Checkbox Desync w/ Group Select

README.md

REPRO

1. click Group
2. DESYNC: notice that Group is unchecked and true

VARIATION: on change

1. modify template to bind the action on="change"
2. click Foo
3. notice that Group is checked and true
4. click Group
5. DESYNC: notice that Group is unchecked and true

SOLUTION: runloop

bind to the default action and wrap the inside of toggleGroup inside Ember.run.next.

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  foo: false,
  bar: false,
  fooOrBar: Ember.computed.or('foo', 'bar'),
  fooAndBar: Ember.computed.and('foo', 'bar'),
  
  actions: {
    toggleGroup: function () {
      if (this.get('fooAndBar')) {
        this.set('foo', false);
        this.set('bar', false);
      } else {
        this.set('foo', true);
        this.set('bar', true);
      }
    }
  }
});

application.template.hbs

<fieldset>
  <legend>
    <input type="checkbox" checked={{fooOrBar}} {{action 'toggleGroup' on='change'}} />
    Group ({{fooOrBar}})
  </legend>
  <div>
    {{input type="checkbox" checked=foo}}
    Foo
  </div>
  <div>
    {{input type="checkbox" checked=bar}}
    Bar
  </div>
</fieldset>

twiddle.json

{
  "version": "0.6.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.3.1/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.3.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}