使用 SimpleRouter 与 ViewSet 发生 Django 错误

Question

视图.py

from rest_framework import viewsets
from rest_framework.response import Response
from rest_framework import generics
from ticker.serializers import PriceSerializer
from ticker.models import Price
import datetime
from nexchange.settings import DEFAULT_HOUR_RANGE


class LastPricesViewSet(viewsets.ViewSet):
    def list(self, request):
        queryset = Price.objects.filter().order_by('-id')[:2]
        serializer = PriceSerializer(queryset, many=True)
        return Response(serializer.data)


class PriceHistoryViewSet(generics.ListAPIView):
    serializer_class = PriceSerializer

    def get_queryset(self, request):
        hours = self.request.query_params.get('hours', DEFAULT_HOUR_RANGE)
        relevant = datetime.datetime.now() - datetime.timedelta(seconds=hours * 3600)
        queryset = Price.objects.filter(created_on__gte=relevant).order_by('id')
        return queryset

网址.py：

from rest_framework.routers import SimpleRouter
from ticker.views import LastPricesViewSet, PriceHistoryViewSet

router = SimpleRouter()
router.register(r'price/latest', LastPricesViewSet, base_name='latest')
router.register(r'price/history', PriceHistoryViewSet, base_name='history')
api_patterns = router.urls

在（没有basename kwarg）期间引发以下错误runserver： AssertionError:base_name argument not specified, and could not automatically determine the name from the viewset, as it does not have a.querysetattribute.

但是，当我添加 Wished 时basename，错误变为： TypeError: as_view() takes 1 positional argument but 2 were given

我怀疑这可能与在一个路由器中组合 ViewSet 和 ListAPIView 有关。

Answer 1

解决方案：您必须继承来viewsets.ViewSetMixin实现 ViewSetClass 向 DRF 路由器注册所需的方法，否则可以使用简单的 Djangourlconf表示法。

views.py:

class PriceHistoryViewSet(viewsets.ViewSetMixin, generics.ListAPIView):
    serializer_class = PriceSerializer

    def get_queryset(self, *args, **kwargs):
        hours = self.request.query_params.get('hours', DEFAULT_HOUR_RANGE)
        relevant = datetime.datetime.now() - datetime.timedelta(seconds=hours * 3600)
        queryset = Price.objects.filter(created_on__gte=relevant).order_by('id')
        return queryset

urls.py:

from rest_framework.routers import SimpleRouter
from ticker.views import LastPricesViewSet, PriceHistoryViewSet

router = SimpleRouter()
router.register(r'price/latest', LastPricesViewSet, base_name='latest')
router.register(r'price/history', PriceHistoryViewSet, base_name='history')
api_patterns = router.urls