New Twiddle

controllers.application.js

import Ember from 'ember';

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

models.my-model.js

import Model from "ember-data/model";
import attr from "ember-data/attr";
import { belongsTo, hasMany } from "ember-data/relationships";

export default Model.extend({
  name:DS.attr('string'),
  age:DS.attr('number')
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model(){
  	return {
    	"data" : {
        "group" : [{"group":"newGroup"}, {"group":"oldGroup"}],
      	"details" : [{"name":"arif","age":"3"}, 				{"name":"afi","age":"2"}]
      }
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
<ul>
{{#each model.data.details as |data index| }}
	<li>
  	{{get this (concat "model.data.group." index ".group")}}
    {{data.name}} -- {{data.age}} 
  </li>
{{/each}}
</ul>
<br>
<br>

twiddle.json

{
  "version": "0.13.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}