<% Cohortly::Cohorts.group_names.sort.each_slice(3) do |groups| %>

<% groups.sort.each do |group| %>

<%= check_box_tag 'cohortly_metric[groups][]', group, params[:cohortly_metric] && params[:cohortly_metric][:groups] && params[:cohortly_metric][:groups].include?(group) %><%= group %>

<% end %>