如何对抗未找到的django错误页面(404)
我正在使用教程创建这个django应用程序,我要完成第4部分https://docs.djangoproject.com/en/dev/intro/tutorial04/
该应用程序显示基本轮询,当您单击它时,它会显示一些选项和一个投票按钮.
问题是当我点击投票.它显示找不到页面.我认为问题是重定向,但我不知道在哪里确定问题.第一页是index.html,它显示问题,然后是detail.html,显示选项和问题.我知道当我点击投票时,它会回到应用程序URLconf,然后urlconf执行视图功能,视图功能执行结果.
我的detail.html是
<h1>{{ poll.question }}</h1>
{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
<form action="/myapp/{{ poll.id }}/vote/" method="post">
{% csrf_token %}
{% for choice in poll.choice_set.all %}
<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" />
<label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br />
{% endfor %}
<input type="submit" value="Vote" />
</form>
myapp里面的urls.py是:
from django.conf.urls import patterns, include, url
from django.contrib import admin
from django.conf import settings
from django.conf.urls import patterns, include, url
urlpatterns = patterns('myapp.views',
url(r'^$', 'index'),
url(r'^(?P<poll_id>\d+)/$', 'detail'),
url(r'^(?P<poll_id>\d+)/results/$', 'results'),
url(r'^(?P<poll_id>\d+)/vote/$', 'vote'),
)
我的views.py是:
from django.http import HttpResponse
from myapp.models import Poll ,choice
from django.template import Context, loader
from django.http import Http404
from django.shortcuts import render_to_response, get_object_or_404
from django.template import RequestContext
def index(request):
latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]
return render_to_response('myapp/index.html', {'latest_poll_list': latest_poll_list})
def results(request, poll_id):
p = get_object_or_404(Poll, pk=poll_id)
return render_to_response('myapp/results.html', {'poll': p})
def vote(request, poll_id):
p = get_object_or_404(Poll, pk=poll_id)
try:
selected_choice = p.choice_set.get(pk=request.POST['choice'])
except (KeyError, Choice.DoesNotExist):
# Redisplay the poll voting form.
return render_to_response('myapp/detail.html', {
'poll': p,
'error_message': "You didn't select a choice.",
}, context_instance=RequestContext(request))
else:
selected_choice.votes += 1
selected_choice.save()
# Always return an HttpResponseRedirect after successfully dealing
# with POST data. This prevents data from being posted twice if a
# user hits the Back button.
return HttpResponseRedirect(reverse('myapp.views.results', args=(p.id,)))
def detail(request, poll_id):
p = get_object_or_404(Poll, pk=poll_id)
return render_to_response('myapp/detail.html', {'poll': p},
context_instance=RequestContext(request))
我的results.html是:
<h1>{{ poll.question }}</h1>
<ul>
{% for choice in poll.choice_set.all %}
<li>{{ choice.choice_text }} -- {{ choice.votes }} vote{{ choice.votes|pluralize }}</li>
{% endfor %}
</ul>
<a href="/myapp/{{ poll.id }}/">Vote again?</a>
感谢你们对我的帮助 .这将是我的第一个突破性应用程序,如果我可以让它工作.
我的主URLconf是:
from django.conf.urls import patterns, include, url
from django.contrib import admin
from django.conf import settings
# Uncomment the next two lines to enable the admin:
# from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
url(r'^polls/', include('myapp.urls')),
url(r'^admin/', include(admin.site.urls)),
)
