Pathless Routes For Deferred Rendering

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('feed-shell', { path: '/' }, function() {
    this.route('feed', { path: '' })
  })
});

export default Router;

routes.feed-shell.feed.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    return new Promise((r) => {
      setTimeout(() => {
        r()
      }, 1000)
    })
  }
});

routes.feed-shell.js

import Ember from 'ember';

export default Ember.Route.extend({
});

styles.app.css

body {
  margin: 0;
  padding: 0;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
  background: #e9ebee
}

nav {
  width: 100%; 
  height: 50px;
  background: #3b5998;
}

.item {
  background: #fff; 
  border: 1px solid blue; 
  width: 100%; 
  padding: 10px; 
  overflow: hidden; 
  margin-bottom: 10px;
}

.image {
  width: 50px; 
  height: 50px;
  float: left;
}

.post-image {
  display: block;
}

.post-content {
  width: 300px;
  height: 10px; 
  margin-left: 10px; 
  float: left;
}

.ghost-image {
  background: #D3D3D3; 
}

.ghost-text {
  width: 300px; 
  height: 10px; 
  margin-left: 10px; 
  background: #D3D3D3; 
  float: left;
}

templates.application.hbs

<nav>
  NAV
</nav>

<p>This illustrates using path-less routes to load data that takes a long time to load. The effect is that you can get very fast TTFP and potentially TTFI.</p>
<br> 
<br>
{{outlet}}
<br>
<br>

templates.feed-shell.feed.hbs

<div>
  <div class="item">
    <img class="image post-image" src="http://lorempixel.com/50/50/">
    <div class="post-content">
      It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.
    </div> 
  </div>
  <div class="item">
    <img class="image post-image" src="http://lorempixel.com/50/50/">
    <div class="post-content">
      It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.
    </div>
  </div>
  <div class="item">
    <img class="image post-image" src="http://lorempixel.com/50/50/">
    <div class="post-content">
      It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.
    </div>
  </div>
  <div class="item">
    <img class="image post-image" src="http://lorempixel.com/50/50/">
    <div class="post-content">
      It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.
    </div>
  </div>
</div>

templates.feed-shell.hbs

<div style="border: 1px solid red; padding: 30px;">
  <h1>Shell</h1>
  <p>Meant to render almost instantly</p>
  {{outlet}}
</div>

templates.feed-shell.loading.hbs

<div>
  <div class="item">
    <div class="image ghost-image"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
  </div>
  
    <div class="item">
    <div class="image ghost-image"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
  </div>
    <div class="item">
    <div class="image ghost-image"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
  </div>
    <div class="item">
    <div class="image ghost-image"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
    <div class="ghost-text"></div>
  </div>
  
</div>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}