有没有一种方法可以获取URL所指的模块/动作？

get_module(\"http://host/cars/list\"); // (\"cars\")
get_action(\"http://host/frontend_dev.php/cars/list\"); // (\"list\")

get_module(\"/\");  // (What this returns is entirely dependent on the configured routes.)

public function executeSomeAction(sfWebRequest $request)
{
  if($params = $this->getContext()->getRouting()->parse(\'/blog\'))
  {
     $module = $params[\'module\']; // blog
     $action = $params[\'action\']; // index
     $route  = $params[\'_sf_route\'] // routing instance (for fun)
  }
  else
  {
     // your URL did not match
  }
}