plugins/elasticsearch/views/elasticsearch_plugin/_search_option.html.erb
<ul>
<% for type,value in @searchable_types %>
<li class="select-search-type <%= "active" if type == @selected_type %>">
<%= link_to value, "?selected_type=#{type}&query=#{@query}&categories=#{@selected_categories.join(',')}"%>
</li>
<% end %>
</ul>