object array each

components.slow-word.js

import Ember from 'ember';

export default Ember.Component.extend({
  isVisible: false,
  
  didInsertElement() {
    Ember.run.later(() => {
      this.set('isVisible', true);
    }, 3000);
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  words: Ember.computed('bWords', function() {
    let a = Ember.A([{
      text: 'foo',
      sort: 1
    }, {
      text: 'bar',
      sort: 2
    }, {
      text: 'baz',
      sort: 3
    }]);
    
    if (this.get('bWords')) {
      return a.filter((word) => {
        return Ember.get(word, 'text').startsWith('b');
      });
    } else {
    	return a; 
    }
  })
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{input type="checkbox" checked=bWords}} Show only B words
<br>
{{#each words key="text" as |word|}}
	{{#slow-word}}
  	{{word.text}}
  {{/slow-word}}<br>
{{/each}}
<br>
<br>

templates.components.slow-word.hbs

{{yield}}

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": {}
}