# 轉載請留言聯絡

• 子類檢視：

• 對比以及使用(GenericAPIView+五個拓展類 VS 子類檢視)

1.GenericAPIView+五個拓展類

class DepartmentListAPIView(ListModelMixin,CreateModelMixin,GenericAPIView):

    queryset = Department.objects.all()
    serializer_class 
 
= DepartmentSerializer

    def get(self,request):
        """查詢多條資料"""
        return self.list(request)

    def post(self,request):
        """新增一條資料"""
        return self.create(request)

class DepartmentDetailAPIView(RetrieveModelMixin,UpdateModelMixin,DestroyModelMixin,GenericAPIView):

    queryset = Department.objects.all()
    serializer_class = DepartmentSerializer

    def get(self,request,pk):
        """查詢一條資料"""
        return self.retrieve(request,pk)

    def post(self,request,pk):
        """修改部門"""
        return self.update(request,pk)

    def delete(self,request,pk):
        """刪除一個部門"""
        return self.destroy(request,pk)

2.子類檢視

class DepartmentListAPIView(ListAPIView,CreateAPIView):
    ”“”實現了查詢多條資料和新增一條資料的功能"""
    queryset = Department.objects.all()
    serializer_class = DepartmentSerializer


class DepartmentDetailAPIView(RetrieveUpdateDestroyAPIView):
    """實現了查詢一條資料、修改一條資料、刪除一條資料的功能"""
    queryset = Department.objects.all()
    serializer_class = DepartmentSerializer

 3.子類檢視的原始碼分析

# Concrete view classes that provide method handlers
# by composing the mixin classes with the base view.

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


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


class RetrieveAPIView(mixins.RetrieveModelMixin,
                      GenericAPIView):
    """
    Concrete view for retrieving a model instance.
    """
    def get(self, request, *args, **kwargs):
        return self.retrieve(request, *args, **kwargs)


class DestroyAPIView(mixins.DestroyModelMixin,
                     GenericAPIView):
    """
    Concrete view for deleting a model instance.
    """
    def delete(self, request, *args, **kwargs):
        return self.destroy(request, *args, **kwargs)


class UpdateAPIView(mixins.UpdateModelMixin,
                    GenericAPIView):
    """
    Concrete view for updating a model instance.
    """
    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)


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)


class RetrieveUpdateAPIView(mixins.RetrieveModelMixin,
                            mixins.UpdateModelMixin,
                            GenericAPIView):
    """
    Concrete view for retrieving, updating 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)


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

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


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)

實際上就是把(GenericAPIView+五個拓展類)的函式封裝一下，return回去而已......