While this shouldn't occur, if for some reason a host status has no type column the name_column helper will cause the page to fail loading with

 
Backtrace for 'comparison of String with nil failed' error (ActionView::Template::Error): comparison of String with nil failed
 | /usr/share/foreman/app/helpers/hosts_helper.rb:97:in `sort_by'
 | /usr/share/foreman/app/helpers/hosts_helper.rb:97:in `name_column'
...

We can avoid this failure easily by being more defensive in our code.