ember.js - getting all form values

signIn.hbs

{{input type="text" value=username label="username"}}
{{input type="password" value=password label="password"}}

SignInRoute

App.SignInRoute = Ember.Route.extend
  actions:
    authenticate: ->
      @get('adapter').login(@get 'currentUser')
      .then =>
        @transitionTo 'index'
      .then null, =>
        @set 'currentUser.error', 'Invalid username or password'

  model: ->
    @get 'currentUser'