指定 filter_backends，并设定用来排序的字段 ordering_fields 即可。

from rest_framework import viewsets
from .models import Category
from .serializers import CategorySerializer
from rest_framework.filters import OrderingFilter

class CategoryViewSet(viewsets.ModelViewSet):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    filter_backends = [OrderingFilter]
    ordering_fields = ('id', 'sort')

# http://localhost:8000/categories/?ordering=-sort