Django Rest framework后端接口框架，常用的子类视图

一、子类视图有哪些

 DRF最高级别封装的子类视图一览（9个）：

视图	作用	方法	父类
ListAPIView	查询多条数据	get	GenericAPIView ，ListModelMixin
CreateAPIView	新增一条数据	post	GenericAPIView ，CreateModelMixin
ListCreateAPIView	查询多条数据，或者新增一条数据	get,post	GenericAPIView，ListModelMixin，CreateModelMixin
RetrieveAPIView	查询一条数据	get	GenericAPIView ，RetrieveModelMixin
UpdateAPIView	修改一条数据	put，patch	GenericAPIView ，UpdateModelMixin
DestroyAPIView	删除一条数据	delete	GenericAPIView ，DestroyModelMixin
RetrieveDestroyAPIView	查询或者删除一条数据	get, delete	GenericAPIView，RetrieveModelMixin，DestroyModelMixin
RetrieveUpdateAPIView	查询，更新一条数据	get，put，patch	GenericAPIView ，RetrieveModelMixin ，UpdateModelMixin
RetrieveUpdateDestroyAPIView	获取，更新，删除一条数据	get，put，patch，delete	GenericAPIView RetrieveModelMixin UpdateModelMixin DestroyModelMixin

二、5个扩展类：

1. RetrieveModelMixin
2. ListModelMixin
3. CreateModelMixin
4. DestroyModelMixin
5. UpdateModelMixin

三、子类视图源码

查看一下子类视图的源码：（取其中一个ListCreateAPIView分析就行，其他类似）

class ListCreateAPIView(mixins.ListModelMixin,
                        mixins.CreateModelMixin,
                        GenericAPIView):
    """
    Concrete view for listing a queryset or creating a model instance.
    """
    def get(self, request, *args, **kwargs):
        return self.list(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

发现子类视图中只是将GenericAPIView+5种扩展类组合，并封装一下，直接return回去