Dynamic key validation

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({

  
  a: false,
  b: false,
  c: false,

  validationSet: ['a', 'b', 'c'], //Imagine this being a dynamic set of keys that we care about
  
  isValid: Em.computed('validationSet.[]', function() {
    return this.get('validationSet').every(v => v === true);
  })
});

templates.application.hbs

<h1>Am I Valid? {{isValid}}</h1>
<br>
With A, B, C Checked we should be valid
<br>
<br>
A: {{input type="checkbox" checked=a}}
B: {{input type="checkbox" checked=b}}
C: {{input type="checkbox" checked=c}}

<br>
<br>

<br>

twiddle.json

{
  "version": "0.10.7",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.0",
    "ember-data": "2.10.0",
    "ember-template-compiler": "2.10.0",
    "ember-testing": "2.10.0"
  },
  "addons": {}
}