Link-to, active class, & queryparams

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

controllers.my-route.js

import Ember from 'ember';

export default Ember.Controller.extend({
  
  queryParams: [ 'typeCategories' ]
  
});

router.js

import EmberRouter from '@ember/routing/router';
import config from './config/environment';

const Router = EmberRouter.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('my-route');
});

export default Router;

routes.my-route.js

import Ember from 'ember';

export default Ember.Route.extend({
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

a.active {
  border: 2px solid green;
  background-color: red;
}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
{{#link-to 'my-route' (query-params typeCategories="Initiative")}}
	Initiatives
{{/link-to}}
<br>
{{#link-to 'my-route' (query-params typeCategories="Dataset")}}
	Data
{{/link-to}}
<br>

<br>
{{outlet}}

templates.my-route.hbs

queryParams: {{typeCategories}}

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}