factory Boy SelfAttribute 没有返回我所期望的

如何解决Factory Boy SelfAttribute 没有返回我所期望的

我有以下模型，我正在尝试复制测试中的功能：

class Client(TimeStampedModel):
    user = models.OnetoOneField(User,related_name="client",on_delete=models.CASCADE)
    business_name = models.CharField(_("business name"),max_length=255,blank=True)
    business_phone = PhoneNumberField(_("business phone"),blank=True,null=True)
    business_address = models.CharField(
        _("business address"),blank=True
    )
    business_city = models.CharField(_("business city"),blank=True)
    business_state = UsstateField(_("business state"),blank=True)
    business_zip = USZipCodeField(_("business zip"),blank=True)
    business_url = models.URLField(_("business website"),blank=True)

    @property
    def email(self):
        return self.user.email

    def __str__(self):
        return f"{self.business_name}"

导致问题的是电子邮件属性。它应该返回用户的电子邮件地址。使用 DjangoModelFactory，我使用以下两个工厂创建用户和客户端：

class UserFactory(DjangoModelFactory):
    class Meta:
        model = get_user_model()
        django_get_or_create = ["username"]

    username = Faker("user_name")
    email = Faker("email")
    phone_number = Faker("phone_number")
    first_name = Faker("first_name")
    last_name = Faker("last_name")
    city = Faker("city")
    state = Faker("state_abbr")
    zip = Faker("zipcode_plus4")

    # these are overrideable
    password = "fakePassword"
    is_staff = False

    @classmethod
    def _create(cls,model_class,*args,**kwargs):
        """Override ``_create``"""
        kwargs["password"] = make_password(kwargs["password"])
        kwargs["is_staff"] = kwargs["is_staff"]
        return super(UserFactory,cls)._create(model_class,**kwargs)



class ClientFactory(DjangoModelFactory):
    class Meta:
        model = Client

    user = factory.SubFactory(
        UserFactory,)
    business_name = Faker("company")
    business_address = Faker("street_address")
    business_city = Faker("city")
    business_state = Faker("state_abbr")
    business_zip = Faker("postalcode")
    email = factory.SelfAttribute("user.email")

我在运行测试时不断收到错误 Invalid field name(s) for model Client: 'email'.。我也尝试将它作为一个惰性属性来处理，但我得到了同样的错误。我在这里做错了什么？