app.js.coffee

define ['backbone', 'marionette', 'config/backbone/auth'], (Backbone, Marionette, Auth) ->
  App = new Marionette.Application

  App.auth = new Auth

  App.auth.login
    email: 'email@example.org'
    password: 'password'

  App.auth.on 'logged_in', ->
    console.log "Authenticated!"
    App.on "start", ->
      require ["backbone/apps/layout/layout_app"], ->
        App.module("LayoutApp").start()

  App

auth.js.coffee

define ['backbone', 'cookies'], (Backbone, cookies) ->
  class AuthModel extends Backbone.Model
    defaults:
      cookieName: '_token'
      token: undefined
      authenticated: false
      tokenUrl: '/api/v1/sessions'

    initialize: ->
      @checkCookie()
      @_configureAjax()

    checkCookie: ->
      token = cookies.get @get('cookieName')
      token = undefined if !token?
      @set {
        authenticated: !!token
        token: token
      }
      @trigger 'logged_in', @get('token') if token?

    login: (credentials) ->
      cookies.set(@get('cookieName'), '123321123')
      @checkCookie()

    logout: ->
      cookies.expire @get('cookieName')
      @set {
        token: undefined
        authenticated: false
      }
      @trigger 'logout'

    _configureAjax: ->
      auth = @
      Backbone.$.ajaxSetup
        beforeSend: (jqXHR) ->
          if auth.get('authenticated')
            jqXHR.setRequestHeader 'Authorization', 'Token token=' + auth.get('token')