Question

我正在关注Django Tutorial的官方网页。我是本教程的第4部分。在编写了results.html，detail.html并根据它的文档更新了视图后，我在尝试从浏览器访问/ polls / 1时收到了下面提到的错误。我无法找到错误的位置，因为一切似乎都是根据教程。 / polls /和民意调查/ 1 /投票

没有错误

/ polls / 1 /

的NoReverseMatch

反向投票＆＃39;有参数＆＃39;（＆＃39;＆＃39;，）＆＃39;和关键字参数＆＃39; {}＆＃39;未找到。尝试了1种模式：[＆＃39;民意调查/（？P [0-9] +）/投票/ $＆＃39;]

我的民意调查/ urls.py文件

from django.conf.urls import url

from . import views

app_name = 'polls'
url patterns = [
    url(r'^$',views.index,name='index'),
    url(r'^(?P<question_id>[0-9]+)/$', views.detail, name='detail'),
    url(r'^(?P<question_id>[0-9]+)/results/$', views.results, name='results'),                                       
    url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
]

我的detail.html文件是

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

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

<form action ="{% url 'polls:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.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>

我的results.html如下

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

<ul>
{% for choice in question.choice_set.all %}
    <li>{{ choice.choice_text }} -- {{choice.votes }} vote{{ choice.votes|pluralize }}</li>
{% endfor %}
</ul>

<a href="{% url 'polls:detail' question.id %}">Vote again?</a>

和我的民意调查/ views.py文件是

from django.shortcuts import get_object_or_404, render

from django.http import Http404
from django.http import HttpResponseRedirect, HttpResponse
from django.urls import reverse
from django.template import loader

from .models import Choice, Question

def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {
        'latest_question_list': latest_question_list,
    }
    return render(request, 'polls/index.html', context)

def detail(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls/detail.html', {'queston':question})

def results(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls/results.html', {'question': question})

def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except(KeyError, Choice.DoesNotExist):
        #Redisplay the question voting form.
        return render(request, 'polls/detail.html', {
            'question': question,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

我的root / urls.py文件是

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

urlpatterns = [
    url(r'^polls/',include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

Answer 1

在detail视图中呈现的上下文中存在拼写错误。它是question而不是queston。

换句话说，您将question对象作为queston传递给detail.html模板。

return render(request, 'polls/detail.html', {'queston': question})

应该是：

return render(request, 'polls/detail.html', {'question': question})

Django 1.10 NoReverseMatch at / polls / 1 /同时遵循官方django教程第4部分

1 个答案: