Django Rest Framework找不到节流范围

Question

根据http://www.django-rest-framework.org/api-guide/throttling/，我在DRF设置中添加了以下设置：

REST_FRAMEWORK = {
'DEFAULT_THROTTLE_CLASSES': (
    'rest_framework.throttling.AnonRateThrottle',
    'rest_framework.throttling.UserRateThrottle',
    'project.api.throttles.AppEventRateThrottle',
),
'DEFAULT_THROTTLE_RATES': { # 86,400 seconds in a day
    'app_events': '10000/day',
    'anon': '10000/day',
    'user': '10000/day',
},
'DEFAULT_AUTHENTICATION_CLASSES': (
    'rest_framework.authentication.BasicAuthentication',
    'rest_framework.authentication.TokenAuthentication',
),
'EXCEPTION_HANDLER': 'project.api.exception_handler.custom_exception_handler',
}

这是简单的AppEventRateThrottle类，位于project.api.throttles 中

from rest_framework.throttling import AnonRateThrottle
class AppEventRateThrottle(AnonRateThrottle):
     scope = 'app_events'

我试图节流的基于简单函数的API视图：

from project.api.throttles import AppEventRateThrottle
@api_view(['POST'])
@throttle_classes([AppEventRateThrottle])
def grouped_event_create(request):
    return Response("Hello, world!")

然而，每次我调用API时，我都会得到

  File "/usr/local/lib/python3.4/dist-packages/rest_framework/throttling.py", line 94, in get_rate
raise ImproperlyConfigured(msg)
 django.core.exceptions.ImproperlyConfigured: No default throttle rate set for 'app_events' scope

它似乎在DEFAULT_THROTTLE_RATES字典中找不到"app_events"键，但它有明确的定义。

Answer 1

将@throttle_classes([AppEventRateThrottle])更改为@throttle_classes([AppEventRateThrottle,])如何？