In your Ruby application, you can use following:
'Kamil Wdowicz'.slugize
'zażółć gęślą jąźń'.slugize
'zażółć gęślą jąźń'.slugize('_')
This will produce:
'kamil-wdowicz'
'zazolc-gesla-jazn'
'zazolc_gesla_jazn'
In your Gemfile, add the following:
gem 'slugize'
Run:
$ bundle install