moving pagination code to model

   I have the controller code as below

  # step 1: set the variables you'll need
            page = (params[:page] ||= 1).to_i
            items_per_page = 20
            offset = (page - 1) * items_per_page
           # step 2: instead of performing the full find, just find the
record count

            @search_sd_ticket_count_result =
ServiceDeskTicket.find_where(:all,:select=>'count(*) as count1' ) do




            # step 3: create a Paginator, the second variable has to be
the number of ALL items on all pages
            @search_sd_ticket_result_pages =,
record_count, items_per_page, page)

            # step 4: only find the requested subset of
            @search_sd_ticket_result =
) do |sd|


How can I move this code to model so that to call it other places also