Question

我正在尝试更新我的数据库的对象（但只有一个字段），问题是，当我尝试进行更新时，我得到一个错误，指出不允许使用PUT方法。

这是我的观点：

class DeviceViewSet(viewsets.ModelViewSet):
    """
    Show, create and filter devices.
    """
    queryset = Device.objects.all()
    serializer_class = DeviceSerializer

    def list(self, request, *args, **kwargs):
        devices = Device.objects.filter(user=request.user.pk, role='E')
        serializer = DeviceSerializer(devices, many=True)
        return Response(serializer.data)

    def create(self, request, *args, **kwargs):
        data = {
            'registration_id': request.data['regId'], 'user': request.user.pk, 'device_id': request.data['imei'],
            'type': 'android', 'label': request.data['label'], 'role': request.data['role']
        }
        serializer = DeviceSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            device = Device.objects.filter(device_id=request.data['imei'])
            device.send_message("Enhorabuena!", "El dispositivo se ha registrado correctamente.")
            return Response(serializer.data)
        return Response(serializer.errors)

    def update(self, request, *args, **kwargs):
         device = Device.objects.filter(device_id=request.data['imei'])
         device.registration_id = request.data['regId']
         device.save()
         serializer = DeviceSerializer(device)
        return Response({'ok': 'oks'})

我的序列化器：

class DeviceSerializer(serializers.ModelSerializer):
    user = serializers.PrimaryKeyRelatedField(queryset=User.objects.all(), required=False)

    class Meta:
        model = Device
        fields = '__all__'

我的网址：

from django.conf.urls import url
from rest_framework.urlpatterns import format_suffix_patterns

from decaught import views

urlpatterns = [
    url(r'^devices/$', views.DeviceViewSet),

]

urlpatterns = format_suffix_patterns(urlpatterns)

我正在使用Postman发送PUT请求：

知道出了什么问题吗？

Answer 1

PUT设置时，资源标识符应位于URL（pk）中。 PUT请求是幂等。 https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PUT

在DRF文档中，将pk作为参数传递给更新方法

def update(self, request, pk=None):
    pass

http://www.django-rest-framework.org/api-guide/viewsets/#viewset-actions

代替传递它作为key：value对并通过request.data PUT调用来访问它应该像

localhost:8000/devices/<PK-HERE>/

（对不起，英语不好）

Answer 2

错误在我们的网址中。您需要选择一些device到PUT信息。试试localhost:8000/devices/1/。我假设您的API通过pk

获取对象

Django休息框架更新不允许

2 个答案: