app/controllers/journals_controller.rb
class JournalsController < ApplicationController
def show
@versions = PaperTrail::Version.order(created_at: :desc).page(params[:page])
authorize PaperTrail::Version
@users = Person
.where(id: @versions.map(&:whodunnit).uniq.compact)
.index_by { |p| p.id.to_s }
end
end