redmine/app/views/custom_fields/new.rhtml

<h2><%=l(:label_custom_field_new)%> (<%=l(@custom_field.type_name)%>)</h2>

<%= start_form_tag({:action => 'new'}, :class => "tabular") %>
  <%= render :partial => 'form', :locals => { :type => @custom_field.type } %>
  <%= hidden_field_tag 'type', @custom_field.type %>
  <%= submit_tag l(:button_save) %>
<%= end_form_tag %>