Retry aborted transition

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  abortedTransition: undefined,
  
  actions: {
  	navigate() {
      this.transitionToRoute('success');
    },
    
    retry() {
      this.get('abortedTransition').retry().then(() => {
        this.set('abortedTransition', undefined);
        this.set('isSuccess', true);
      });
    }
  }
});

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');
  this.route('success');
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  actions: {
    willTransition(transition) {
      if (!this.controller.get('abortedTransition')) {
        transition.abort();
        this.controller.set('abortedTransition', transition);
      }
    }
  }
});

routes.success.js

import Ember from 'ember';

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

templates.application.hbs

{{#if abortedTransition}}
  <button {{action "retry"}}>Retry the aborted transition</button>
{{else if isSuccess}}
  {{#link-to "index"}}Start over{{/link-to}}
{{else}}
 <button {{action "navigate"}}>This transition is going to abort</button>
{{/if}}

{{outlet}}

templates.success.hbs

<p>You made it to the end. Congrats.</p>

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"
  }
}