Reset the application by clearing out loaded controllers, views, actions, mailers, and so forth. This allows them to be loaded again without having to restart the server (WEBrick, FastCGI, etc.).

Source Code

# File dispatcher.rb, line 57
def reset_application!
  ActiveRecord::Base.reset_subclasses if defined?(ActiveRecord)

  Dependencies.clear
  ActiveSupport::Deprecation.silence do # TODO: Remove after 1.2
    Class.remove_class(*Reloadable.reloadable_classes)
  end

  ActiveRecord::Base.clear_reloadable_connections! if defined?(ActiveRecord)
end