python - 轻量级 Django : settings. ALLOWED_HOSTS 设置为环境变量

Question

我正在关注来自 O'Reilly 的 Julia Elman 和 Mark Lavin 的轻量级 Django。在第 1 章中，我无法将 ALLOWED_HOSTS 设置为环境变量。

当我运行 python hello.py runserver 时，我一直有 CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False

这是我的hello.py:

import os
import sys
from django.conf import settings

DEBUG = os.environ.get('DEBUG', 'on') == 'on'
SECRET_KEY = os.environ.get('SECRET_KEY', os.urandom(32))
ALLOWED_HOSTS = os.environ.get('ALLOWED_HOSTS', 'localhost').split(',')

settings.configure(
    DEBUG=DEBUG,
    SECRET_KEY=SECRET_KEY,
    ROOT_URLCONF=__name__,
    MIDDLEWARE_CLASSES=(
        'django.middleware.common.CommonMiddleware',
        'django.middleware.csrf.CsrfViewMiddleware',
        'django.middleware.clickjacking.XFrameOptionsMiddleware',
    ),
)

from django.conf.urls import url
from django.core.wsgi import get_wsgi_application
from django.http import HttpResponse

def index(request):
    return HttpResponse('Hello World')

urlpatterns = (
    url(r'^$', index),
)

application = get_wsgi_application()

if __name__ == "__main__":
    from django.core.management import execute_from_command_line
    execute_from_command_line(sys.argv)

我已经完成了 export DEBUG=off 和 export ALLOWED_HOSTS=localhost,example.com我确定我有环境变量:

$printenv DEBUG
off
$printenv ALLOWED_HOSTS
localhost,example.com

谁能告诉我哪里出了问题？

Answer 1

您忘记将 ALLOWED_HOSTS 参数添加到 settings.configure() 调用中。