will_paginate with conditions

Hi, I've just switched to will_paginate, which is impressive and easy to use!

I have a question regarding conditions:

I build a query using values from the params that were entered onto a web form using something like

:conditions => [" foo like x and bar like y", params[:x]+"%", params[:y]+"%"]

It would appear that the conditions need to be respecified on each page so I have had to remember them in the session:

unless params[:page]       session[:search] = ["category_id = ? and foo like ?                      and bar like ?",           params[:item][:category_id],           params[:item][:foo]+"%",           params[:item][:bar]+"%"]     end     @items = Item.paginate :page => params[:page],                            :conditions => session[:search]

This works, but have I got it right, or is there a better way?