To avoid repeated pagination code

Rails
1

Hi
Below is the code for controller service_desk show action(some
portion only)
def show
@sd_attachments=service_desk_ticket.service_desk_attachments.paginate
:page => params[:page], :per_page => 15
@sd_activities=ServiceDeskActivity.find_all_by_service_desk_ticket_id(service_desk_ticket.id)paginate
:page => params[:page], :per_page => 15

end

HERE THE show.rhtml contains differnt tabs like

Attachments,Activities etc…
And I use Ajax for pagination in all these tabs…Suppose for example
sd_attachments first show say 15 attachments, then to get next 15, I
again have to write the same pagination code as in show for this
sd_attachments in the controller…(In another file)And by using RJS
replacing the div (The sd_attachment is complete inside a div)…BUT THE
PROBLEM IS EVEN IF THE CODE FOR PAGINATION IS THERE IN show ACTION I
HAVE TO WRITE IT AGAIN AND AGAIN FOR EACH TAB…HOW CAN I AVOID THIS.?

Sijo