python - Django rest api DRF - ViewSet 从 get 中隐藏一个字段，但包含 put

问题描述

我有一个字段，我需要从一个 get put 中隐藏它需要在那里放置一个 Viewset，我将如何实现这一点？

我的序列化器如下所示，该字段将数据存储为 JSON，因此我需要将其加载为 JSON 以执行获取。但是在 get 上有原始字段（routing_data）会导致 500 错误，所以我需要从 get 中隐藏它。但是当我使用 put 时，它将是我放入的这个字段。

谢谢

序列化程序.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')

视图.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)

序列化程序.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')

放置请求

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": ""
}

标签： pythondjangodjango-rest-framework

在这种情况下，您可以为 get 和 put/post 使用不同的序列化程序。使用您需要的字段创建一个新的序列化程序，然后删除该serializer_class属性并覆盖get_serializer_class 视图中的。像这样的东西：

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

python - Django rest api DRF - ViewSet 从 get 中隐藏一个字段，但包含 put

问题描述

解决方案

推荐阅读