if (isset($_POST['submit-file'])) {

        try {
            $date = $_POST['add-file-date']." ".date("H:i:s");
            $documents->addDocument($_POST['add-file-title'], $date, $_FILES["add-file-doc"], $_POST['add-file-subject']);
            Edu::displaySuccess(Messages::$document_uploaded);
        } catch (InvalidInputException $e) {
            Edu::displayError($e->getMessage());
        } catch (DatabaseErrorException $e) {
            Edu::displayError(Messages::$system_error);
        }

    }