NestedRoutes

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember 2.0'
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<nav>
  {{#link-to "articles" class='articles-link'}}Articles{{/link-to}}
  {{#link-to "comments" class='comments-link'}}Comments{{/link-to}}
</nav>
<div class='application'>
{{outlet}}
</div>
<br>
<br>

articles.new.template.hbs

New articles content

articles.overview.template.hbs

Overview articles content

articles.template.hbs

<br>
<br>
<nav>
  {{#link-to "articles.new" 
  class='articles-new-link'}}New{{/link-to}}
  {{#link-to "articles.overview" 
  class='articles-overview-link'}}Overview{{/link-to}}
</nav>
<div class='articles'>
{{outlet}}
</div>

comments.new.template.hbs

New comment content

comments.template.hbs

<br>
<br>
<nav>
  {{#link-to "comments.new" class='comments-new-link'}}New{{/link-to}}
</nav>
<div class='comments'>
{{outlet}}
</div>

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('articles', function () {
    this.route('overview');
    this.route('new');
  });
  this.route('comments', function () {
  	this.route('new');
  });
});

export default Router;

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
  height:100%;
}
.articles-link {
	color: #b71c1c;
}
.articles{
	border: 1px solid #b71c1c;
  padding: 20px;
}
.articles-new-link {
	color: #ff5252;
}
.articles-overview-link {
	color: #311b92;
}
.comments-new-link {
	color: #01579b ;
}
.comments-link {
	color: #1b5e20;
}
.comments{
	border: 1px solid #1b5e20;
  padding: 20px;
}
.application{
  border: 1px solid lightgrey;
  padding: 20px;
}

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}