New Twiddle

abilities.user\.js

import { alias } from '@ember/object/computed';
import { Ability } from 'ember-can';

export default Ability.extend({
  model: null,
  canCreate: alias('model.isAdmin')
});

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';
	user  = {
   	isAdmin: true 
  }
	secondUser = { 
    isAdmin: false
  }
}

templates.application\.hbs

{{#if (can 'create user' this.user)}}
	user
{{/if}}
<br>
{{#if (can 'create user' this.secondUser)}}
	user
{{/if}}

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-can": "1.1.1"
  }
}