Accordion-example

components.accordion-item.js

import Ember from 'ember';

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

components.accordion-wrapper.js

import Ember from 'ember';

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

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  list: [ 
    { id: 1, name: 'Test 1'},
    { id: 2, name: 'Test 2'},
    { id: 3, name: 'Test 3'},
  ]
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#accordion-wrapper  as |accordion|}}
	{{#each list as |item|}}
  	{{accordion.acc model=item}}
	{{/each}}
{{/accordion-wrapper}}
<br>
<br>

templates.components.accordion-item.hbs

<div class="accordion-item">
            {{model.name}}
        </div>

templates.components.accordion-wrapper.hbs

{{yield (hash
    acc=(component 'accordion-item')
)}}

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}