title: Rails i18n validation on inputs (not error messages)
body: <p>I'm writing an app that must be able to accept more than just the English alphabet.</p>
  
  <p>Everything I search for points me to error validation messages, which I already have set up for translation; that's no problem.</p>
  
  <p>Does anyone know of a resource in ruby/rails that defines acceptable alphabets by language/region/country?</p>