Crazy Nested Data

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  crazyNestedData: [{
    primaryData: "able-dataset_lvl-1",
    nestedData: [{
      primaryData: "able-dataset_lvl-2",
      nestedData: [{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      }]
    },{
      primaryData: "able-dataset_lvl-2",
      nestedData: [{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      }]
    }]
  },{
    primaryData: "able-dataset_lvl-1",
    nestedData: [{
      primaryData: "able-dataset_lvl-2",
      nestedData: [{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      },{
        primaryData: "able-dataset_lvl-3",
        nestedData: []
      }]
    }]
  }]
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#if crazyNestedData}}
  <table>
    {{#each crazyNestedData as |data|}}
      {{nest-group content=data tagName='tbody'}}
    {{/each}}
  </table>
{{/if}}
<br>
<br>

nest-group.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  tagName: '',
  
  groupIsExpanded: false,
  
  didInsertElement() {
    this._super();
    
    let $element = Ember.$('.' + this.get('content.primaryData')),
        $level = Number(this.get('content.primaryData').replace('able-dataset_lvl-', ''));
    
    $element.find('td span:first').css('marginLeft', 16 * $level);
  },
  
  actions: {
    toggleNestedData() {
      this.toggleProperty('groupIsExpanded');
    }
  }
  
});

nest-group.template.hbs

<tr {{action 'toggleNestedData'}}class={{content.primaryData}}>
  <td>
    <span>{{content.primaryData}}</span>
  </td>
</tr>
{{#if content.nestedData}}
  {{#if groupIsExpanded}}
    {{#each content.nestedData as |data|}}
      {{nest-group content=data}}
    {{/each}}
  {{/if}}
{{/if}}

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/1.13.9/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}