Question

Here’s the code in CoffeeScript:

class this.User extends Backbone.Model
  initialize: -> 
    @access_token
    @cur_video_id_playing
    @logged_in = 0
    @username
    this.bind "change:username", () -> alert this.get(username) 

this.user = new User;

When I’m in the developer console and call

user.username = "newname"

The alert doesn’t trigger.
What am I doing wrong?

Thanks!

Answer 1

You’ve got to use Model::set:

user.set 'username', 'newname'

Or, using an object literal:

user.set username: 'newname'

The username will actually be stored in user.attributes.username. In your change listener, you should access the username using Model::get; something like:

@on 'change:username', -> alert @get 'username'