<%= message %><br />
<% end %>
<% else %>
- <% if obj.attribute_editable?(attr) and (!defined?(editable) || editable) %>
+ <% if attr and obj.attribute_editable?(attr) and (!defined?(editable) || editable) %>
<% if resource_class_for_uuid(attrvalue, {referring_object: obj, referring_attr: attr}) %>
<%= link_to_if_arvados_object attrvalue, {referring_attr: attr, referring_object: obj, with_class_name: true, friendly_name: true} %>
<br>