settings.py

import os
import dj_database_url
from django.contrib import messages

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

SECRET_KEY = os.environ.get('SECRET_KEY')

OH_REDIRECT_URL = os.environ.get('OH_REDIRECT_URL')

ALLOWED_HOSTS = ["*"]

INTERNAL_IPS = ['127.0.0.1']

if os.environ.get('DEBUG') == "True":
    DEBUG = True
else:
    DEBUG = False

# Check if running on Heroku. If so, force SSL.
ON_HEROKU = os.getenv('ON_HEROKU', 'false').lower() == 'true'
if ON_HEROKU:
    SECURE_SSL_REDIRECT = True

INSTALLED_APPS = [
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    'app',
    'admin'
]


MIDDLEWARE = [
    'whitenoise.middleware.WhiteNoiseMiddleware',
    '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',
]


TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

MESSAGE_TAGS = {
    messages.ERROR: 'danger'
}

ROOT_URLCONF = 'app.urls'

LOGIN_URL = '/authorize/'

WSGI_APPLICATION = 'wsgi.application'

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

db_from_env = dj_database_url.config(conn_max_age=500)
DATABASES['default'].update(db_from_env)

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

STATIC_URL = '/static/'

STATIC_ROOT = os.path.join(BASE_DIR, 'static')