ArticleHandler::downloadSuppFile PHP Method

    function downloadSuppFile($args, $request)
    {
        $articleId = isset($args[0]) ? $args[0] : 0;
        $suppId = isset($args[1]) ? $args[1] : 0;
        $submissionFileDao = DAORegistry::getDAO('SubmissionFileDAO');
        $submissionFiles = $submissionFileDao->getBySubmissionId($articleId);
        foreach ($submissionFiles as $submissionFile) {
            if ($submissionFile->getData('old-supp-id') == $suppId) {
                $articleGalleyDao = DAORegistry::getDAO('ArticleGalleyDAO');
                $articleGalleys = $articleGalleyDao->getBySubmissionId($articleId);
                while ($articleGalley = $articleGalleys->next()) {
                    $galleyFile = $articleGalley->getFile();
                    print_r($galleyFile);
                    if ($galleyFile && $galleyFile->getFileId() == $submissionFile->getFileId()) {
                        header('HTTP/1.1 301 Moved Permanently');
                        $request->redirect(null, null, 'download', array($articleId, $articleGalley->getId(), $submissionFile->getFileId()));
                    }
                }
            }
        }
        $dispatcher = $request->getDispatcher();
        $dispatcher->handle404();
    }