Django错误u"polls"；不是注册的名称空间 [英] Django Error u"'polls" is not a registered namespace

问题描述

昨天我正在使用本教程来开发我的第一个应用程序.这是一个民意测验的应用程序. 第一页显示问题，当您单击该问题时，它会显示您可以对其进行投票的选择.

Yesterday I was working on my first app using this tutorial. It's a Poll and Choice app. The first page displays the question and when you click on the question it's suppose to display choices which you can vote on them.

昨天有很多很棒的人帮助我，并告诉我使用命名空间.我已经阅读了命名空间教程，并尝试运用我的知识 到该情况，但到目前为止还无法正常工作.

I had great people who helped me yesterday and told me to use namespace. I've read the namespace tutorial and tried to apply my knowledge to the scenario but it isn't working so far.

这是我点击首页上的问题时的错误.

This is my error when I click on the questions which is the first page.

 NoReverseMatch at /polls/5/

 u"'polls" is not a registered namespace

 Request Method:    GET
 Request URL:   http://127.0.0.1:8000/polls/5/
 Django Version:    1.4.3
 Exception Type:    NoReverseMatch
 Exception Value:   

 u"'polls" is not a registered namespace

 Exception Location:    C:\hp\bin\Python\Lib\site-packages\django\template\defaulttags.py in render, line 424
 Python Executable:     C:\hp\bin\Python\python.exe
 Python Version:    2.5.2
 Python Path:   

 ['C:\\djcode\\mysite',
  'C:\\hp\\bin\\Python\\python25.zip',
  'C:\\hp\\bin\\Python\\DLLs',
  'C:\\hp\\bin\\Python\\lib',
  'C:\\hp\\bin\\Python\\lib\\plat-win',
  'C:\\hp\\bin\\Python\\lib\\lib-tk',
  'C:\\hp\\bin\\Python',
  'C:\\hp\\bin\\Python\\lib\\site-packages',
  'C:\\hp\\bin\\Python\\lib\\site-packages\\win32',
  'C:\\hp\\bin\\Python\\lib\\site-packages\\win32\\lib',
  'C:\\hp\\bin\\Python\\lib\\site-packages\\Pythonwin']

 Server time:   Fri, 15 Feb 2013 21:04:10 +1100
 Error during template rendering

 In template C:\djcode\mysite\myapp\templates\myapp\detail.html, error at line 5
 u"'polls" is not a registered namespace
 1  <h1>{{ poll.question }}</h1>
 2  
 3  {% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
 4  
 5  {% url 'polls:vote' poll.id %}
 6  {% csrf_token %}
 7  {% for choice in poll.choice_set.all %}
 8  <input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" />
 9  <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br />
 10     {% endfor %}
 11     <input type="submit" value="Vote" />
 12     </form>

现在，我知道问题隐藏在detail.html，我的主要url和名为myapp URLCONF和views.py的应用程序中

Now I know the problems are hidden in detail.html, my main urls and my app called myapp URLCONF and views.py

现在我的主要URLconf是: C:\ djcode \ mysite \ mysite

Now My main URLconf are: C:\djcode\mysite\mysite

 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'^polls/', include('myapp.urls', namespace='polls')),                   
     url(r'^admin/', include(admin.site.urls)),
 )

我的应用程序文件夹称为myapp，这是myapp URLconf: C:\ djcode \ mysite \ myapp

My app folder is called myapp and this is myapp URLconf: C:\djcode\mysite\myapp

 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'),


)

myapp中的views.py是:

My views.py inside myapp are:

 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detail.html C:\ djcode \ mysite \ myapp \ templates \ myapp

My detail.html C:\djcode\mysite\myapp\templates\myapp

 <h1>{{ poll.question }}</h1>

 {% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}

 {% url 'polls:vote' poll.id %}
 {% 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>

推荐答案

 from django.conf.urls import patterns, include, url
 from django.contrib import admin
 from django.conf import settings



 urlpatterns = patterns('myapp.views',
     url(r'^$', 'index', name="index"),
     url(r'^(?P<poll_id>\d+)/$', 'detail', name="detail"),
     url(r'^(?P<poll_id>\d+)/results/$', 'results', name="results"),
     url(r'^(?P<poll_id>\d+)/vote/$', 'vote', name="vote"),
)

----------------------------------    

 <h1>{{ poll.question }}</h1>

 {% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}

 <form method="post" action="{% url myapp:vote poll.id %}">
 {% 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>

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