app/views/content/display/_sidelinks.html.erb
<%
creating = defined?(creating) && creating
editing = defined?(editing) && editing
%>
<%= render partial: 'content/display/sidebar/categories', locals: { content: content, creating: creating, editing: editing } %>
<%= render partial: 'content/display/sidebar/references', locals: { content: content, creating: creating, editing: editing } %>
<% if editing %>
<%= render partial: 'content/display/sidebar/more', locals: { content: content, creating: creating, editing: editing } %>
<% end %>