django - put 方法不适用于 RetrieveUpdateDestroyAPIView Django Rest Framework Angular

Question

我正在尝试在 django Rest 框架中发出 put 请求。我的 View 继承自 RetrieveUpdateDestroyAPIView 类。

我在前端使用 Angular，在后端使用 Django Rest。

错误如下:

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

这里是从 Angular 端到 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);

被映射到django端的url:

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

View 类

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

RetrieveUPdateDestoryAPIView 文档:

http://www.django-rest-framework.org/api-guide/generic-views/#updatemodelmixin

检索更新销毁APIView 用于读写删除端点来表示单个模型实例。

提供 get、put、patch 和 delete 方法处理程序。

扩展:GenericAPIView、RetrieveModelMixin、UpdateModelMixin、DestroyModelMixin

RetrieveUpdateDestroyAPIView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)

Answer 1

您的 SearchCityListCreate 的 URL 模式与 /city/x/ 匹配，因此您的请求正在由错误的 View 处理。

您通过切换顺序解决了该问题，但更好的解决方法是确保您的正则表达式具有 ^ 和 $ 分别标记 URL 的开头和结尾.

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