New Twiddle

abilities.application.js

import { Ability } from 'ember-can';
import computed from 'ember-computed';

export default Ability.extend({
  canShow: computed('model.show', function() {
    return this.get('model.show');
  })
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Twiddle',
  model: Ember.Object.create({
  	show: true
  }),
  
  actions: {
  	toggle() {
    	this.toggleProperty('model.show'); 
    }
  }
});

templates.application.hbs

{{#if (can 'show application' model)}}
  <h1>Welcome to {{appName}}</h1>
  <br>
  <br>
  {{outlet}}
  <br>
  <br>
{{/if}}
{{#if (cannot 'show application' model)}}
Cannot show the application !
{{/if}}
<button {{action 'toggle'}}>Toggle</button>

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": {
  	"ember-can": "0.8.0"
  }
}