Support for route error substate

[rogatty]

Expected behaviour

When the application route model rejects and the app enters an error substate, FastBoot should render a user-friendly error page and set a desired status code on the response.

Actual behaviour

FastBoot throws an error and renders empty page with status code 503.

Workaround

Enter the error substate manually and prevent bubbling the error up:

routes/application.js

actions: {
  error(err) {
    const fastboot = this.get('fastboot');

    if (fastboot.get('isFastBoot')) {
      fastboot.set('response.statusCode', err.code);
      this.intermediateTransitionTo('application_error', err);
      
      return false;
    }

    return true;
  }
}

[kratiahuja]

Just brainstorming: Can this not be handled in fastboot-app-server or a middleware? FastBoot library is app agnostic. It simply will return the serialized HTML and inject it into the base page.

[rogatty]

Might have been fixed by emberjs/ember.js#15689, something to check.

[kratiahuja]

Going to close this as this is fixed in Ember 2.15.1. Please reopen if this is still an issue.