from rest_framework.pagination import PageNumberPagination

class BookView(APIView):

    # authentication_classes = [UserAuth]

    # permission_classes = [SVIPPermission]

    # throttle_classes = [VisitThrottle]

    # renderer_classes = []

    def get(self,request):

        '''

        查看所有书籍

        :param request:

        :return:

        '''

        class MyPageNumberPagination(PageNumberPagination):

            page_size=2

            page_query_param="page_num"

            page_size_query_param="size"

            max_page_size=5

        print(request.user,request.auth)

        book_list=Book.objects.all()

        pnp=MyPageNumberPagination()

        paged_book_list=pnp.paginate_queryset(book_list,request)



        serializer=BookSerializer(paged_book_list,many=True)

        return Response(serializer.data)

    def post(self,request):

        '''

        添加一条书籍

        :param request:

        :return:

        '''

        print(request.data)

        serializer=BookSerializer(data=request.data,many=False)

        if serializer.is_valid():

            serializer.save() # create操作

            return Response(serializer.data)

        else:

            return Response(serializer.errors)