title: Change error field name in Rails
body: <p>I'm wondering if there's a way to change the field name for a validation error it's associated with. For example, if I submit First Name (really <code>fname</code> in the table) without any data, it yells <code>Fname can't be blank.</code></p>
  
  <p>Is it possible to change this to <code>First Name can't be blank</code>?</p>