Ruby convert IDN domain from Punycode to Unicode

Question

I\'m writing a Rails app that needs to convert an IDN domain name from Punycode into its Unicode equivalent. I tried installing the idn gem that has bindings to GNU LibIDN,

Answer 1

Try the simpleidn gem. It works with Ruby 1.8.7 and 1.9.2.

Edit your Gemfile:

gem 'simpleidn'

then you can enter the command as follows:

SimpleIDN.to_unicode("xn--mllerriis-l8a.com")
=> "møllerriis.com"

SimpleIDN.to_ascii("møllerriis.com")
=> "xn--mllerriis-l8a.com"