This package is abandoned and no longer maintained. No replacement package was suggested.
There is no license information available for the latest version (v1.0.0rc5) of this package.

URI routing for Hack with codegen

v1.0.0rc5 2017-09-28 17:39 UTC


Continuous Integration

Code generation for controller classes using the UriPattern system from hhvm/hack-router

This currently supports generating:

  • Request routing maps
  • Hack request routing classes for your site

For now, looking at the unit tests is the best way to learn how to use it.

Building a Request Router

use \Facebook\HackRouter\Codegen;

final class UpdateCodegen {
  public function main(): void {
        'controllerBase' => WebController::class,
        'router' => shape(
          'abstract' => false,
          'file' => __DIR__.'/../codegen/Router.php',
          'class' => 'Router',

This will generate a class called 'Router', complete with an automatically-generated route map, based on the URI patterns in your controllers.

WebController is the root controller for your site, and must implement Facebook\HackRouter\IncludeInUriMap, which in turn requires Facebook\HackRouter\HasUriPattern - for example:

public static function getUriPattern(): UriPattern {
  return (new UriPattern())
    ->enum(MyEnum::class, 'MyEnum');

Commit Your Codegen!

This is unusual advice, but it's the best approach for Hack code as you otherwise have a circular dependency:

  • HHVM will not execute hack code if there are references to undefined classes
  • Once you use the codegen, you reference the codegen classes
  • ... so you can't build them if you don't already have them


We welcome GitHub issues and pull requests - please see CONTRIBUTING.md for details.


hack-router-codegen is MIT-licensed.