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({
  mockData: Ember.on('init', function() {
  	this.store.pushPayload('person', {
  people: [
    {
      id: 1,
      first_name: "Tom",
      last_name: "Dale",
    },
    {
      id: 2,
      first_name: "Jose",
      last_name: "San Gil"
    }
  ]});
  }),
      
  model() {
  	return this.store.peekAll('person');
  }
});

application.template.hbs

<h1>People</h1>
<ol>
{{#each model key='id' as |person|}}
	<li>Person: {{person.firstName}} {{person.lastName}}</li>
{{/each}}
</ol>
<br>
<br>

models.person.js

import DS from 'ember-data';

export default DS.Model.extend({
  firstName: DS.attr('string'),
  lastName: DS.attr('string'),

  children: DS.hasMany('person')
});

serializers.person.js

import DS from 'ember-data';

export default DS.RESTSerializer.extend({
	normalize(typeClass, hash) {
  	hash['firstName'] = hash['first_name'];
    hash['lastName'] = hash['last_name'];
    delete hash['first_name'];
    delete hash['last_name'];
    return this._super(typeClass, hash);
  }
});

twiddle.json

{
  "version": "0.4.10",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.1.0",
    "ember-data": "2.1.0",
    "ember-template-compiler": "2.1.0"
  }
}