New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  pretendSaveModel() {
    return Ember.RSVP.resolve();
  },
  
  init() {
   	this._super();
    
    this.pretendSaveModel().then(() => {
      const isCreator = true;
      if (!isCreator) {
      	return []; // pretend assignees 
      }
    }).then((assignees) => {
      if (!assignees) {
      	alert('Dear Brandon, this little tutorial should teach you about Promises!'); 
      }
    });
  
  },
    
});

templates.application.hbs

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

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}