app/views/protips/_trending_topics.html.haml
- cache ['v1','trending_protip_topics', ENV['FEATURED_TOPICS'], count], expires_in: 1.hour do
- trending_protips_topics(count).in_groups_of(4, false) do |group|
%ul.topics-list
- group.each do |topic|
%li{style: right_border_css(topic) }
%a{href: topic_protips_path(topic)}
%h3= topic