gistfile1.rb

column 'Endret', sortable: 'reviews.updated_at' do |review|
      html << pretty_format(review.updated_at)

      unless review.moderations.last.nil?
        updated_by = review.moderations.order('updated_at DESC').first.user.email.sub(/@.*/, '')
        html << raw("<div class=\"toned-down\"><br>#{updated_by}</div>")
      end
    end