will_paginate with jqgrid

[ndemoreau]

I'm trying to sort my jqgrid like this:

def index
tup = SmartTuple.new(" AND ")
tup << ["firstname like ?", "%#{params[:firstname]}%"] if params[:firstname].present?
tup << ["lastname like ?", "%#{params[:lastname]}%"] if params[:lastname].present?
tup << ["email like ?", "%#{params[:email]}%"] if params[:email].present?
tup << ["function like ?", "%#{params[:function]}%"] if params[:function].present?
users = User.find(:all, :conditions => tup.compile).paginate :page => params[:page], :per_page => params[:rows], :order => params[:sixd]

respond_to do |format|
  format.html
  format.json { render :json => users.to_jqgrid_json([:id,:firstname,:lastname,:email,:function],
                                                     params[:page], params[:rows], users.total_entries) }
end

end

The page parameters are correctly applied but it doesn't sort the way it should.

What can be wrong?

My querystring is following one:

{"q"=>"1", "_search"=>"false", "nd"=>"1301936699853", "rows"=>"10", "page"=>"1", "sidx"=>"firstname", "sord"=>"asc"}

Thanks,

Nicolas.