delay-model-resolve.js

route.js

function wait(value, timeout) {
  return new Ember.RSVP.Promise(function(resolve, _) {
    window.setTimeout(function() {
      Ember.run(function() {
        resolve(value);
      });
    }, timeout);
  });
}

App.ChildRoute = Ember.Route.extend({
  model: function() {
    var delay = 2 * 1000;
    return this.find('band').then(function(bands)){
      return wait(bands, delay);
    }
  }
})