New Twiddle

application.controller.js

import Ember from 'ember';

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

application.route.js

import Ember from 'ember';

export default Ember.Route.extend({
});

application.template.hbs

{{#link-to 'foo'}}Top Route{{/link-to}}
<br />
{{#link-to 'foo.bar'}}Middle Route{{/link-to}}
<br />
{{#link-to 'foo.bar.slow-model'}}Slow Route{{/link-to}}
<br />

<br>
{{outlet}}
<br>
<br>

foo.bar.loading.template.hbs

<div class="loading">
<h4> I'm foo.bar.loading</h4>
</div>

foo.bar.route.js

import Ember from 'ember';

export default Ember.Route.extend({
});

foo.bar.slow-model.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
    		return new Ember.RSVP.Promise(function (resolve) {
          
			Ember.run.later(function () {
				resolve({name: 'bob', id: 1});
			}, 5000);
		});
  }
});

foo.bar.slow-model.template.hbs

<div class="slow">
<h4> Slow route loaded!</h4>
</div>

foo.bar.template.hbs

<div class="middle">
<h4>I'm the middle route</h4>
<br />
{{outlet}}
</div>

foo.loading.template.hbs

<div class="loading">
<h4>I'm foo.loading</h4>
</div>

foo.route.js

import Ember from 'ember';

export default Ember.Route.extend({
});

foo.template.hbs

<div class="top">
<h4> I'm the top route</h4>
<br />
{{outlet}}
</div>

router.js

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

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

Router.map(function() {
  this.route('foo', function(){
    this.route('bar', function(){
    	this.route('slow-model');
    });
  });
});

export default Router;

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
  height: 100%;
  width: 100%
}

.loading {
  min-height: 60%;
  min-width: 60%;
  background-color: #FFE;
}

.top{
	min-height: 500px;
  min-width: 500px;
  background-color: #EEF;
}

.middle {
  min-height: 80%;
  min-width: 80%;
  background-color: #EFE;
}

.slow{
  min-height: 60%;
  min-width: 60%;
  background-color: #FEE;
}

twiddle.json

{
  "version": "0.4.10",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}