snippetsmania.com
Post and share your code snippets

require 'iconv'
module PermalinkFu
class << self
attr_accessor :translation_to
attr_accessor :translation_from

def escape(str)
s = Iconv.iconv(translation_to, translation_from, str).to_s
s.gsub!(/W+/, ' ') # all non-word chars to spaces
s.strip!            # ohh la la
s.downcase!         #
s.gsub!(/ +/, '-') # spaces to dashes, preferred separator char everywhere
s
end
end

def has_permalink(attr_name, permalink_field = nil)
permalink_field ||= 'permalink'
after_validation { |record| record.send("#{permalink_field}=", PermalinkFu.escape(record.send(attr_name).to_s)) if record.send(permalink_field).to_s.empty? }
end
end

PermalinkFu.translation_to   = 'ascii//ignore//translit'
PermalinkFu.translation_from = 'utf-8'

source