module FavoritesHelper
  def sortable(title, column)
    direction = column == sort_column && sort_direction == 'asc' ? 'desc' : 'asc'
    link_to title, :sort => column, :direction => direction
  end

  def sorting_arrow(column)
    if sort_column == column
      direction = column == sort_column && sort_direction == 'asc' ? 'desc' : 'asc'
      if direction == 'asc'
        image_tag 'up.png'
      else
        image_tag 'down.png'
      end
    end
  end
end