Django 2.0 reusable apps - TemplateDoesNotExist at /polls/ - django

Question

Python 3, Django 2.0
I just got to the end of the official Django tutorial, and I'm working on the advanced portion - "How to write reusable apps"
It seems like I was at least partially successful, I can access the Questions and Choices through the admin interface, but when I try to display the http://127.0.0.1:8000/polls/ I get this error: TemplateDoesNotExist at /polls/1/
I get a similar error for trying to access a detail page, at http://127.0.0.1:8000/polls/1/
I looked through all the troubleshooting questions I could, and my main question is - how can you access templates that are packaged into an app? The thing I see going wrong is that Django is trying to find the app templates inside the main project directories(ie: /tutorial/templates/polls/detail.html), but they should be "inside" the module I imported from pip.
Are you actually supposed to package the templates into apps this way? I tried throwing the template files back into tutorial/templates/polls/ and it works just fine, but this goes against what I think should be "reuseability" because then the packaged app won't have it's own templates.
The answers I was able to find seem to be more for older versions of Django, and used a TEMPLATE_LOADERS setting... Anyone know if there is a way to set that in Django 2?
Directory structure:
django-polls/
LICENSE
manifest.in
README.rst
setup.py
/dist
/docs
/polls
admin.py
apps.pyo
__init__.py
models.py
tests.py
urls.py
views.py
/build
/migrations
/static
/polls
/images
style.css
/templates
/polls
detail.html
index.html
results.html
The project structure is like this:
tutorial/
/mysite (settings.py, etc)
/templates
/admin
base_site.html
index.html
/venv (my virtualenv directory)
db.sqlite3
manage.py
settings.py
"""
Django settings for mysite project.
Generated by 'django-admin startproject' using Django 2.0.
For more information on this file, see
https://docs.djangoproject.com/en/2.0/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.0/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/2.0/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '*e7#6=f$r(cu_p#7#*s+6t9r^ouio$x&06s61-0u(n1mo370c6'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = [
# 'polls.apps.PollsConfig',
'polls',
'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': [os.path.join(BASE_DIR, 'templates', 'polls')],
'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',
],
},
},
]
WSGI_APPLICATION = 'mysite.wsgi.application'
# Database
# https://docs.djangoproject.com/en/2.0/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/2.0/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/2.0/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'America/Chicago'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.0/howto/static-files/
STATIC_URL = '/static/'

Answer 1

The issue here was case: the file had been named manifest.in, when it needed to be capitalized as MANIFEST.in. Happy holidays!

Answer 2

Remember to include your templates directory in your MANIFEST.in file. See step 6 of packaging your app for more info.