ember-flopping-route-demo

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  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('flopping-route', {path: 'flopping-route/:seg'})
});

export default Router;

routes.application-error\.js

import Route from '@ember/routing/route';

export default Route.extend({
	actions: {
    async retry() {
      try {
        const appController = this.controllerFor('application')
      	await appController.failedTransition.retry()
        appController.set('failedTransition', null)
      }
      catch (e) {
        console.log(e)
        alert(`retry error: ${e.message}`)
      }
    },
  },
});

routes.application\.js

import Route from '@ember/routing/route';

export default Route.extend({
	actions: {
  	error(error, transition) {
  		const appController = this.controllerFor('application');
  		appController.set('failedTransition', transition);
  		return true;
  	},
  },
});

routes.flopping-route\.js

import Route from '@ember/routing/route';

export default Route.extend({
  model({seg}) {
    console.log('*** loading model', seg)
    if (Math.random() > 0.5) {
      throw new Error('route flopped');
    }
    return 'Route has not flopped yet'
  },
  
  actions: {
  	onRefreshClick() {
  		this.refresh()
		},
	},
});

templates.application-error\.hbs

<h3>ERROR: {{model.message}}</h3>

<button {{action "retry"}}>Retry</button>
OR {{link-to "Go Home" "index"}}

templates.application\.hbs

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

{{link-to "Home" "index"}} /
{{link-to "Flopping route" "flopping-route" "my-seg"}}

<br>
<br>
{{outlet}}
<br>
<br>

templates.flopping-route\.hbs

<h3>FLOPPING ROUTE</h3>

Hello, {{model}}
<br>
<br>
<button {{action "onRefreshClick"}}>Refresh</button>

templates.index\.hbs

<h3>HOME PAGE</h3>

Switching between "Home" and "Flopping route" pages and clicking "retry" on flopped route will work.
<br>
<br>
Going to "Flopping route" and pressing "refresh" when it's not flopping will break any following "retry".
<br>
<br>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}