New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: ['foo'],
  foo: 1,
  actions: {
    increment() {
      this.incrementProperty('foo');
      this.send('refreshRoute');
    },
  },
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  actions: {
    refreshRoute() {
      this.refresh();
    },
  },
});

templates.application.hbs

<button {{action "increment"}}>Increment query param</button>

{{foo}}

twiddle.json

{
  "version": "0.7.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/ember.js",
    "ember-template-compiler": "release"
  }
}