为什么 DRF 分页不适用于泛型 API 服务器

Question

settings.py

REST_FRAMEWORK = {
'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE': 1,
}

views.py

class example(GenericAPIView): 
    queryset = example.objects.all()
    serializer_class = ExampleSerializer
    def get(self, request, format=None):
        query = request.GET.get('name')
        if query:
            bla = example.objects.filter(name=query)
        else:
            bla = example.objects.all()
        if bla:
            serializer = ExampleSerializer(bla, many=True)
            return Response(serializer.data)
        else:
            return Response(status=status.HTTP_404_NOT_FOUND)

现在，如果我转到端点 ？page=1，仍然返回 5000 条记录。 将分页放在我的 settings.py 中还不够吗？ 我是否需要向视图添加特定于分页的代码？

Answer 1

使用自定义分页：

from django.core.paginator import Paginator, PageNotAnInteger, EmptyPage
def get(self, request, format=None):
    query = request.GET.get('name')
    limit = request.query_params.get("limit", 5) #objects per page
    offset = request.query_params.get("offset", 1) #page no
    if query:
        bla = example.objects.filter(name=query)
    else:
        bla = example.objects.all()
    if bla:
        try:
            paginator = Paginator(bla, limit)
        except:
            paginator = Paginator(bla, 10)
        try:
            bl = paginator.page(offset)
        except PageNotAnInteger:
            bl = paginator.page(1)
        except EmptyPage:
            bl = paginator.page(paginator.num_pages)
        count = paginator.count
        next = None if not bl.has_next() else bl.next_page_number()
        previous = None if not bl.has_previous() else bl.previous_page_number()
        serializer = ExampleSerializer(bl, many=True)
        data = {"count": count, 'next': next, 'previous': previous, 'results': serializer.data}
        return Response(data, status=status.HTTP_200_OK)
    else:
        return Response(status=status.HTTP_404_NOT_FOUND)