“AutoField”对象没有“remote_field”属性

Question

我在Django 1.8中遇到一个奇怪的错误：

'AutoField' object has no attribute 'remote_field'

我有一个模型像：

^{pr2}$

观点如下：

import json

from django.http import HttpResponse
from rest_framework import viewsets

from events.utils.elastic_db_utils import get_elastic_exact_search_from_query_dictionary
from events.serializers import EventSerializer
from events.models import Event


def list_events(request):
    all_events = Event.objects.all()
    serialized = [EventSerializer(event) for event in all_events]
    return HttpResponse(json.dumps(serialized))


class EventViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows users to be viewed or edited.
    """
    queryset = Event.objects.all().order_by('-received_time')
    serializer_class = EventSerializer

网址：

from django.conf.urls import url, include
from rest_framework import routers

from . import views

router = routers.DefaultRouter()
router.register(r'events', views.EventViewSet)


urlpatterns = [
    url(r"^$", views.search_elastic_db, name='search-elastic-db'),
    url(r"^events", views.list_events, name='list-events'),
    url(r'^api/', include(router.urls)),
]

我的视图集和^events端点都不起作用，都会得到相同的错误。我的模型在外壳中没有任何问题：

In [1]: from events.models import Event

In [2]: Event.objects.all()
Out[2]: [<Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>, <Event: Event object>]

Answer 1

我不认为您可以从您提供的代码中推断出确切的原因，但是根据错误消息，您可能正在其他地方使用代码，可能是在为Django的新版本编写的第三方库中。如前所述，remote_field属性被添加到djangov1.9中的Field中。（该属性显然是absent in v1.8。）

您的选择是：

1. 将您的项目升级到更新的Django版本。在
2. 反向导入第三方库，将有问题的Field更改为使用rel，并重写任何其他不兼容的代码。在
3. 将第三方库替换为支持Django v1.8的其他库。在

（我推荐第一个选项，因为在Django版本之间升级是well-documented）