New Twiddle

application.controller.js

import Ember from 'ember';

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

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
{{sm-journal}}
<br>

r-comments.hbs

{{name}}<br>
   {{#each childs as |event|}}
      {{render "r-comments" event}}
   {{/each}}
{{outlet}}

sm-journal.component.js

import Ember from 'ember';

export default Ember.Component.extend({
   currentUser: -1,
 		events: [
      {
        id: 1,
        name: "test1",
        childs: [
           {
            id: 3,
            name: "test3",
            childs: [],
            parentId: 1
     			 }
        ],
        parentId: null
      },
      {
        id: 2,
        name: "test1",
        childs: [],
        parentId: null
      }
    ]
});

sm-journal.template.hbs

{{yield}}
{{yield}}
  {{#each this.events as |event|}}
      {{render "r-comments" event}}
  {{/each}}

twiddle.json

{
  "version": "0.6.3",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.1/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.1/ember-template-compiler.js"
  }
}