In Ember, how to defer readiness, and put AJAX result into a Controller?

Question

I understand that Ember.Application now has deferReadiness that lets me wait for the return of an AJAX call before initializing the app. However, in the example in the api

Answer 1

You can reopen your controller in the $.getJSON callback to set the response value in the token property. Assuming you have an endpoint ~/auth-token returning a JSON with a single attribute key, you can do something like this:

window.App = Ember.Application.create();

App.ApplicationController = Em.Controller.extend({
    token: ''
});

App.deferReadiness();

$.getJSON("/auth-token", function(token) {
    console.log(token.key);
    App.ApplicationController.reopen({
        token: token.key
    });
    App.advanceReadiness();
});

(see fiddle)