New Twiddle

controllers.application.js

import Ember from 'ember';

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

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('no', { path: '/:id' })
});

export default Router;

routes.no.js

import Ember from 'ember';

export default Ember.Route.extend({
  afterModel({ id }, transition) {
    if (id == 2) {
      // What to do when the transition is from a URL/location change
      // Not transitionTo
      if (transition.sequence === 0) {
        return this.transitionTo('index');
      }

      transition.abort();
    }
  }
});

templates.application.hbs

{{#link-to "no" 1}}Try 1{{/link-to}}
{{#link-to "no" 2}}Try 2{{/link-to}}

<p>The Page should abort if try 2</p>

<p>How do you check if transition is from URL vs router transitions</p>

twiddle.json

{
  "version": "0.14.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "2.18.2",
    "ember-template-compiler": "2.18.2",
    "ember-testing": "2.18.2"
  },
  "addons": {
    "ember-data": "2.18.2"
  }
}