app/views/licenses/_form.html.erb
<%= error_messages_for :license %>
<%= form_for :license do |f| %>
<%= hidden_field_tag(:license_id, params[:license_id]) %>
<%= required labelled_form_field(_('Name'), f.text_field(:name)) %>
<%= labelled_form_field(_('License url'), f.text_field(:url)) %>
<%= button_bar do %>
<%= submit_button(:save, _('Save'), :cancel => { :action => 'index' })%>
<% end %>
<% end %>