猿创征文 | DjangoRESTframework(八)-9个视图子类的详细使用

DjangoRESTframework(七)-五个扩展类的使用（Create、ListModel，Retrieve，Update，Destroy）

一、CreateAPIView

rest_framework.generics.CreateAPIView

作用：创建一个新的模型对象

继承自： GenericAPIView、CreateModelMixin

在CreateModelMixin的原有基础上提供了post方法，内部调用了CreateModelMixin的create方法，使得代码更加精简

1、源代码

class CreateAPIView(mixins.CreateModelMixin,
                    GenericAPIView):
    """
    Concrete view for creating a model instance.
    """
    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

2、对比使用

继承 GenericAPIView、CreateModelMixin

class CreateApiView(GenericAPIView, CreateModelMixin):
    serializer_class = BookSerializer
    queryset = BookInfo.objects

    def post(self, request):
        return self.create(request)

继承CreateAPIView

class _CreateApiView(CreateAPIView):
    serializer_class = BookSerializer
    queryset = BookInfo.objects

二、ListAPIView

rest_framework.generics.ListAPIView

作用：获取所有模型对象的数据

继承自：GenericAPIView、ListModelMixin

在ListModelMixin的继承上提供了get方法，内部调用了ListModelMixin的list方法

1、源代码

class ListAPIView(mixins.ListModelMixin,
                  GenericAPIView):
    """
    Concrete view for listing a queryset.
    """
    def get(self, request, *args, **kwargs):
        return self.list(request, *args, **kwargs)

2、对比使用

继承GenericAPIView、ListModelMixin

class ListApiView(GenericAPIView, ListModelMixin):
    serializer_class = BookSerializer
    queryset = BookInfo.objects

    def get(self, request):
        return self.list(request)

继承ListAPIView

class _ListApiView(ListApiView):
    serializer_class = BookSerializer
    queryset = BookInfo.objects

三、RetrieveAPIView

rest_framework.generics.RetrieveAPIView

作用：获取单一模型对象数据

继承自: GenericAPIView、RetrieveModelMixin

在RetrieveModelMixin的基础上提供了get方法，内部调用了RetrieveModelMixin的retrieve方法

1、源代码