Question

我的Rails应用程序（在Heroku上运行）有一个临时和生产环境。目前，staging.rb和production.rb中有很多内容我必须在每个文件中单独定义，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，我可以有效地将设置从production.rb导入到staging.rb，然后只是覆盖我希望为登台环境更改的设置？

Answer 1

我过去所做的是拥有一个包含共享设置的文件，然后在生产和登台环境文件中要求这样做。这很有效，因为它允许您在一个地方定义常用设置，然后在单个文件中定义唯一设置：

<强>配置/环境/ 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

<强>配置/环境/ 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

<强>配置/环境/ 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

Answer 2

我认为这有多好。这些是配置设置，并且可以单独设置。您实际上可以定义一个函数来传递配置。在该功能上，您可以设置默认值，但我不想这样做。在项目的生命周期中，您只能使用少于5个（或10个）的环境，因此您最多需要10个这样的文件，而这些文件不会一直在编辑。

删除staging.rb和production.rb之间的重复

2 个答案: