breadcrumb adaptado para TwitterBootstrap. le falta optimizacion.

breadcrumb.rb

def breadcrumbs(include_home = true)
    levels = request.path.split('?')[0].split('/')
    levels.delete_at(0)
    links = content_tag("li") { content_tag('a', "Inicio", :href => root_path ) if include_home }
    nocrumb = []
    levels.each_with_index do |level, index|
      level = level.gsub(/^[0-9]+\-/,"") #if levels[index-1] == "photos"
      level = level.gsub("-", " ")
      if index+1 == levels.length
      elsif !nocrumb.include?(level)
        links += content_tag("li") { content_tag('a', level.upcase, :href => '/'+levels[0..index].join('/')) }
      end
    end
    content_tag("ol", links, :class => "breadcrumb")
  end