Django Rest 框架 - APIView 分页 [英] Django Rest Framework - APIView Pagination

问题描述

我有一个非常简单的APIView，但我不知道如何在这里设置分页.在这个场景中，我选择了一个带有给定 pk 的 Event，然后我得到了分配给这个 Event 的所有 NewsItems.

I have a very simple APIView, but I don't know how to setup pagination here. In this scenario I select an Event with given pk, then I get all the NewsItems assigned to this Event.

pagination_class = LimitOffsetPagination 工作正常，例如.queryset = Event.objects.all() 但不使用自定义 get:

pagination_class = LimitOffsetPagination works OK when I define queryset at the beginning in ListCreateAPIView, for ex. queryset = Event.objects.all() but not with custom get:

class EventNewsItems(APIView):
    pagination_class = LimitOffsetPagination

    def get(self, request, pk, format=None):

        #user = request.user
        event = Event.objects.get(pk=pk)
        news = event.get_news_items().all()

        serializer = NewsItemSerializer(news, many=True, context={'request':request})
        response = Response(serializer.data, status=status.HTTP_200_OK)
        return response

<小时>

已解决:

def get(self, request, pk, format=None):

    #user = request.user
    event = Event.objects.get(pk=pk)
    news = event.get_news_items().all()
    paginator = LimitOffsetPagination()
    result_page = paginator.paginate_queryset(news, request)
    serializer = NewsItemSerializer(result_page, many=True, context={'request':request})
    response = Response(serializer.data, status=status.HTTP_200_OK)
    return response

推荐答案

另一个选择是从分页类继承，对视图类进行较少的更改:

Another option would be inheriting from the pagination class, with fewer changes on the view class:

from rest_framework.pagination import LimitOffsetPagination

class EventNewsItems(APIView, LimitOffsetPagination):

    def get(self, request, pk, format=None):
        event = Event.objects.get(pk=pk)
        news = event.get_news_items().all()

        results = self.paginate_queryset(news, request, view=self)
        serializer = NewsItemSerializer(results, many=True)
        return self.get_paginated_response(serializer.data)

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