Pagination attributes

I have created a pagination with my own conditions :

@timesheets_pages = Paginator.new self, count, 30, @params[‘page’]

@timesheets = Timesheet.find :all,:include 

=>{:employee=>[:location,:division]},
:conditions => ["employees.location=?
and employees.division=? and start_date>? and end_date < ?
",@location.id,@division.id,@start_date,@end_date],
:order=> “timesheets.start_date
desc”,
:limit =>
@timesheets_pages.items_per_page,
:offset =>
@timesheets_pages.current.offset

Where is the best place to store the filter parameters
(@location,@division,@start_date,@end_date) of the find? Each time the
find is run it must recall the params of the find. I’m currently storing
them in the session. What is the best way?

Thanks,
Chris