params question

I have a question regarding params usage. I have a view that uses a
number of params hashes to display some information. I also have some
links and when I click on these links I want to have a back button to
return to the previous page. Is there a better way to save the params
instead of having to pass them all through two links (the main link
and the back link) It seems like there is a better way. Thanks.

Store them in the session, rather than params.