# File lib/active_support/inflector/transliterate.rb, line 82 def parameterize(string, sep = '-') # replace accented chars with their ascii equivalents parameterized_string = transliterate(string) # Turn unwanted chars into the separator parameterized_string.gsub!(/[^a-z0-9\-_]+/i, sep) unless sep.nil? || sep.empty? re_sep = Regexp.escape(sep) # No more than one of the separator in a row. parameterized_string.gsub!(/#{re_sep}{2,}/, sep) # Remove leading/trailing separator. parameterized_string.gsub!(/^#{re_sep}|#{re_sep}$/i, '') end parameterized_string.downcase end