我正在尝试为带有 GFK 的模型编写一个工厂进行测试,但我似乎无法让它工作。我参考了文档中的常见配方,但我的模型不完全匹配,而且我也遇到了错误。这是我的模型
class Artwork(models.Model):
...
region = models.ForeignKey("Region", on_delete=models.SET_NULL, null=True, blank=True)
class Region(models.Model):
# Could be either BeaconRegion or SpaceRegion
region_content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
region_object_id = models.PositiveIntegerField()
region = GenericForeignKey("region_content_type", "region_object_id")
class SpaceRegion(models.Model):
label = models.CharField(max_length=255)
regions = GenericRelation(
Region,
content_type_field="region_content_type",
object_id_field="region_object_id",
related_query_name="space_region",
)
class BeaconRegion(models.Model):
label = models.CharField(max_length=255)
regions = GenericRelation(
Region,
content_type_field="region_content_type",
object_id_field="region_object_id",
related_query_name="beacon_region",
)
本质上, anArtwork
可以放在两个Region
s 之一中;一个SpaceRegion
或BeaconRegion
。
我Factory
为相应的模型创建了以下
class RegionFactory(factory.django.DjangoModelFactory):
region_object_id = factory.SelfAttribute("region.id")
region_content_type = factory.LazyAttribute(
lambda o: ContentType.objects.get_for_model(o.region)
)
class Meta:
exclude = ["region"]
abstract = True
class BeaconRegionFactory(RegionFactory):
label = factory.Faker("sentence", nb_words=2)
region = factory.SubFactory(RegionFactory)
class Meta:
model = Region
class SpaceRegionFactory(RegionFactory):
label = factory.Faker("sentence", nb_words=2)
region = factory.SubFactory(RegionFactory)
class Meta:
model = Region
class ArtworkFactory(factory.django.DjangoModelFactory):
...
region = factory.SubFactory(SpaceRegionFactory)
在我的测试中,我尝试使用创建艺术品ArtworkFactory()
,但它与
AttributeError: The parameter 'region' is unknown. Evaluated attributes are {}, definitions are <DeclarationSet: {'region_object_id': <SelfAttribute('region.id', default=<class 'factory.declarations._UNSPECIFIED'>)>, 'region_content_type': <factory.declarations.LazyAttribute object at 0x1068cf430>, 'label': <factory.faker.Faker object at 0x1068cf880>}>
我在这里做错了什么?