我正在尝试开始使用 Django，并在尝试访问我定义的 url 时收到以下 TypeError：'object is not iterable'
这是代码：
模型.py
from django.db import models
from django.contrib.auth.models import User
from pubs.models import Pub
# Create your models here.
class Event (models.Model):
name = models.CharField(max_length=200)
description = models.CharField(max_length=500)
admin = models.ForeignKey(User)
def __str__(self):
return self.name
class Event_Instance (models.Model):
Event = models.ForeignKey(Event)
location = models.ForeignKey(Location)
additional_description = models.CharField(max_length=200)
display_desc = models.BooleanField(default='true')
time = models.DateTimeField('Event Date & Time')
def __str__(self):
return self.Event.name
网址.py
from django.conf.urls import patterns, url
from events import views
urlpatterns = patterns('',
url(r'^(?P<event_id>\d+)/instance/(?P<event_instance_id>\d+)/$',views.event_detail, name='event_detail'),
)
视图.py
from django.shortcuts import render
from events.models import Event, Event_Instance
from django.http import HttpResponse, Http404
# Create your views here.
def event_detail (request, event_id, event_instance_id):
try:
event_instance = Event_Instance.objects.get(pk = event_instance_id)
except Event_Instance.DoesNotExist:
raise Http404
return render(request, 'events/event_instance.html', event_instance)
当我运行Event_Instance.objects.get(pk = 1)它时，它会显示我想要的东西，所以它一定与我传入的参数有关，或者我传入的参数不止一个？
我错过了一些非常简单的东西吗？
谢谢