TemplateDoesNotExist用于detail.html，但适用于index.html (Django教程第3部分)

Question

我正在尝试修复这个奇怪的错误，其中一个模板工作得非常好，而另一个模板却没有。我遵循Django教程，当涉及到我应该引发404错误的部分时，提示告诉我，detail.html在给定的源代码中不存在，即使它存在。

我的views.py文件：

from django.shortcuts import render
from django.http import Http404

from .models import Question

# Create your views here.

def index(request):
    latest_question_list = Question.objects.order_by('-pub_date')[:5]
    context = {'latest_question_list': latest_question_list}
    return render(request, 'polls/index1.html', context)

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

错误：

Internal Server Error: /polls/1/
Traceback (most recent call last):
  File "C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\core\handlers\base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\Scripts\mysite\polls\views.py", line 15, in detail
    return render(request, 'polls/detail.html', {'question': question})
  File "C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\shortcuts.py", line 19, in render
    content = loader.render_to_string(template_name, context, request, using=using)
  File "C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\template\loader.py", line 61, in render_to_string
    template = get_template(template_name, using=using)
  File "C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\template\loader.py", line 19, in get_template
    raise TemplateDoesNotExist(template_name, chain=chain)
django.template.exceptions.TemplateDoesNotExist: polls/detail.html

以下是网页上显示的内容：

Template-loader postmortem
    Django tried loading these templates, in this order:
    
    Using engine django:
    
    django.template.loaders.filesystem.Loader: C:\Users\Admin\AppData\Local\Programs\Python\Python38\Scripts\env\Scripts\mysite\polls\templates\polls\detail.html (Source does not exist)
    django.template.loaders.app_directories.Loader: C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\Scripts\mysite\polls\templates\polls\detail.html (Source does not exist)
    django.template.loaders.app_directories.Loader: C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\contrib\admin\templates\polls\detail.html (Source does not exist)
    django.template.loaders.app_directories.Loader: C:\Users\Admin\Appdata\Local\Programs\Python\Python38\Scripts\env\lib\site-packages\django\contrib\auth\templates\polls\detail.html (Source does not exist)

但是看：detail.html和index.html一起存在于这个位置！我已经检查了至少30次，index.html正在被调用(在/polls/)，但是另一个没有被调用，为什么？

detail.html文件的位置：

C:\Users\Admin\AppData\Local\Programs\Python\Python38\Scripts\env\Scripts\mysite\polls\templates\polls

我的项目目录如下：

Folder PATH listing
Volume serial number is 0EBA-8389
C:.
|   db.sqlite3
|   manage.py
|   tree.txt
|   
+---mysite
|   |   asgi.py
|   |   settings.py
|   |   urls.py
|   |   wsgi.py
|   |   __init__.py
|   |   
|   \---__pycache__
|           settings.cpython-38.pyc
|           urls.cpython-38.pyc
|           wsgi.cpython-38.pyc
|           __init__.cpython-38.pyc
|           
\---polls
    |   admin.py
    |   apps.py
    |   models.py
    |   tests.py
    |   urls.py
    |   views.py
    |   __init__.py
    |   
    +---migrations
    |   |   0001_initial.py
    |   |   __init__.py
    |   |   
    |   \---__pycache__
    |           0001_initial.cpython-38.pyc
    |           __init__.cpython-38.pyc
    |           
    +---templates
    |   \---polls
    |           detail.html.txt
    |           ffs.html.txt
    |           index.html.txt
    |           index1.html
    |           
    \---__pycache__
            admin.cpython-38.pyc
            apps.cpython-38.pyc
            models.cpython-38.pyc
            urls.cpython-38.pyc
            views.cpython-38.pyc
            __init__.cpython-38.pyc

我试过在S/O上研究每一个类似性质的问题，但没有任何帮助，大多数答案都要求更改settings.py，我真的不想这样做，因为我不应该在这个早期阶段就这样做，但我最终还是在TEMPLATES_DIRS中对模板的路径进行了硬编码(尽管它对其他人都没有用)：

    """
Django settings for mysite project.

Generated by 'django-admin startproject' using Django 3.1.2.

For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '(ovz73&%u#!99!#m_$s1q0j6a&ojdpe=1@1&fr)u84v*=j457g'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'polls.apps.PollsConfig',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

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 = 'mysite.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [r'C:\Users\Admin\AppData\Local\Programs\Python\Python38\Scripts\env\Scripts\mysite\polls\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',
            ],
        },
    },
]

WSGI_APPLICATION = 'mysite.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.1/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/3.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'Asia/Kolkata'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

STATIC_URL = '/static/'

还有一些其他的导入工具，我试过了，老实说，它不仅不起作用，而且超出了我的想象(我不到3天前就开始学习Django了)。

Answer 1

让我们来做几件事：

你能分享你的settings.py文件吗？

您能显示项目目录结构吗？

您能否尝试将settings.py中的模板更改为此？

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',
            ],
        },
    },
]