app/views/areas/_form.html.erb
<%= form_for(@area) do |f| %>
<%= f.error_messages %>
<div class="field">
<%= f.label :name %><br />
<%= f.text_field :name -%>
</div>
<div class="field">
<%= f.label :address %><br />
<%= f.text_area :address -%>
</div>
<div class="actions">
<%= f.submit :disable_with => t('page.wait') %>
</div>
<% end %>