url-for helper

controllers.application.js

import Ember from 'ember';

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

helpers.t.js

import Ember from 'ember';

export function t(params/*, hash*/) {
  return params[0];
}

export default Ember.Helper.helper(t);

helpers.url-for.js

import Ember from 'ember';

export default Ember.Helper.extend({
  routing: Ember.inject.service('-routing'),
  
  compute([routeName, model]) {
    let router = this.get('routing.router');
    
    if (model) {
      return router.generate(routeName, model);
    } else {
      return router.generate(routeName);
    }
  }
});

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none'
});

Router.map(function() {
  this.route('details', { path: 'details/:id' });
});

export default Router;

routes.details.js

import Ember from 'ember';

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

templates.application.hbs

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

{{t (url-for 'index')}}<br>
{{t (url-for 'details' 1)}}<br>
{{t (url-for 'details' 2)}}<br>

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}