#228 Sortable Table Columns

Railscasts - Sortable Table Columns:

class ProductsController < ApplicationController helper_method :sort_column, :sort_direction def index @products = Product.order(sort_column + " " + sort_direction) end # ... private def sort_column Product.column_names.include?(params[:sort]) ? params[:sort] : "name" end def sort_direction %w[asc desc].include?(params[:direction]) ? params[:direction] : "asc" end end

Full article: http://railscasts.com/episodes/228-sortable-table-columns