Django Rest 框架 Copeapi LinkLookupError

Question

我在尝试获取 Django Rest Framework 提供的端点时收到 LinkLookupError。此错误仅在单个成功请求后发生。我的 DRF view.py 看起来像：

class RecordViewSet(viewsets.ReadOnlyModelViewSet):
    """
    API endpoint that allows Records to be viewed or edited.

    """
    filter_backends = (SimpleRecordFilterBackend,)
    serializer_class = RecordSerializer
    permission_classes = (IsAuthenticated,)

    @action(detail=False, url_path='tagsum/(?P<account>[^/.]+)/(?P<tag>[^/.]+)')
    def tagsum(self, request, account, tag):
        if not account or not tag:
            return Response({'status': "need accoutn and tag"})
        sum =  Records.objects.filter(linkedaccount_id=account).filter(user_project=tag).aggregate(total=Sum('unblendedcost'))
        return Response({'sum': sum['total']})

    def get_queryset(self):
        q = Q()
        linkedaccount_id = self.request.query_params.get("linkedaccount_id") or ''
        user_project = self.request.query_params.get("user_project") or ''
        if linkedaccount_id:
            q &= Q(linkedaccount_id=linkedaccount_id)
        if user_project:
            q &= Q(user_project=user_project)
        return Records.objects.filter(q).annotate(Sum('unblendedcost'))

修改视图文件后调用$coreapi get http://localhost:8000/api/docs/，看到：

...
    records: {
        list([page], [linkedaccount_id], [productname], [user_project])
        tagsum(account, tag)
        read(id, [linkedaccount_id], [productname], [user_project])
    }
...

并且在调用该端点的一页加载之后，当我运行相同的命令时，我看到了这个输出：

...
    records: {
        tagsum: {
            read(account, tag)
        }
        list([page], [linkedaccount_id], [productname], [user_project])
        read(id, [linkedaccount_id], [productname], [user_project])
    }
...

请注意，tagsum 方法现在嵌套了 read 方法。现在调用端点return出现以下错误。

errors.js:10 Uncaught LinkLookupError: Invalid link lookup: ["records","tagsum"]
    at new LinkLookupError (errors.js:10)
    at lookupLink (client.js:19)
    at Client.action (client.js:38)
    at eval (ProjectTagBilling.js:40)
    at invokePassiveEffectCreate (react-dom.development.js:23482)
    at HTMLUnknownElement.callCallback (react-dom.development.js:3945)
    at Object.invokeGuardedCallbackDev (react-dom.development.js:3994)
    at invokeGuardedCallback (react-dom.development.js:4056)
    at flushPassiveEffectsImpl (react-dom.development.js:23569)
    at unstable_runWithPriority (scheduler.development.js:468)

如有任何建议，我们将不胜感激。

Answer 1

解决方法，使用 fetch。

HTML

    <script>
        const csrftoken = document.querySelector('[name=csrfmiddlewaretoken]').value;
    </script>

JS

    useEffect(() => {
        setIsLoading(true)
        fetch(`/api/records/tagsum/${'432399220289'}/${props.tag}/`, {
            headers: {'X-CSRFToken': csrftoken},
            mehtod: 'GET'
        }).then(response => response.json()).then(result => {
            setIsLoading(false)
            setSum(result.sum)
        })
    },[])

Django Rest 框架 Copeapi LinkLookupError

Django Rest Framework Copeapi LinkLookupError

python

django

core-api

django-rest-framework