RedirectManager.php

<?php

    private function redirectToCmsPage(RedirectRule $rule): string
    {
        $parameters = [];

        // Strip curly braces from keys
        foreach ($rule->getPlaceholderMatches() as $placeholder => $value) {
            $parameters[str_replace(['{', '}'], '', (string) $placeholder)] = $value;
        }

        return (string) $this->getCmsPageRelativeUrl($rule->getCmsPage(), $parameters);
    }

    private function redirectToStaticPage(RedirectRule $rule)
    {
        if (class_exists('\RainLab\Pages\Classes\Page')) {
            /** @noinspection PhpUnnecessaryFullyQualifiedNameInspection */
            /** @noinspection PhpUndefinedClassInspection */
            return $this->getStaticPageRelativeUrl($rule->getStaticPage());
        }

        return false;
    }


    private function getCmsPageRelativeUrl($name, $parameters = [])
    {
        $router = new \Cms\Classes\Router(\Cms\Classes\Theme::getActiveTheme());
        $parameters = array_merge($router->getParameters(), $parameters);
        $url = $router->findByFile($name, $parameters);

        if ($url) {
            return $url;
        }

        return null;
    }

    private function getStaticPageRelativeUrl($name)
    {
        if (empty($name) || !$page = Page::find($name)) {
            return null;
        }

        return array_get($page->attributes, 'viewBag.url');
    }