How to loop through multiple values of same URL parameter name? (ex. ?id=x&id=y&id=z)

How to loop through multiple values of same URL parameter name? (ex. ?id=x&id=y&id=z)

Hi,

I have an HTML view that has two URL parameters, client and orderid. However, while there is only one value for the client, there may be multiple values for the orderid parameter. For example, my URL looks like this:

http://..............?client=PW&orderid=PW233&orderid=PW234&orderid=PW239

My question is, how can I loop through each of those values?

I think I have to put them into a list, but when I try something like orders = input.orderid.toList(), only the first value is added.

Thanks.