Component Factory

controllers.application.js

import Ember from 'ember';

const NewPostModalSetup = Ember.Object.extend({
  isActive: false,
  posts: null,

  withOpenModal() {
    return NewPostModalSetup.create({
      isActive: true
    });
  },

  withDataLoading() {
    return NewPostModalSetup.create({
      posts: Ember.RSVP.defer().promise
    });
  },

  withDataLoaded() {
    return NewPostModalSetup.create({
      posts: FactoryGuy.makeList('posts', 3)
    });
  },

  render(context) {
    context.setProperties({
      isActive: this.get('isActive'),
      posts: this.get('posts'),
    });
    context.render(hbs`{{new-post-modal
      isActive=isActive
      posts=posts
    }}`)
  }
});

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',

  init() {
    const x = NewPostModalSetup.create().withOpenModal().withDataLoading();
    console.log(x.posts);
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}