gistfile1.rhtml

<% form_for @search do |f| %>
  <p>
    <%= f.label :starttime %>
    <br />
    After: <%= f.datetime_select :created_on_gte, :size => 12 %>
    <br />
    Before: <%= f.datetime_select :created_on_lte, :size => 12 %>
  </p>
  <input type='submit' value='search' />
<% end %>