New Twiddle

components.radio-button.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: 'input',
  type: 'radio',
  attributeBindings: ['type', 'htmlChecked:checked', 'value', 'name', 'disabled'],

  htmlChecked: function() {
    return this.get('value') === this.get('checked');
  }.property('value', 'checked'),

  change: function() {
    this.set('checked', this.get('value'));
  },

  _updateElementValue: function() {
    Ember.run.next(this, function() {
      this.$().prop('checked', this.get('htmlChecked'));
    });
  }.observes('htmlChecked')
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  whichChoice: Ember.observer('choice', function() {
  	const choice = this.get('choice');
    
    console.log('Choice is: ', choice);
  })
});

templates.application.hbs

Yes{{radio-button value='yes' checked=choice}}
No{{radio-button value='no' checked=choice}}

templates.components.radio-button.hbs

{{yield}}

twiddle.json

{
  "version": "0.10.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0"
  },
  "addons": {}
}