Manage javascript code in large rails app

loader.js.coffee

NS.Loader =
  exec: (controller, action="init") ->
    ns = NS
    controller = _.capitalize(_.singularize(controller))
    ns[controller][action]() if controller? and ns[controller]? and ns[controller][action]?
    return

  init: () ->
    ## load underscore string
    _.mixin(_.string.exports())
    
    ## find out controller and action
    body = $(document.body)
    controller = body.data("controller")
    action = body.data("action")

    ## load by order
    @exec("common")             ## NS.Common.init() - application-wide code
    @exec(controller)           ## NS.User.init()  - controller-wide code
    @exec(controller, action)   ## NS.User.show()  - action-specific code

jQuery ->
  NS.Loader.init()