LinkTo Test

application.controller.js

import Ember from 'ember';

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

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{#link-to 'parent'}}Parent{{/link-to}}
<br>
{{outlet}}
<br>
<br>

parent.controller.js

import Ember from 'ember';

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

parent.page-a.index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    return this.modelFor('parent')['page-a'];
  }
});

parent.page-a.index.template.hbs

{{model.title}}

parent.page-b.index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    return this.modelFor('parent')['page-b'];
  }
});

parent.page-b.index.template.hbs

{{model.title}}

parent.page-c.index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    return this.modelFor('parent')['page-c'];
  }
});

parent.page-c.index.template.hbs

{{model.title}}

parent.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  model: function() {
    return {
      'title': "Parent Title",
      'page-a': {"title": "Page A Title"},
      'page-b': {"title": "Page B Title"},
      'page-c': {"title": "Page C Title"}
    }
  }
});

parent.template.hbs

{{model.title}}
<br/>
{{#link-to 'parent.page-a.index'}}Page A{{/link-to}}
{{#link-to 'parent.page-b.index'}}Page B{{/link-to}}
{{#link-to 'parent.page-c.index'}}Page C{{/link-to}}
<br/>
{{outlet}}

router.js

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

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

Router.map(function() {
  this.route('parent', function(){
    this.route('page-a', function() {});
    this.route('page-b', function() {});
    this.route('page-c', function() {});
  });
});

export default Router;

styles.app.css

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

.active {
  background-color: red;
}

twiddle.json

{
  "version": "0.4.11",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.0.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.0.0-beta.1/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.0.0/ember-template-compiler.js"
  }
}