Question

我是Django和Python的新手。我尝试在其网站上的官方教程的帮助下创建一个项目。现在我进入第6部分（“自定义应用的外观”），我遇到了问题。当我运行服务器（python manage.py runserver时，一切都很好，我什至可以在这里http://127.0.0.1:8000/polls/1/results/投票，但是当我尝试前往http://localhost:8000/polls/时，我遇到了这样的问题enter image description here 。有人可以解释如何解决这个问题吗？我应该在代码中检查什么？我所做的一切与本教程相同。任何帮助将不胜感激！

1）... \ mysite \ polls \ views.py

from __future__ import unicode_literals
from django.shortcuts import get_object_or_404, render
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.views import generic
from django.utils import timezone
from .models import Choice, Question

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

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

class DetailView(generic.DetailView):
    model = Question
    template_name = 'polls/detail.html'
    def get_queryset(self):
        """
        Excludes any questions that are not published yet.
        """
        return Question.objects.filter(pub_date__lte=timezone.now())

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

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.DoesNotExis):
        return render(request, 'polls/detai.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,)))

2）... \ mysite \ polls \ models.py

from __future__ import unicode_literals
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
import datetime
from django.utils import timezone

def was_published_recently(self):
    now = timezone.now()
    return now - datetime.timedelta(days=1) <= self.pub_date <= now

@python_2_unicode_compatible
class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')

    def __str__(self):
        return self.question_text

    def was_published_recently(self):
        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)


@python_2_unicode_compatible
class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)
    def __str__(self):
        return self.choice_text

3）... \ mysite \ polls \ urls.py

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^$', views.IndexView.as_view(), name='index'),
    url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
    url(r'^(?P<pk>[0-9]+)/results/$', views.ResultsView.as_view(), name='results'),
    url(r'^(?P<question_id>[0-9]+)/vote/$', views.vote, name='vote'),
]

4）... \ mysite \ mysite \ urls.py

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),
]

配置不当的Django

0 个答案: