Django Rest Framework-查询映射表中两个字段的精确匹配

我正在使用DRF，并试图搜索映射表中的精确匹配项，以便更新该记录

我有以下表格：

site
- id
- location
- address

circuit
- id
- name
- ref

sitecircuits
- site_id
- circuit_id
- active_link

我当前的DRF配置如下：

看法

串行器

class MonitoringSerializerConnectivity(serializers.ModelSerializer):

    class Meta:
        model = SiteCircuits
        fields = ('site_id','circuit_id','active_link',) 

网址

此url 返回所有结果（因为我根本不搜索）

我也试着使用下面的

网址：

视图：

使用url时也会失败（表示它只接受一个值而不是两个值）

有人知道这里的正确组合吗？是否需要进行任何特殊操作来过滤和更新映射表

谢谢

编辑

在重写QuerySet时，我现在得到以下错误：

Traceback:

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  34.             response = get_response(request)

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  115.                 response = self.process_exception_by_middleware(e, request)

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  113.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/usr/local/lib/python3.6/site-packages/django/views/decorators/csrf.py" in wrapped_view
  54.         return view_func(*args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/viewsets.py" in view
  116.             return self.dispatch(request, *args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  495.             response = self.handle_exception(exc)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in handle_exception
  455.             self.raise_uncaught_exception(exc)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in raise_uncaught_exception
  466.         raise exc

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  492.             response = handler(request, *args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/mixins.py" in list
  40.         queryset = self.filter_queryset(self.get_queryset())

File "/usr/local/lib/python3.6/site-packages/rest_framework/generics.py" in filter_queryset
  152.             queryset = backend().filter_queryset(self.request, queryset, self)

File "/usr/local/lib/python3.6/site-packages/django_filters/rest_framework/backends.py" in filter_queryset
  90.         filterset = self.get_filterset(request, queryset, view)

File "/usr/local/lib/python3.6/site-packages/django_filters/rest_framework/backends.py" in get_filterset
  36.         return filterset_class(**kwargs)

File "/usr/local/lib/python3.6/site-packages/django/db/models/base.py" in __init__
  501.                 raise TypeError("%s() got an unexpected keyword argument '%s'" % (cls.__name__, kwarg))

Exception Type: TypeError at /api/conn_set/
Exception Value: SiteCircuits() got an unexpected keyword argument 'data'

---

我认为最简单的解决方案是这样尝试（覆盖

get\u queryset

方法）：

---

我认为最简单的解决方案是这样尝试（覆盖

get\u queryset

方法）：

---

您可以在这里使用django过滤器

from django_filters.rest_framework.backends import DjangoFilterBackend


class MonitoringConnectivitySet(viewsets.ModelViewSet):
    queryset = SiteCircuits.objects.all()
    serializer_class = MonitoringSerializerConnectivity
    permission_classes = (IsAdminUser,)
    filter_class = SiteCircuits
    search_fields = ('site__id', 'circuit__id')

    filter_backends = (filters.SearchFilter, DjangoFilterBackend)
    filterset_fields = ('site__id', 'circuit__id')

---

您可以在这里使用django过滤器

from django_filters.rest_framework.backends import DjangoFilterBackend


class MonitoringConnectivitySet(viewsets.ModelViewSet):
    queryset = SiteCircuits.objects.all()
    serializer_class = MonitoringSerializerConnectivity
    permission_classes = (IsAdminUser,)
    filter_class = SiteCircuits
    search_fields = ('site__id', 'circuit__id')

    filter_backends = (filters.SearchFilter, DjangoFilterBackend)
    filterset_fields = ('site__id', 'circuit__id')

---

我通过以下几点达到了我的期望：

网址：

视图：

---

我通过以下几点达到了我的期望：

网址：

视图：

---

当方法get_queryset可以完成时，不必安装第三个包。：）保持简单。是的..但是，如果要对N个字段执行相同的操作，该怎么办？在这种情况下，

get\u queryset（）

方法中的代码将是其中的一部分，DRF维护人员也推荐使用这个包。。。如果：）您可以在get_queryset中创建更通用的内容。有一个循环。我宁愿避免使用第三个软件包，因为您总是需要有人来维护它。但我理解你的观点；）有人考虑过它（通用方法），创建了一些通用的东西，它得到了普及……于是第三方软件包就诞生了。当方法get_queryset可以做到这一点时，不需要安装第三方软件包。：）保持简单。是的..但是，如果你想对N个字段做同样的事情呢？在这种情况下，

get\u queryset（）

方法中的代码将是其中的一部分，DRF维护人员也推荐使用这个包。。。如果：）您可以在get_queryset中创建更通用的内容。有一个循环。我宁愿避免使用第三个软件包，因为您总是需要有人来维护它。但我理解你的观点；）有人考虑过它（泛型方法），创建了一些泛型的东西，它很受欢迎……于是第三方软件包诞生了。我收到一个错误SiteCircuits（）得到了一个意外的关键字参数“data”，我在原始问题中发布了完整的回溯我认为您应该从视图集中删除filter_class属性。我收到一个错误SiteCircuits（）获取了一个意外的关键字参数“data”，我在原始问题中发布了完整的回溯我认为您应该从视图集中删除filter_class属性。

