$disable_cols = array('status_id','item_price_out','item_customer', 'model_id','item_quantity');
if($this->db->map_unique('model_barcode', $_GET['barcode'], 'model_countable', 'model')) {
$disable_cols = array('status_id','item_price_out','item_customer', 'model_id','item_quantity');
if($this->db->map_unique('model_barcode', $_GET['barcode'], 'model_countable', 'model')) {