在 Rails 3 中设置环境变量 (Devise + Omniauth)

问题描述

我一直试图弄清楚 Ryan Bates 如何在他的 Facebook 身份验证截屏，正在设置以下FACEBOOK_APP_ID"和FACEBOOK_SECRET"环境变量.

I've been trying to figure out how Ryan Bates, in his Facebook Authentication screencast, is setting the following "FACEBOOK_APP_ID" and "FACEBOOK_SECRET" environment variables.

provider :facebook, ENV['FACEBOOK_APP_ID'], ENV['FACEBOOK_SECRET']

周围有类似的问题，但没有我能够在 Rails 3.2.1 上工作的答案.

There are similar-ish questions around, but no answers that I've been able to get to work on Rails 3.2.1.

更新:

截至 2013 年 5 月，我处理 ENV 变量的首选方法是通过 Figaro gem

As of May 2013, my preferred way to handle ENV variables is via the Figaro gem

推荐答案

你可以看看 评论:

您可以直接在启动服务器的 shell 上设置环境变量:

You can either set environment variables directly on the shell where you are starting your server:

FACEBOOK_APP_ID=12345 FACEBOOK_SECRET=abcdef rails server

或者(相当hacky)，你可以在你的config/environments/development.rb中设置它们:

Or (rather hacky), you could set them in your config/environments/development.rb:

ENV['FACEBOOK_APP_ID'] = "12345";
ENV['FACEBOOK_SECRET'] = "abcdef";

另一种方式

但是我两者都不做.我会创建一个配置文件(比如 config/facebook.yml)，其中包含每个环境的相应值.然后将其作为常量加载到初始化程序中:

An alternative way

However I would do neither. I would create a config file (say config/facebook.yml) which holds the corresponding values for every environment. And then load this as a constant in an initializer:

development:
  app_id: 12345
  secret: abcdef

test:
  app_id: 12345
  secret: abcdef

production:
  app_id: 23456
  secret: bcdefg

config/initializers/facebook.rb

FACEBOOK_CONFIG = YAML.load_file("#{::Rails.root}/config/facebook.yml")[::Rails.env]

然后将代码中的 ENV['FACEBOOK_APP_ID'] 替换为 FACEBOOK_CONFIG['app_id'] 和 ENV['FACEBOOK_SECRET']FACEBOOK_CONFIG['secret'].

Then replace ENV['FACEBOOK_APP_ID'] in your code by FACEBOOK_CONFIG['app_id'] and ENV['FACEBOOK_SECRET'] by FACEBOOK_CONFIG['secret'].

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