UsersController#index.rb

# minor improvement to http://blog.js.hu/2010/01/07/unobtrusive-jqgrid-on-rails-a-la-2dconcept-but-with-searchlogic/
# (would have commented but blog.js.hu isn't sending me a registration email)

      if params[:_search].present?
        filters = {}

        if params[:_search] == "true"
          searchable_columns.each do |param|
            filters["#{param}_like"] = params[param] if params[param].present?
          end
        end

        if params[:sidx].present?
          order = params[:sord] == "desc" ? "descend" : "ascend"
          filters[:order] = "#{order}_by_#{params[:sidx]}"
        end

        finder = finder.search(filters)
      end