rails 下自定义配置变量

APP_CONFIG = YAML.load_file("#{Rails.root}/config/config.yml")[Rails.env]#rails3MyApp::Application.config.custom_config_variable = :my_config_settingorRails.configuration.custom_config_variable = :my_config_setting#need initialization files or the environment.rbYourApp::Application.configure do  config.something = foo  config.....  config....  .  config....end

defaults: &defaults  audiocast_uri_format: http://blablalba/blabbitybla/yaddadevelopment:  <<: *defaultstest:  <<: *defaultsproduction:  <<: *defaults

APP_CONFIG = YAML.load_file("#{RAILS_ROOT}/config/config.yml")[RAILS_ENV]uri_format = APP_CONFIG['audiocast_uri_format']

APP_CONFIG = YAML.load(ERB.new(File.new(File.expand_path('../config.yml', __FILE__)).read).result)[Rails.env]