gistfile1.php

<?php
App::uses('CakeRoute', 'Routing/Route');
class HyphenRoute extends CakeRoute {

	public function parse($url) {
		if ($route = parent::parse($url)) {
			if (strtolower($route['action'] !== $route['action'])) {
				throw new NotFoundException();
			}
			if (strpos($route['action'], '-') !== false) {
				$route['action'] = Inflector::variable(str_replace('-', ' ', $route['action']));
			}
		}
		return $route;
	}

	protected function _writeUrl($params) {
		$params['action'] = str_replace('_', '-', Inflector::underscore($params['action']));
		return parent::_writeUrl($params);
	}

}