Airship\Cabin\Bridge\Blueprint\CustomPages::createDirRedirect PHP Method

    public function createDirRedirect(array $old, array $new) : bool
    {
        $this->log('Creating directory redirects', LogLevel::DEBUG, ['old' => $old, 'new' => $new]);
        $oldDir = !empty($old['path']) ? $this->getParentDirFromStr($old['path'], $old['cabin']) : null;
        foreach ($this->listCustomPagesByDirectoryID($oldDir) as $page) {
            $_old = ['cabin' => $old['cabin'], 'directory' => $page['directory'], 'url' => $page['url']];
            $url = $page['url'];
            $n = 1;
            // Deduplication
            do {
                $_new = ['cabin' => $new['cabin'], 'directory' => $oldDir, 'url' => $url];
                if ($n > self::MAX_DEDUP) {
                    // Don't let this go on forever.
                    $this->log('Create redirect -- too much recursion', LogLevel::DEBUG, ['new' => $_new]);
                    break;
                }
                ++$n;
                $url = $page['url'] . '-' . $n;
            } while (!$this->createPageRedirect($_old, $_new, true));
        }
        foreach ($this->listSubDirectoriesByDirectoryID($oldDir) as $dir) {
            $_old = $old;
            $_new = $new;
            $_old['path'] .= '/' . $dir['url'];
            $_new['path'] .= '/' . $dir['url'];
            $this->createDirRedirect($_old, $_new);
        }
        return true;
    }