ruby-on-rails - 删除 staging.rb 和 production.rb 之间的重复

Question

我的 Rails 应用程序(在 Heroku 上运行)有一个暂存和生产环境。目前，我必须在每个文件中分别定义 staging.rb 和 production.rb 中的很多内容，例如:

  # Code is not reloaded between requests
  config.cache_classes = true

  # Full error reports are disabled and caching is turned on
  config.consider_all_requests_local       = false
  config.action_controller.perform_caching = true

  # Disable Rails's static asset server (Apache or nginx will already do this)
  config.serve_static_assets = false

  # Compress JavaScripts and CSS
  config.assets.compress = true

  # Don't fallback to assets pipeline if a precompiled asset is missed
  config.assets.compile = false

  # Generate digests for assets URLs
  config.assets.digest = true

这不是DRY。有没有一种优雅的方法可以有效地将设置从 production.rb 导入到 staging.rb，然后覆盖我希望为暂存环境更改的设置？

Answer 1

我过去所做的是拥有一个包含共享设置的文件，然后在生产和暂存环境文件中需要它。这很有效，因为它允许您在一个地方定义通用设置，然后在各个文件中定义独特的设置:

config/environments/shared_production.rb

MyApp::Application.configure do
  # Code is not reloaded between requests
  config.cache_classes = true

  # Full error reports are disabled and caching is turned on
  config.consider_all_requests_local       = false
  config.action_controller.perform_caching = true
end

config/environments/production.rb

require Rails.root.join('config/environments/shared_production')

MyApp::Application.configure do
  # Raise exception on mass assignment protection for Active Record models
  config.active_record.mass_assignment_sanitizer = :logger

  # Url to be used in mailer links
  config.action_mailer.default_url_options = { :host => "production.com" }
end

config/environments/staging.rb

require Rails.root.join('config/environments/shared_production')

MyApp::Application.configure do
  # Raise exception on mass assignment protection for Active Record models
  config.active_record.mass_assignment_sanitizer = :strict

  # Url to be used in mailer links
  config.action_mailer.default_url_options = { :host => "mysite-dev.com" }
end