ember-procrastination demo

controllers.application.js

import Ember from 'ember';
import { someday } from 'ember-procrastination';
import { timeout } from 'ember-concurrency';

export default Ember.Controller.extend({
  regenerateNumber: someday(function* () {
    this.set('num', Math.random());
    yield timeout(1000);
  })
});

templates.application.hbs

<span>
  Number is: {{num}}
</span>
<pre>
  state = {{regenerateNumber.state}}
  lastExcuse = {{regenerateNumber.lastExcuse}}
</pre>
<br />
<button
  type="button"
  disabled={{regenerateNumber.isRunning}}
  onClick={{procrastinate regenerateNumber}}>
  {{#if (and regenerateNumber.isProcrastinating regenerateNumber.lastExcuse)}}
    {{regenerateNumber.lastExcuse}}
  {{else if regenerateNumber.isRunning}}
    Doing the thing...
  {{else if regenerateNumber.isQueued}}
    Ugh... Why do you keep asking me to do stuff?
  {{else}}
    Do the Thing
  {{/if}}
</button>

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-data": "2.12.1",
    "ember-concurrency": "0.8.2",
    "ember-truth-helpers": "latest",
    "ember-procrastination": "0.1.2"
  }
}