Concurrency meets Evented

controllers.application.js

import Ember from 'ember';
import Thing from 'twiddle/thing';
import { task } from 'ember-concurrency';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  thing: Ember.computed(() => Thing.create()),
  
  _loadData: task(function* () {
    let api = this.get('thing');

    yield api.stuff()
      .on('dataUpdate', () => {
      	console.log('HI');
      });
  }).drop(),
  
  actions: {
    loadData() {
      this.get('_loadData').perform();
    },
	}
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

<button {{action 'loadData'}}>Click me</button>

thing.js

import Ember from 'ember';

export default Ember.Object.extend(Ember.Evented, {
  stuff() {
    console.log('stuff');
    Ember.run.later(() => {
      this.trigger('dataUpdate');
    }, 2000);
    return this;
  },
});

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-concurrency": "0.8.12"
  }
}