Ember Error Handling

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Basic Error Handling',
  errorsArray: Ember.A([]),
  
  displayError(error) {
   this.get('errorsArray').pushObject({ 
   	message: error
   }); 
  }
});

router.js

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

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

Router.map(function() {
  this.route('login');
  this.route('test-errors');
});

export default Router;

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  actions: {
    error(error, transition) {
      this.controllerFor('application').displayError(error.message);
    }
  }
});

routes.login.js

import Ember from 'ember';

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

routes.test-errors.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel() {
    return Ember.RSVP.reject('bad things happened!');
  },

  actions: {
    error(error, transition) {
      // Assuming we got here due to the error in `beforeModel`,
      // we can expect that error === "bad things!",
      // but a promise model rejecting would also
      // call this hook, as would any errors encountered
      // in `afterModel`.

      // The `error` hook is also provided the failed
      // `transition`, which can be stored and later
      // `.retry()`d if desired.
      
      debugger;
      
      this.controllerFor('application').displayError(error);

      this.transitionTo('login');
    }
  }
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

templates.application.hbs

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

{{link-to 'Try to go to the "test-errors" route, but get redirected to login' 'test-errors'}}

{{#if errorsArray.length}}
<div style="font-size: 20px; color: red; margin-top: 40px;">Errors!</div>
{{/if}}
<ul>
{{#each errorsArray as |error|}}
<li>{{error.message}}</li>
{{/each}}
</ul>

templates.login.hbs

<h1>Redirected from "test-errors"!</h1>

templates.test-errors.hbs

<h1>Never gets here because of error and redirect</h1>

twiddle.json

{
  "version": "0.13.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.16.2",
    "ember-template-compiler": "2.16.2",
    "ember-testing": "2.16.2"
  },
  "addons": {
    "ember-data": "2.16.3"
  }
}