function doServeFile(name, fullpath, res) {
    if (fullpath) {
        console.info("---try send file:" + fullpath);
        res.sendFile(fullpath);

    }else {
        res.status(404);
    }
}

router.get("/:id", function (req, res, next) {
    Model.findById(id).then(file=> {
        var fullPath = Config.uploadDest + "/" + file.path;
        doServeFile(file.filename, fullPath, res)
    }).catch(Util.dbErrorHandler);
});