Show changes to event commercials in event changelog

app/controllers/admin/events_controller.rb

@@ -86,6 +86,7 @@ module Admin
       @comment_count = @event.comment_threads.count
       @ratings = @event.votes.includes(:user)
       @difficulty_levels = @program.difficulty_levels
+      @versions = @event.versions | PaperTrail::Version.where(item_type: 'Commercial', item_id: @event.commercials.pluck(:id))
     end
 
     def edit

app/helpers/application_helper.rb

@@ -491,4 +491,14 @@ module ApplicationHelper
       end
     end
   end
+
+  def general_change_description(version)
+    if version.event == 'create'
+      'created new'
+    elsif version.event == 'update'
+      "updated #{updated_attributes(version)} of"
+    else
+      'deleted'
+    end
+  end
 end

app/models/ability.rb

@@ -212,7 +212,7 @@ class Ability
     end
 
     can [:index, :revert_object, :revert_attribute], PaperTrail::Version do |version|
-      version.item_type == 'Event' && (conf_ids_for_cfp.include? version.conference_id)
+      %w(Event Commercial).include?(version.item_type) && (conf_ids_for_cfp.include? version.conference_id)
     end
   end
 

app/views/admin/events/show.html.haml

@@ -15,15 +15,23 @@
             %th Description
             %th Actions
           %tbody
-            - @event.versions.each do |version|
+            - @versions.each do |version|
               %tr
                 %td
                   = version.id
                 %td
                   %p
                     = change_creator_link(version.whodunnit)
-                    = event_change_description(version)
-                    = "event #{@event.title}"
+
+                    - if version.item_type == 'Event'
+                      = event_change_description(version)
+                      = "event #{@event.title}"
+
+                    - else
+                      = general_change_description(version)
+                      =  link_to 'commercial',
+                                edit_admin_conference_program_event_path(conference_id: @conference.short_title,
+                                        id: @event.id, anchor: 'commercials-content')
 
                     %small.text-muted
                       = distance_of_time_in_words(Time.now,version.created_at) + ' ago'

app/views/admin/versions/index.html.haml

@@ -42,12 +42,7 @@
               = user_change_description(version)
 
             - else
-              - if version.event == 'create'
-                = 'created new'
-              - elsif version.event == 'update'
-                = "updated #{updated_attributes(version)} of"
-              - else
-                = 'deleted'
+              = general_change_description(version)
 
             =  render partial: 'object_desc_and_link', locals: { version: version }