The Rails Initialization Process

Rails初期化処理の解説、これ読んどいたら後々役に立ちそう！　てかこのサイトすごく役に立ちそうなことたくさん載ってそうなのに見たことなかったな…　http://t.co/1ksC0ro9

when 'server' # Change to the application's path if there is no config.ru file in current dir. # This allows us to run script/rails server from other directories, but still get # the main config.ru and properly set the tmp directory. Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exists?(File.expand_path("config.ru")) require 'rails/commands/server' Rails::Server.new.tap { |server| # We need to require application after the server sets environment, # otherwise the --environment option given to the server won't propagate. require APP_PATH Dir.chdir(Rails.application.root) server.start }

Full article: http://guides.rubyonrails.org/initialization.html