New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  articles: Ember.A([
    Ember.Object.create({title:'title 1',status:'active'}),
    Ember.Object.create({title:'title 2',status:'draft'}),
    Ember.Object.create({title:'title 3',status:'draft'}),
    Ember.Object.create({title:'title 4',status:'draft'}),
    Ember.Object.create({title:'title 5',status:'active'}),
    Ember.Object.create({title:'title 6',status:'active'})   
  ]),
  
  publishedArticles : Ember.computed.filterBy('articles', 'status', 'active'), 
  
  draftArticles : Ember.computed.filterBy('articles', 'status', 'draft'),

  actions: {
    unpublish(a){a.set('status', 'draft');},
    
    publish(a){a.set('status', 'active');},
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<h2>Active Articles</h2>
<ul>
{{#each publishedArticles as |article|}}
 <li>{{article.title}} - {{article.status}} <button {{action 'unpublish' article}}>unpublish</button></li>
{{/each}}
</ul>

<h2>Draft Articles</h2>
<ul>
{{#each draftArticles as |article|}}
 <li>{{article.title}} - {{article.status}} <button {{action 'publish' article}}>publish</button></li>
{{/each}}
</ul>
<br>

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}