invoice_man_code_3

    function save(){
        $file = JRequest::getVar('jform', null, 'files', 'array');
        $path = JPATH_BASE;

        // Make the file name safe.
        jimport('joomla.filesystem.file');
        $file['name']['invoice'] = JFile::makeSafe($file['name']['invoice']);

        // Move the uploaded file into a permanent location.
        if (isset($file['name']['invoice'])) {
            // Make sure that the full file path is safe.
            $filepath = JPath::clean($path. DS ."components". DS ."com_invoicemanager". DS ."files". DS .strtolower($file['name']['invoice']));
            // Move the uploaded file.
            if(JFile::upload( $file['tmp_name']['invoice'], $filepath ))
            {
            $db =& JFactory::getDBO();
            $query = $db->getQuery(true);
            $query->update($db->nameQuote('#__invoicemanager'));
            $query->set($invoice.' = '.$db->quote($file['name']['invoice']));
            $query->where($db->nameQuote('id').'='.$db->quote($id));
            $db->setQuery($query);
            $db->query();
            }
        }