Question

我有一个字段需要从get put隐藏，它需要放在Viewset的put中，我将如何实现？

我的序列化器如下所示，该字段将数据存储为JSON，所以我需要将其加载为JSON才能执行获取。但是在get上有原始字段（routing_data）会导致500错误，因此我需要将其隐藏在get中。但是当我使用看跌期权时，它将是我放入的该字段。

谢谢

serializers.py

class MonitoringSerializerRoutingTable(serializers.ModelSerializer):
    hostname = serializers.ReadOnlyField(source='device.hostname', )
    site_id = serializers.ReadOnlyField(source='device.site_id', )
    rt = serializers.SerializerMethodField(source='routing_data',)
    use = serializers.ReadOnlyField(source='device_use.use', )

    def get_rt(self, instance):
        try:
            return json.loads(instance.routing_data)
        except:
            return instance.routing_data

    class Meta:
        model = DeviceData
        fields = ('id','site_id','device_id','hostname','use', 'timestamp', 'rt','routing_data')

views.py

class MonitoringRoutingTableUpload(viewsets.ModelViewSet):
    queryset = DeviceData.objects.select_related('device','device_use').order_by('monitoring_order')
    serializer_class = MonitoringSerializerRoutingTable
    permission_classes = (IsAdminUser,)   
    filter_class = DeviceData
    filter_backends = (filters.SearchFilter,)
    search_fields = ('device__hostname','device_use__use')

编辑更新序列化程序似乎并没有更新数据

class MonitoringRoutingTableUpload(viewsets.ModelViewSet):
    queryset = DeviceData.objects.select_related('device','device_use').order_by('monitoring_order')
    permission_classes = (IsAdminUser,)   
    filter_class = DeviceData
    filter_backends = (filters.SearchFilter,)
    search_fields = ('device__hostname','device_use__use') 
    def get_serializer_class(self):
        serializers = {
            create: MonitoringCreateSerializer,
            update: MonitoringCreateSerializer,
            list: MonitoringSerializerRoutingTable,
            retrieve: MonitoringSerializerRoutingTable,
        }
        return serializers.get(self.action)

serialiezr.py

class MonitoringSerializerRoutingTable(serializers.ModelSerializer):
    hostname = serializers.ReadOnlyField(source='device.hostname', )
    site_id = serializers.ReadOnlyField(source='device.site_id', )
    rt = serializers.SerializerMethodField(source='routing_data',)
    use = serializers.ReadOnlyField(source='device_use.use', )

    def get_rt(self, instance):
        try:
            return json.loads(instance.routing_data)
        except:
            return instance.routing_data

    class Meta:
        model = DeviceData
        fields = ('id','site_id','device_id','hostname','use', 'timestamp', 'rt')   

class MonitoringCreateSerializer(serializers.ModelSerializer):

    class Meta:
        model = DeviceData
        fields = ('id','site_id','device_id','routing_data')

PUT请求

URL: http://10.66.193.200:8100/api/rt_upload/9/
data: {"routing_data": "[{'subnet': '10.10.0.0/16', 'age': '6w3d', 'next_hop': '10.20.0.0/16'}, {'subnet': '10.30.0.0/16', 'age': '6w3d', 'next_hop': '10.40.0.0/16'}, {'subnet': '10.50.0.0/16', 'age': '6w3d'...}]"}

邮递员的回复：

{
    "id": 9,
    "site_id": 118,
    "device_id": 460,
    "hostname": "EDGE",
    "use": "Remote Site Connectivity",
    "timestamp": "2019-05-31T10:12:58.300252",
    "rt": ""
}

Answer 1

在您的序列化器字段中添加write_only = True

或

创建两个串行器，一个用于获取请求，另一个用于放置请求。根据视图的get_serializer_class方法内的request方法更改序列化器。

Answer 2

在这种情况下，可以对get和put / post使用不同的序列化器。使用所需的字段创建一个新的序列化器，然后删除serializer_class属性并在视图中覆盖get_serializer_class。像这样：

class MonitoringRoutingTableUpload(viewsets.ModelViewSet):
    ...
    def get_serializer_class(self):
        serializers = {
            create: MonitoringCreateSerializer,
            update: MonitoringCreateSerializer,
            list: MonitoringSerializerRoutingTable,
            retrieve: MonitoringSerializerRoutingTable,
        }
        return serializers.get(self.action)

Django Rest API DRF-ViewSet从get中隐藏字段但包含put

2 个答案: