python - Django FactoryBoy : fill modelfield with choices throws error

Question

我正在一家模型工厂工作，我正在尝试填写一个包含选项列表的字段。当我试图用工厂创建一个对象时，我试图从选择列表中随机填充一个选择，抛出一个异常:

TypeError: 'choice' is an invalid keyword argument for this function

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/factory/base.py", line 551, in build
    return cls._generate(enums.BUILD_STRATEGY, kwargs)
  File "/usr/local/lib/python2.7/dist-packages/factory/base.py", line 505, in _generate
    return step.build()
  File "/usr/local/lib/python2.7/dist-packages/factory/builder.py", line 279, in build
    kwargs=kwargs,
  File "/usr/local/lib/python2.7/dist-packages/factory/base.py", line 312, in instantiate
    return self.factory._build(model, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/factory/base.py", line 531, in _build
    return model_class(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 571, in __init__
    raise TypeError("'%s' is an invalid keyword argument for this function" % list(kwargs)[0])
TypeError: 'choice' is an invalid keyword argument for this function

使用的版本:

django==1.11
factory-boy==2.9.2
python==2.7.12

(裁剪)模型:

class Server(models.Model):

    TEST = 'test'
    ACCEPT = 'accept'

    SERVER_TYPES = (
        (TEST, _("Testing Server")),
        (ACCEPT, _("Acceptation Server"))
    )

    type = models.CharField(_("Server type"), max_length=50, choices=SERVER_TYPES)

(裁剪)工厂:

class ServerFactory(factory.DjangoModelFactory):

    type = factory.Faker('random_element', elements=[choice[0] for choice in Server.SERVER_TYPES)

    class Meta:
        model = Server

我还尝试使用 LazyFunction 而不是使用 Faker('random_element, elements=[..]):

def get_server_type():
    choices = [choice[0] for choice in Server.SERVER_TYPES]
    return random.choice(choices)

class ServerFactory(factory.DjangoModelFactory):

    organization = factory.SubFactory(OrganizationFactory)
    type = factory.LazyFunction(get_server_type)

    .. Meta ..

这也会引发相同的错误。我也找不到任何真正的其他替代方法来解决这个问题。关于如何在使用 factory 包时使用 SERVER_TYPES 选择之一填充 type 字段的任何建议？

Answer 1

你能试试这个吗？

from random import choice
type = factory.LazyAttribute(lambda x: choice(Server.SERVER_TYPES)[0])

基于问题初始描述的旧评论:

应该是 type = factory.Faker('random_element', elements=[choice[0] for choice in Server.SERVER_TYPES])