New Twiddle

controllers.application.js

import Ember from 'ember';

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

controllers.index.js

import Ember from 'ember';

export default Ember.Controller.extend({
  sortProp: 'category',
  sortProp2: 'dupa',
  sortProp2Val: 'aaa'
});

helpers.dynamic-query-params.js

import Ember from 'ember';

export function dynamicQueryParams(params, hash) {
  const values = {};
  
  for (let i = 0; i+1 < params.length; i+=2) {
    const key = params[i];
    const value = params[i+1];
    values[key] = value;
  }
  
  return Ember.Object.create({
    isQueryParams: true,
    values: values
  })
}

export default Ember.Helper.helper(dynamicQueryParams);

templates.application.hbs

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

templates.index.hbs

{{#link-to "index" (dynamic-query-params sortProp 'up' sortProp2 sortProp2Val)}}Link{{/link-to}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}