Features Service

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  features: Ember.inject.service(),
  
  actions: {
    enableDepartments() {
      this.get('features').enable('departments');
    },
    
    disableDepartments() {
    this.get('features').disable('departments');
    }
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}

<button {{action "enableDepartments"}}>Enable Departments</button>

<button {{action "disableDepartments"}}>Disable Departments</button>

<h1>
{{#if features.departments}}
  Department feature enabled
  
{{else}}
  Department feature disabled
{{/if}}
</h1>
<br>
<br>

features.service.js

import Ember from 'ember';

export default Ember.Service.extend({
  _flags: Ember.Object.create({
    departments: true
  }),
  
  enable(feature) {
    this.get('_flags').set(feature, true);
    this.notifyPropertyChange(feature);
  },
  
  disable(feature) {
    this.get('_flags').set(feature, false);
    this.notifyPropertyChange(feature);

  },
  
  unknownProperty(key) {
    return this._flags[key];
  }
});

twiddle.json

{
  "version": "0.5.0",
  "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/2.2.0/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"
  }
}