query-param-test

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  
  queryParams: ['type'],
  
  type: null,
  
  actions: {
  	setType(type) {
    	this.set('type', type);
		}
	}
});

templates.application.hbs

type: {{type}}
<br><br>
<button onclick={{action 'setType' 'A'}}>A-Type</button>
<button onclick={{action 'setType' 'B'}}>B-Type</button>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "release",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}