为什么我无法加载index.html？

Question

我遇到了一个错误 TemplateDoesNotExist at/polls/ poll我的索引为http://localhost:8000/polls/。 回溯说

回溯：

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: poll‌​s/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: poll‌​s/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='poll‌​s/index.html'),name='app_index'), 
     url(r'^form$', views.form_test), 
    ] 

我真的不明白为什么的index.html无法加载。我认为这部分def索引（请求）：views.py阅读index.html ...所以，我该如何解决这个？

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'), 
) 

Answer 1

确保您的模板结构是：

project_root/ 
      templates/ 
        polls/ 
         index.html 

它将工作。

此外，请确保您使用的polls所有的模板，我可以在问题中看到的，在一个视图中，其polls和另一种观点认为，其poll，让他们一样。