Refactoring into Model...need help

[ÜberBaller]

Hi, I'm fairly new to rails and am having a bit of trouble moving my
jqgrid code from the controller to the model. It worked fine in the
controller. I know that the model can't use params so I'm passing
those into a method, but when I look at the sql query it is not
passing all the arguements. TIA for any help.

class OligosController < ApplicationController
# GET /oligos
# GET /oligos.xml
def index
oligos = Oligo.search( params[:freezer], params[:cane], params
[:box], params[:boxname], params[:slot], params[:oligoname], params
[:sequence], params[:page], params[:sidx], params[:sord], params
[:rows], params[:_search] )

respond_to do |format|
format.html
format.json { render :json => oligos.to_jqgrid_json
([:id,:freezer,:cane,:box,:boxname,:slot,:oligoname,:sequence],
params
[:page], params[:rows], oligos.total_entries) }
end
end
end

class Oligo < ActiveRecord::Base

def self.search(freezer, cane, box, boxname, slot, oligoname,
sequence, page, sidx, sord, rows, _search)
find(:all) do
if :_search == "true"
freezer =~ "%#{freezer}%" if freezer.present?
cane =~ "%#{cane}%" if cane.present?
box =~ "%#{box}%" if box.present?
boxname =~ "%#{boxname}%" if boxname.present?
slot =~ "%#{slot}%" if slot.present?
oligoname =~ "%#{oligoname}%" if oligoname.present?
sequence =~ "%#{sequence}%" if sequence.present?
return
end
paginate :page => page, :per_page => rows
order_by "#{sidx} #{sord}"
end
end

end