gettersetter-broken

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  
  breaker: Ember.computed({
    get() {
      return 'break-foo';
    },
    set(key, newName) {
      return newName;
    }
  }),
  
  foo: Ember.computed('breaker', {
    get() {
      return 'foo';
    },
    set(key, newFoo) {
      // TODO expected behaviour is that newFoo is somehow 'persisted'
			return newFoo;
    }
  }),
  
  actions: {
    updateFoo() {
      this.set('foo', 'bar');
    },
    breakFoo() {
      
      this.set('breaker', `broken ${Date.now()}`);
    }
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
Foo: {{foo}}
<button {{action 'updateFoo'}}>Update Foo</button>

<br>
<br>
BreakFoo: {{breaker}}
<button {{action 'breakFoo'}}>break Foo</button>

twiddle.json

{
  "version": "0.4.17",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}