django rest extensions drf extensions TypeError at/data/register（）获取了意外的关键字参数'；家长查询查找'；

我正在尝试使用drf扩展设置一个简单的嵌套路由，但遇到以下问题，我遇到以下错误： 输入/数据时出现类型错误/ register（）获得意外的关键字参数“parents\u query\u lookups”

正在尝试实现/data/Survey//Version//Product// 每个调查都有多个版本，这些版本将包含多个产品，例如/data/survey/survey1_name/version/survey1_version1/product/survey1_version_product1/

但目前我有未嵌套的端点

/数据/调查/

/数据/版本/

/数据/产品/

models.py

class Survey(models.Model):
  survey = models.CharField(choices=SURVEYS, max_length=100)


class Version(models.Model):
  version = models.CharField(choices=DATA_RELEASES, max_length=50)
  survey = models.ForeignKey(Survey)


class Product(models.Model):
  product = models.CharField(choices=PRODUCTS, max_length=100)
  version = models.ForeignKey(Version)

views.py

class SurveyViewSet(NestedViewSetMixin, viewsets.ModelViewSet):
  queryset = Survey.objects.all()
  serializer_class = SurveySerializer
  permission_classes = [permissions.AllowAny]

class VersionViewSet(NestedViewSetMixin, viewsets.ModelViewSet):
  queryset = Version.objects.all()
  serializer_class = VersionSerializer
  permission_classes = [permissions.AllowAny]

class ProductViewSet(NestedViewSetMixin, viewsets.ModelViewSet):
  queryset = Product.objects.all()
  serializer_class = ProductSerializer
  permission_classes = [permissions.AllowAny]

序列化程序.py

class SurveySerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = Survey
    fields = ('id', 'survey')

class VersionSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
    model = Version
    fields = ('id', 'version', 'survey')

class ProductSerializer(serializers.HyperlinkedModelSerializer):
  class Meta:
      model = Product
      fields = ('id', 'product', 'version')

url.py

router = ExtendDefaultRouter()
router.register(r'surveys', views.SurveyViewSet, base_name='survey')
router.register(r'versions', views.VersionViewSet, parents_query_lookups=['survey']),
router.register(r'products', views.ProductViewSet, parents_query_lookups=['version'])


urlpatterns = [
  url(r'^data/', include(router.urls)),
]

router = ExtendDefaultRouter()
(router.register(r'surveys', views.SurveyViewSet, base_name='survey')
      .register(r'versions', views.VersionViewSet, parents_query_lookups=['survey']),
      .register(r'products', views.ProductViewSet, parents_query_lookups=['version']))

---

为了使项目按照数据的层次结构进行良好的组织，我要做的第一件事是将URL的每一层分离成一个单独的实体，甚至可能是一个单独的文件。第二种方法是向RESTAPI的每一层添加主键端点。最后，它看起来是这样的：

调查_url.py

router.register(r'survey', views.SurveyViewSet, base_name='survey')
router.register(r'survey-version/', include('my_app.rest_server.version_urls'))

router.register(r'version', views.VersionViewSet, base_name='version')
router.register(r'version-product/', include('my_app.rest_server.product_urls'))

router.register(r'product/(?P<pk>[0-9]+)$', views.ProductViewSet, base_name='product')

version\u url.py

router.register(r'survey', views.SurveyViewSet, base_name='survey')
router.register(r'survey-version/', include('my_app.rest_server.version_urls'))

router.register(r'version', views.VersionViewSet, base_name='version')
router.register(r'version-product/', include('my_app.rest_server.product_urls'))

router.register(r'product/(?P<pk>[0-9]+)$', views.ProductViewSet, base_name='product')

product\u url.py

router.register(r'survey', views.SurveyViewSet, base_name='survey')
router.register(r'survey-version/', include('my_app.rest_server.version_urls'))

router.register(r'version', views.VersionViewSet, base_name='version')
router.register(r'version-product/', include('my_app.rest_server.product_urls'))

router.register(r'product/(?P<pk>[0-9]+)$', views.ProductViewSet, base_name='product')

router.register（r'product/（？P[0-9]+）$”，views.ProductViewSet，base_name='product'）

然后，您的最终url可能如下所示：/data/survey version/33/version product/5/product/8

很可能，这是一个不必要的复杂问题，因为每个产品都有自己的唯一id，然后您可以使用一个url（如：/data/product/pk）访问它，使用一个url路由，即上面的最后一行代码

---

我的示例假设记录有一个数字主键，如果不是这样，则必须相应地更改regex。

您应该将调用链接到register（），而不是直接在路由器上调用它们：

url.py

router = ExtendDefaultRouter()
router.register(r'surveys', views.SurveyViewSet, base_name='survey')
router.register(r'versions', views.VersionViewSet, parents_query_lookups=['survey']),
router.register(r'products', views.ProductViewSet, parents_query_lookups=['version'])


urlpatterns = [
  url(r'^data/', include(router.urls)),
]

router = ExtendDefaultRouter()
(router.register(r'surveys', views.SurveyViewSet, base_name='survey')
      .register(r'versions', views.VersionViewSet, parents_query_lookups=['survey']),
      .register(r'products', views.ProductViewSet, parents_query_lookups=['version']))

这是因为NestedRouterMixin.register（）返回NestedRegistryItem的实例，该类理解

parents\u query\u lookups

参数