n-level tree based hierarchical URLs with Rails and acts_as_tree

gistfile1.rb

## n-level tree based hierarchical URLs with Rails and acts_as_tree
## be free to adopt this to acts_as_nested_set or whatever

# routes.rb
map.article_deeplink ':locale/*path/:slug', :controller => 'articles', :action => 'show'

# generate the url
# the array building function should be moved into an instance method
article_deeplink_path(:path => @article.ancestors.reverse.map(&:slug), :slug => @article.slug)

# params which are generated, *path gets globbed
# {:action=>"show", :path=>["ruby_on_rails_20_installieren", "knowhow"], :slug=>"test-2", :controller=>"articles"}

# controller
def show
  Article.find_by_slug(params[:slug])
end