ember discuss question

controller.js

import { task } from 'ember-concurrency';

export default Controller.extend({
  setup: task(function*() {
     yield delay(6000);
     this.set('model', { message: '1' });

     yield delay(4000);
     this.set('model', { message: '2' });

     yield delay(2000);
     this.set('model', { message: '3' });
  })
})

route.js

export default Route.extend({
   setupController(controller) {
     this._super(...arguments);
     
     controller.get('setup').perform();
   }
});

template.hbs

{{model.message}}