CustomLayout

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>
{{my-component}}
<br>
<br>

my-component.component.js

import Ember from 'ember';
import layout from './crazy-layout';
import defaultLayout from './default';
export default Ember.Component.extend({
  // layout: layout,
  booleanProp: true,
  init () {
    this._super(...arguments);
    console.log('here');
    console.log('existing layout is');
    console.log(this.layout);
    console.log(layout);
    this.layout = layout;
    console.log(this.layout);
  },
  
  click () {
    console.log('clicked');
    this.set('layout', defaultLayout);
    this.toggleProperty('booleanProp');
    this.rerender();
  }
});

my-component.crazy-layout.hbs

{{#if booleanProp}}
  <h3>Funnky Component</h3>
  {{booleanProp}}
{{else}}
  <h3>Funky Component</h3>
  {{booleanProp}}
{{/if}}

my-component.default.hbs

{{#if booleanProp}}
  <h3>My-component layout</h3>
  {{booleanProp}}
{{else}}
  <h3>My-component layout</h3>
  {{booleanProp}}
{{/if}}

twiddle.json

{
  "version": "0.4.17",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}