为什么我无法加载索引.html？

我得到一个错误， TemplateDoesNotExists at/polls/当我 http://localhost:8000/polls/时投票 s/index.html. 追溯说

追踪：

File "/Users/XXX/django/django/core/handlers/exception.py" in inner
35.             response = get_response(request)
File "/Users/XXX/django/django/core/handlers/base.py" in _get_response
160.                 response = self.process_exception_by_middleware(e, request)
File "/Users/XXX/django/django/core/handlers/base.py" in _get_response
158.                 response = response.render()
File "/Users/XXX/django/django/template/response.py" in render
106.             self.content = self.rendered_content
File "/Users/XXX/django/django/template/response.py" in rendered_content
81.         template = self.resolve_template(self.template_name)
File "/Users/XXX/django/django/template/response.py" in resolve_template
63.             return select_template(template, using=self.using)
File "/Users/XXX/django/django/template/loader.py" in select_template
47.         raise TemplateDoesNotExist(', '.join(template_name_list), chain=chain)
Exception Type: TemplateDoesNotExist at /polls/
Exception Value: poll‌s/index.html
Traceback:
File "/Users/XXX/django/django/core/handlers/exception.py" in inner
35.             response = get_response(request)
File "/Users/XXX/django/django/core/handlers/base.py" in _get_response
160.                 response = self.process_exception_by_middleware(e, request)
File "/Users/XXX/django/django/core/handlers/base.py" in _get_response
158.                 response = response.render()
File "/Users/XXX/django/django/template/response.py" in render
106.             self.content = self.rendered_content
File "/Users/XXX/django/django/template/response.py" in rendered_content
81.         template = self.resolve_template(self.template_name)
File "/Users/XXX/django/django/template/response.py" in resolve_template
63.             return select_template(template, using=self.using)
File "/Users/XXX/django/django/template/loader.py" in select_template
47.         raise TemplateDoesNotExist(', '.join(template_name_list), chain=chain)
Exception Type: TemplateDoesNotExist at /polls/
Exception Value: poll‌s/index.html

views.py 就像

from django.shortcuts import render
from django.urls import reverse_lazy
from django.utils.html import mark_safe
from .models import Question
from django.http import HttpResponse
from django.shortcuts import Http404
from django.shortcuts import get_object_or_404,redirect
from .models import Choice
from django.views.generic import TemplateView
from django.views.generic import DetailView
from django.views.generic import ListView
from .forms import MyForm
from .forms import VoteForm
from django.views.generic import FormView
from django.views.generic.detail import SingleObjectMixin
from django.shortcuts import resolve_url
def index(request):
return render(request,'polls/index.html',{
'questions': Question.objects.all(),
})
def vote(request,pk):
question = get_object_or_404(Question,pk=pk)
try:
selected_choice = question.choice_set.get(pk=request.POST['choice'])
except (KeyError,Choice.DoesNotExist):
return render(request,'poll/detail.html',{
'question':question,
'error_message':"You didn't select a choice",
})
else:
selected_choice.votes += 1
selected_choice.save()
return redirect('index')
return redirect('poll_results', pk)
# pass
def results(request,pk):
obj = get_object_or_404(Question,pk=pk)
return render(request,'polls/results.html',{
'question':obj,
})
class FormTest(FormView):
form_class = MyForm
template_name = 'polls/form.html'
success_url = reverse_lazy('polls:index')
form_test = FormTest.as_view()
class Detail(SingleObjectMixin,FormView):
model = Question
form_class = VoteForm
context_object_name = 'question'
template_name = 'polls/detail.html'
def get(self, request, *args, **kwargs):
self.object = self.get_object()
return super().post(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
self.object = self.get_object()
return super().post(request, *args, **kwargs)
def get_form_kwargs(self):
kwargs = super().get_form_kwargs()
kwargs['question'] = self.object
return kwargs
def form_valid(self, form):
form.vote()
return super().form_valid(form)
def get_success_url(self):
return resolve_url('polls:results',self.kwargs['pk'])
detail = Detail.as_view()

urls.py 是

from django.conf.urls import url
from django.views.generic import TemplateView
from . import views
app_name="polls"
urlpatterns = [
url(r'(?P<pk>d+)/$', views.detail, name='poll_detail'),
url(r'(?P<pk>d+)/vote$', views.vote, name='poll_vote'),
url(r'(?P<pk>d+)/results$', views.results, name='poll_results'),
url(r'^$',TemplateView.as_view(template_name='poll‌s/index.html'),name='app_index'),
url(r'^form$', views.form_test),
]

我真的不明白为什么索引.html无法加载。我认为这部分定义索引(请求(：views.py 读取索引.html...那么，我该如何解决这个问题呢？

我 setting.py 是

"""
Django settings for djangostudy project.
Generated by 'django-admin startproject' using Django 2.0.dev20170803012132.
For more information on this file, see
https://docs.djangoproject.com/en/dev/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/dev/ref/settings/
"""
import os
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/dev/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '****************'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = []

# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'polls',
'bootstrap3',
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'djangostudy.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'templates')],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
# 'app.apptemplates.load_setting',
],
# 'libraries':{
# 'my_templatetag': 'djangostudy.templates',
#
# }
},
},
]
TEMPLATE_DIRS = (
os.path.join(BASE_DIR, 'templates'),
)
WSGI_APPLICATION = 'djangostudy.wsgi.application'

# Database
# https://docs.djangoproject.com/en/dev/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}

# Password validation
# https://docs.djangoproject.com/en/dev/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]

# Internationalization
# https://docs.djangoproject.com/en/dev/topics/i18n/
LANGUAGE_CODE = 'ja'
TIME_ZONE = 'Asia/Tokyo'
USE_I18N = True
USE_L10N = True
USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/dev/howto/static-files/
STATIC_URL = '/static/'
STATICFILES_DIRS = (
os.path.join(BASE_DIR, 'static'),
)

确保模板结构为：

project_root/
templates/
polls/
index.html

它会起作用。

另外，请确保您对所有模板都使用polls，我可以看到有问题的，在一个视图中，它的polls，在另一个视图中，它的poll，使它们相同。

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