如何讓Rails讀取環境變量？

我已經安裝了Nginx和Unicorn，並試圖在Ubuntu 14.04上使用我的Rails 5應用程序。我在〜/ myproject的/配置/ secrets.yml一個文件，其中包含如何讓Rails讀取環境變量？

development: 
    secret_key_base: 547268978521e278fd572db969ce2d25cea9da7c6db4f7164942d02322177128704a4c76ed1f536dd7ac791b10ef0355b4542f21b128077657bdef156472ad81 

test: 
    secret_key_base: c1aae665f8ed25da55a457870526dcac878d5a3734ab2fd29b4ec32b4b31bbe2f16d3b72bf0cacf0c6c1c88e4862d35f45c2c10140d990388e5e2184459cd23e 

# Do not keep production secrets in the repository, 
# instead read values from the environment. 
production: 
    secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>

然而，當我重新啓動nginx的和麒麟並試圖訪問我的網頁，我在麒麟日誌得到這個錯誤...

E, [2017-04-09T22:37:34.736220 #11291] ERROR -- : app error: Missing `secret_key_base` for 'production' environment, set this value in `config/secrets.yml` (RuntimeError) 
E, [2017-04-09T22:37:34.736414 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/railties-5.0.2/lib/rails/application.rb:513:in `validate_secret_key_config!' 
E, [2017-04-09T22:37:34.736462 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/railties-5.0.2/lib/rails/application.rb:246:in `env_config' 
E, [2017-04-09T22:37:34.736491 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/railties-5.0.2/lib/rails/engine.rb:693:in `build_request' 
E, [2017-04-09T22:37:34.736515 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/railties-5.0.2/lib/rails/application.rb:521:in `build_request' 
E, [2017-04-09T22:37:34.736541 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/railties-5.0.2/lib/rails/engine.rb:521:in `call' 
E, [2017-04-09T22:37:34.736646 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:562:in `process_client' 
E, [2017-04-09T22:37:34.736680 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:658:in `worker_loop' 
E, [2017-04-09T22:37:34.736709 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:508:in `spawn_missing_workers' 
E, [2017-04-09T22:37:34.736738 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/unicorn-5.2.0/lib/unicorn/http_server.rb:132:in `start' 
E, [2017-04-09T22:37:34.736767 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/gems/unicorn-5.2.0/bin/unicorn:126:in `<top (required)>' 
E, [2017-04-09T22:37:34.736793 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/bin/unicorn:22:in `load' 
E, [2017-04-09T22:37:34.736818 #11291] ERROR -- : /home/rails/.gem/ruby/2.4.0/bin/unicorn:22:in `<top (required)>' 
E, [2017-04-09T22:37:34.736842 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/cli/exec.rb:74:in `load' 
E, [2017-04-09T22:37:34.736867 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/cli/exec.rb:74:in `kernel_load' 
E, [2017-04-09T22:37:34.736894 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/cli/exec.rb:27:in `run' 
E, [2017-04-09T22:37:34.736939 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/cli.rb:332:in `exec' 
E, [2017-04-09T22:37:34.736968 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run' 
E, [2017-04-09T22:37:34.736996 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command' 
E, [2017-04-09T22:37:34.737021 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch' 
E, [2017-04-09T22:37:34.737050 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/cli.rb:20:in `dispatch' 
E, [2017-04-09T22:37:34.737078 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start' 
E, [2017-04-09T22:37:34.737106 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/cli.rb:11:in `start' 
E, [2017-04-09T22:37:34.737136 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/exe/bundle:34:in `block in <top (required)>' 
E, [2017-04-09T22:37:34.737170 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/lib/bundler/friendly_errors.rb:100:in `with_friendly_errors' 
E, [2017-04-09T22:37:34.737200 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/gems/bundler-1.13.7/exe/bundle:26:in `<top (required)>' 
E, [2017-04-09T22:37:34.737230 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/bin/bundle:22:in `load' 
E, [2017-04-09T22:37:34.737253 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/bin/bundle:22:in `<main>' 
E, [2017-04-09T22:37:34.737266 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/bin/ruby_executable_hooks:15:in `eval' 
E, [2017-04-09T22:37:34.737280 #11291] ERROR -- : /usr/local/rvm/gems/ruby-2.4.0/bin/ruby_executable_hooks:15:in `<main>'

在我的項目目錄，/home/rails/myproject/.rbenv-vars，我已經定義

SECRET_KEY_BASE=secretbase 
APP_DATABASE_PASSWORD=apppassword

如何讓Rails的將這些值到環境中，或者是有一些其他地方我應該放這些價值？

來源

2017-04-10 Dave

使用export SECRET_KEY_BASE=secretbase殼
使用費加羅寶石，我用它
使用local_env.yml文件

此處瞭解詳情：rails environment variables

來源

2017-04-10 03:05:46 aisensiy

＃1，我在哪裏把在config/一個.yml和負載application.rb 3.使用寶石？對於＃2，還有什麼比在我的Gemfile中簡單包含那個寶石更多的事情。而對於＃3，我使用local_env.yml而不是config/secrets.xml？ – Dave

對於運行rails的命令＃1。＃2使用show創建一個配置文件，您可以在gem的Github中獲得指令。對於＃3你仍然需要它。 local_env.yml只是一種管理使用env變量的方法。 – aisensiy

要聲明環境變量，你可以將此添加到您的主文件夾中的SECRET_KEY_BASE=secretbase .bashrc或.bash_profile或在shell中導出SECRET_KEY_BASE=secretbase。

現在第二個點，用它在陽明文件，你應該改變你yml文件的擴展名yml.erb，如果你不希望使用任何其他寶石的this.because的Rails需要知道你使用的是Ruby代碼在陽明文件。 <%= %>'是一種在Rails中調用var和方法的方法，所以擴展名應該是yml.erb。

來源

2017-04-11 06:27:24

這是如何讀取env變量的導軌<%= ENV["SECRET_KEY_BASE"] %> 要解決您的錯誤，您應該提供SECRET_KEY_BASE的值。爲此，您可以使用以下任何一種方法： 1.使用shell簡單導出。 export SECRET_KEY_BASE=secretvalue 2.創建像figaro, dotenv

來源

2017-04-11 07:30:10

如何讓Rails讀取環境變量？

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