class MonitoringSerializerConnectivity(serializers.ModelSerializer):

    class Meta:
        model = SiteCircuits
        fields = ('site_id','circuit_id','active_link',) 

    def get_queryset(self):
            site_id = self.kwargs['site_id']
            circuit_id = self.kwargs['circuit_id']
            return SiteCircuits.objects.filter(site_id=site_id,circuit_id=circuit_id)        

class MonitoringConnectivitySet(viewsets.ModelViewSet):
    queryset = SiteCircuits.objects.all()
    serializer_class = MonitoringSerializerConnectivity
    permission_classes = (IsAdminUser,)   

Traceback:

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  34.             response = get_response(request)

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  115.                 response = self.process_exception_by_middleware(e, request)

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  113.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/usr/local/lib/python3.6/site-packages/django/views/decorators/csrf.py" in wrapped_view
  54.         return view_func(*args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/viewsets.py" in view
  116.             return self.dispatch(request, *args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  495.             response = self.handle_exception(exc)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in handle_exception
  455.             self.raise_uncaught_exception(exc)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in raise_uncaught_exception
  466.         raise exc

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  492.             response = handler(request, *args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/mixins.py" in list
  40.         queryset = self.filter_queryset(self.get_queryset())

File "/usr/local/lib/python3.6/site-packages/rest_framework/generics.py" in filter_queryset
  152.             queryset = backend().filter_queryset(self.request, queryset, self)

File "/usr/local/lib/python3.6/site-packages/django_filters/rest_framework/backends.py" in filter_queryset
  90.         filterset = self.get_filterset(request, queryset, view)

File "/usr/local/lib/python3.6/site-packages/django_filters/rest_framework/backends.py" in get_filterset
  36.         return filterset_class(**kwargs)

File "/usr/local/lib/python3.6/site-packages/django/db/models/base.py" in __init__
  501.                 raise TypeError("%s() got an unexpected keyword argument '%s'" % (cls.__name__, kwarg))

Exception Type: TypeError at /api/conn_set/
Exception Value: SiteCircuits() got an unexpected keyword argument 'data'

class MonitoringConnectivitySet(viewsets.ModelViewSet):
    queryset = SiteCircuits.objects.all()
    serializer_class = MonitoringSerializerConnectivity
    permission_classes = (IsAdminUser,)   
    # filter_class = SiteCircuits

    def get_queryset(self):
        qs = super(MonitoringConnectivitySet, self).get_queryset()
        site = self.request.query_params.get('site')
        circuit = self.request.query_params.get('circuit')
        if site:
            qs = qs.filter(site_id=site)
        if circuit:
            qs = qs.filter(circuit_id=circuit)
        return qs

 # Usage
 http://localhost:8100/api/conn_set/?site=8&circuit=7

from django_filters.rest_framework.backends import DjangoFilterBackend


class MonitoringConnectivitySet(viewsets.ModelViewSet):
    queryset = SiteCircuits.objects.all()
    serializer_class = MonitoringSerializerConnectivity
    permission_classes = (IsAdminUser,)
    filter_class = SiteCircuits
    search_fields = ('site__id', 'circuit__id')

    filter_backends = (filters.SearchFilter, DjangoFilterBackend)
    filterset_fields = ('site__id', 'circuit__id')

http://localhost:8100/api/conn_set/?site__id=8&circuit__id=7

path('conn_set/<int:site_id>/<int:circuit_id>/', views.MonitoringConnectivitySet.as_view())

class MonitoringSerializerConnectivity(serializers.ModelSerializer):

    class Meta:
        model = SiteCircuits
        fields = ('site_id','circuit_id','active_link',) 

class MonitoringConnectivitySet(generics.GenericAPIView):
    serializer_class = MonitoringSerializerConnectivity
    permission_classes = (IsAdminUser,)   

    def get(self, request, *args, **kwargs):
        site_id = kwargs.get('site_id', '0')
        circuit_id = kwargs.get('circuit_id', '0')
        instance = get_object_or_404(SiteCircuits, site_id=site_id, circuit_id=circuit_id)
        serializer = self.get_serializer(instance)
        return Response(serializer.data)

    def put(self, request, *args, **kwargs):
        site_id = kwargs.get('site_id', '0')
        circuit_id = kwargs.get('circuit_id', '0')
        instance = get_object_or_404(SiteCircuits, site_id=site_id, circuit_id=circuit_id)
        serializer = MonitoringSerializerConnectivity(instance, data=request.data)

        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data,status=status.HTTP_200_OK)
        return Response(serializer.errors,status=status.HTTP_400_BAD_REQUEST)