<p><label for="account_type">Type</label><br/> <%= select 'account', 'account_type', 'user' %></p> <!--[eoform:account]-->
How can I add other elements i.e. guest, adminstrator to the list in the selection box.
<%= select 'account', 'account_type', [['user','user], ['guest','guest],['administrator','administrator]] %></p>
should work. But if you had an AccountTypes model the API docs show you a much more elegant way to achieve it: