<div class="control-group" id="<%= attribute_id %>">
  <%= form.label attribute, label_text, { :class => "control-label" } %>
  <div class="controls">
    <%#= form.datetime_select attribute, options, html_options %>
    <%= form.text_field attribute, options %>
  </div>
</div>

<div class="control-group" id="<%= attribute_id %>">
  <%= form.label attribute, label_text, { :class => "control-label" } %>
  <div class="controls">
    <%= form.datetime_select attribute, options, html_options %>
    <%#= form.text_field attribute, options %>
  </div>
</div>

Use datetime_select for datetime view template
Use datetime_select for datetime view template
