rails小贴士

让cookie对子域名也管用,customized session cookie domain

#production.rb
if config.action_controller.session
  config.action_controller.session[:domain] = '.example.com'
else
  config.action_controller.session = { :domain => '.example.com' }
end

配置javascript/image/css 等路径

#production.rb
ActionController::Base.asset_host = "assets.example.com"

<%=javascript_include_tag "jquery"%>
就会生成 <script src="http://assets.example.com/javascripts/jquery.js?1251861242" type="text/javascript"></script>

从yml中load配置参数

#config/test.yml
development:
  access_key: afasfasdsa
  secret_key: 5/W9zw
test:
  access_key: afasfasdsa
  secret_key: 5/W9zw
production:
  access_key: afasfasdsa
  secret_key: 5/W9zw

load from initializer

#config/initializers/app_config.rb
TEST_CONFIG = YAML.load_file(File.join(Rails.root, "config", "test.yml"))[RAILS_ENV].symbolize_keys