normalizeRoute() protected static method
Normalizes route and makes it suitable for UrlManager. Absolute routes are staying as is while relative routes are converted to absolute ones. A relative route is a route without a leading slash, such as "view", "post/view". If the route is an empty string, the current route will be used; If the route contains no slashes at all, it is considered to be an action ID of the current controller and will be prepended with yii\web\Controller::$uniqueId; If