A question about CI cart

[eluser]China-cier[/eluser]
thanks theprodigy
now my requirement just support a item.that is user just can add one product in cart at the same time.so i want to get this rowid,and record it for next page.

now i readed the cart source

=======================================================================
if (isset($items['options']) AND count($items['options']) > 0)
{
$rowid = md5($items['id'].implode('', $items['options']));
}
else
{
// No options were submitted so we simply MD5 the product ID.
// Technically, we don't need to MD5 the ID in this case, but it makes
// sense to standardize the format of array indexes for both conditions
$rowid = md5($items['id']);
}
=============================================================================
now i can get the row id by this algorithm.but i do not think it's elegant way.....

so i want to get more sound.
so do you understard?