我正在尝试在djangorest框架中发出一个put请求。我的视图继承自RetrieveUpdateDestroyAPIView类。
我在前端使用角形，在后端使用django休息。
下面是错误：

Failed to load resource: the server responded with a status of 405 (Method Not Allowed)
ERROR 
detail:"Method "PUT" not allowed."

下面是从angular side到django rest的put请求的完整实现

editcity(index){
    this.oldcityname = this.cities[index].city;
     const payload = {
      citypk: this.cities[index].pk,
      cityname: this.editcityform.form.value.editcityinput
    };
     this.suitsettingsservice.editcity(payload, payload.citypk)
       .subscribe(
         (req: any)=>{
           this.cities[index].city = req.city;
           this.editcitysucess = true;
           // will have changed
           this.newcityname = this.cities[index].city;
         }
       );
  }

被调用的服务

editcity(body, pk){
    const url = suitsettingscity + '/' + pk;
    return this.http.put(url, body);

该url被Map到django侧：

url(r'^city/(?P<pk>[0-9]+)',SearchCityDetail.as_view())

视图类

class SearchCityDetail(RetrieveUpdateDestroyAPIView):
    queryset = SearchCity.objects.all()
    serializer_class = SearchCitySerializer

检索更新数据销毁API查看文档：
http://www.django-rest-framework.org/api-guide/generic-views/#updatemodelmixin
RetrieveUpdateDestroyAPIView用于读-写-删除端点以表示单个模型示例。
提供get、put、patch和delete方法处理程序。
扩展：通用API视图、检索模型混合、更新模型混合、销毁模型混合
检索更新销毁API视图源代码：

class RetrieveUpdateDestroyAPIView(mixins.RetrieveModelMixin,
                                   mixins.UpdateModelMixin,
                                   mixins.DestroyModelMixin,
                                   GenericAPIView):
    """
    Concrete view for retrieving, updating or deleting a model instance.
    """
    def get(self, request, *args, **kwargs):
        return self.retrieve(request, *args, **kwargs)

    def put(self, request, *args, **kwargs):
        return self.update(request, *args, **kwargs)

    def patch(self, request, *args, **kwargs):
        return self.partial_update(request, *args, **kwargs)

    def delete(self, request, *args, **kwargs):
        return self.destroy(request, *args, **kwargs)