app/views/active_scaffold_overrides/_list_column_headings.html.erb
<%
sorting = active_scaffold_config.list.user.sorting
default_sorting = active_scaffold_config.list.user.default_sorting
-%>
<% columns.each do |column| -%>
<%= render_column_heading(column, sorting, sorting.next_sorting_of(column, default_sorting.sorts_on?(column))) %>
<% end -%>
<% unless grouped_search? -%>
<th class="actions">
</th>
<% end -%>