NoReverseMatch - Django 1.7 初学者教程 [英] NoReverseMatch - Django 1.7 Beginners tutorial

问题描述

我正在关注 Django 1.7.1 中的初学者教程，但出现此错误

I am following the begginers tutorial in Django 1.7.1 and am getting this error

Reverse for 'vote' with arguments '(5,)' and keyword arguments '{}' not found. 0 pattern(s) tried: [] `poll	emplatespolldetail.html, error at line 12`

经过一些研究，我发现有人问了类似的问题，有人建议他们应该从一般 url 中删除现金 $，因为 urlloader 只接受空字符串，而这不会给我错误 No Reverse Match，它把其他一切都搞砸了，每当我尝试访问任何其他 url 时，它会将我重定向到主 url，而无需删除现金 $ 我可以完美地继续访问这些 url.那么我做错了什么?

after a bit of research I found people asking similar question and someone suggested that they should remove the cash $ from the general url, because the urlloader just takes the empty string, while this doesn't gives me the error No Reverse Match, it messes everything else up, whenever I try to reach any other url it redirects me to the main url, while without removing the cash $ I can perfectly proceed to these urls. So what is it that I am doing wrong?

这里是项目网址:

urlpatterns = patterns('',
    url(r'^poll/', include('poll.urls', namespace="poll")),
    url(r'^admin/', include(admin.site.urls)),
)

和应用网址:

from django.conf.urls import patterns, url

from poll import views

urlpatterns = patterns('',
    #e.g. /poll/
    url(r'^$', views.IndexView.as_view(), name='index'),
    #e.g. /poll/5/
    url(r'^(?P<pk>d+)/$', views.DetailView.as_view(), name='detail'),
    #e.g. /poll/5/results/
    url(r'^(?P<pk>d+)/results/$', views.ResultsView.as_view(), name='results'),
    #e.g. /poll/5/votes/
    url(r'^(?P<question_id>d+)/votes/$', views.votes, name='votes'),
)

和意见:

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.views import generic
from poll.models import Question, Choice


class IndexView(generic.ListView):
    template_name = 'poll/index.html'
    context_object_name = 'latest_question_list'

    def get_queryset(self):
        """Return the last five published questions."""
        return Question.objects.order_by('-pup_date')[:5]


class DetailView(generic.DetailView):
    model = Question
    template_name = 'poll/detail.html'


class ResultsView(generic.DetailView):
    model = Question
    template_name = 'poll/results.html'


def votes(request, question_id):
    p = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = p.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay the question voting form.
        return render(request, 'poll/detail.html', {
            'question': p,
            'error_message': "You didn't select a choice.",
        })
    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('poll:results', args=(p.id,)))

另外我想这可能与操作 {%URL%} 和方法 post 的传递方式有关，所以这里是代码行错误中指定的模板文件 <form action="{% url 'poll:vote' question.id %}" method="post">

Also I guess it might be sth related to how the action {%URL%} and the method post are being passed, so here is the code line from the template file specified in the error <form action="{% url 'poll:vote' question.id %}" method="post">

如果您需要其他任何东西，请告诉我，并提前致谢

Please let me know if you need anything else, and thanks in advance

推荐答案

urls.py 中的 URL 名称是 votes 并且您正在搜索 poll:投票，修复它:

The URL name in urls.py is votes and you are searching for poll:vote, fix it:

<form action="{% url 'poll:votes' question.id %}" method="post">
                          HERE ^

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