如何向Django rest框架中通过视图集发送的响应添加元数据(计数、下一个、上一个)

from rest_framework.decorators import action
from rest_framework.response import Response

class YourViewSet(viewsets.ModelViewSet):
    # 其他视图集的配置...

    @action(detail=False, methods=['get'])
    def metadata(self, request):
        queryset = self.filter_queryset(self.get_queryset())
        count = queryset.count()
        next_url = self.get_next_link()
        previous_url = self.get_previous_link()
        metadata = {
            'count': count,
            'next': next_url,
            'previous': previous_url
        }
        return Response(metadata)

from django.urls import include, path
from rest_framework.routers import DefaultRouter

router = DefaultRouter()
router.register(r'your-model', YourViewSet, basename='your-model')

urlpatterns = [
    path('', include(router.urls)),
]