Accessibility Labels

components.a11y-label.js

import Ember from 'ember';

const {
  Component,
  computed,
  get,
  guidFor
} = Ember;

export default Component.extend({
  tagName: '',
  computed,
  
  targetId: computed(function() {
    return guidFor(this);
  }),
  
  actions: {
    register(child) {
      this.set('targetId', get(child, 'id'));
    }
  }
});

components.my-input.js

import Ember from 'ember';

const {
  Component,
  run
} = Ember;

export default Component.extend({
  tagName: 'input',
  register: null,
  
  didInsertElement() {
    run.next(() => {
      this.sendAction('register', this);
    });
  }
});

components.video-player.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: 'video',
  attributeBindings: [
    'autoplay',
    'muted',
    'height',
    'width',
    'poster',
    'controls',
  ],
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<div>Video</div>

{{video-player
  autoplay=true
  muted=true
  height=123
  controls=true
  src="http://vjs.zencdn.net/v/oceans.mp4"
  poster="http://vjs.zencdn.net/v/oceans.png"
}}

templates.components.a11y-label.hbs

<label for="{{targetId}}">{{text}}</label>
{{yield targetId (action "register")}}

templates.components.video-player.hbs

{{yield}}

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}