问题描述
在过去的几天里,我一直试图在 django 中使用环境变量,但这似乎是不可能的。我制作了我的 .env 文件并将它与所有变量一起放在我的项目目录中。当我运行服务器时,它说即使我正在加载我的环境变量,我的密钥也没有定义。我不知道我在这个项目中做错了什么,因为这种方法在我制作的另一个方法中效果很好。
如果有人能找到错误,我将不胜感激。
settings.py
"""
Django settings for server project.
Generated by 'django-admin startproject' using Django 3.1.6.
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/
"""
import django_heroku
from pathlib import Path
import os
import dj_database_url
import dotenv
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
dotenv_file = os.path.join(BASE_DIR,"env")
if os.path.isfile(dotenv_file):
dotenv.load_dotenv(dotenv_file)
# 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 = os.environ.get("SECRET_KEY")
# Security WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = ['postsingle.herokuapp.com','127.0.0.1']
# Application deFinition
INSTALLED_APPS = [
'django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','rest_framework','posts','corsheaders','knox','accounts',]
REST_FRAMEWORK = {
'DEFAULT_AUTHENTICATION_CLASSES':
('knox.auth.TokenAuthentication',)
}
MIDDLEWARE = [
'corsheaders.middleware.CorsMiddleware','django.middleware.security.SecurityMiddleware','whitenoise.middleware.WhiteNoiseMiddleware','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 = 'server.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',],},]
Wsgi_APPLICATION = 'server.wsgi.application'
# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql','NAME': os.environ.get("DATABASE_NAME"),'USER': os.environ.get("DATABASE_USER"),'PASSWORD': os.environ.get("DATABASE_PASSWORD"),'HOST': os.environ.get("DATABASE_HOST"),'PORT': os.environ.get("DATABASE_PORT"),}
}
db_from_env = dj_database_url.config(conn_max_age=600)
DATABASES['default'].update(db_from_env)
# 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 = 'UTC'
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/'
STATIC_ROOT = os.path.join(BASE_DIR,'staticfiles')
STATICFILES_Dirs = [
os.path.join(BASE_DIR,'static')
]
STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesstorage'
CORS_ORIGIN_WHITELIST = [
'http://localhost:3000','https://postsingle.herokuapp.com'
]
django_heroku.settings(locals())
编辑 我设法通过从 settings.py 中的 dotenv 部分中删除所有代码并仅放置 dotenv.load_dotenv() 来解决所有问题。我不知道为什么会这样,但我因为太高兴而几乎要哭了。
解决方法
settings.py 文件中,SECRET_KEY = os.environ.get("SECRET_KEY") 不能为空, 给另一个像这样的项目密钥
SECRET_KEY = "你的密钥"