New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  
  something: Ember.computed(function() {
    return 'Something';
	}),
  
  list: [
    {
      type: "status",
      options: [
        {
          name: "status1"
        },
        {
          name: "status2"
        }
      ]
    }
  ],
  
  listWithCounts: Ember.computed('something', function() {
    let something = this.get('something');
    let list = this.get('list');
    
    list.forEach(function(item) {
      item.options.forEach(function(opt) {
      	opt.count = something.length;
      });
    });
    
    return list;
	}),
  
  actions: {
     setSomething: function(something) {
     	this.set('something', something);
     }
  }     
});

templates.application.hbs

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

{{#each listWithCounts as |item|}}
  {{item.type}}<br />
  {{#each item.options as |opt|}}
  count: {{opt.count}}<br />
	{{/each}}
{{/each}}

<button {{action 'setSomething' 'something else'}}>Set to something else</button>
<br>
<br>

twiddle.json

{
  "version": "0.4.8",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.8/ember.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.9/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.8/ember-template-compiler.js"
  }
}