reverse_sql_order

# File activerecord/lib/active_record/base.rb, line 1472
        def reverse_sql_order(order_query)
          reversed_query = order_query.split(/,/).each { |s|
            if s.match(/\s(asc|ASC)$/)
              s.gsub!(/\s(asc|ASC)$/, ' DESC')
            elsif s.match(/\s(desc|DESC)$/)
              s.gsub!(/\s(desc|DESC)$/, ' ASC')
            elsif !s.match(/\s(asc|ASC|desc|DESC)$/)
              s.concat(' DESC')
            end
          }.join(',')
        end