Fix preview silently failing when announcement has carousel images

app/controllers/admin/announcements_controller.rb

@@ -581,9 +581,33 @@ class Admin::AnnouncementsController < OrbitAdminController
           bulletin.bulletin_links << link
         end
       end
+      
+      if !bulletin_data['bulletin_carousel_images_attributes'].blank?
+        bulletin.bulletin_carousel_images = []
+        bulletin_data['bulletin_carousel_images_attributes'].each do |key, carousel_image|
+          next if !carousel_image['_destroy'].blank?
+          image = nil
+          if carousel_image['id'].blank?
+            image = BulletinCarouselImage.new(carousel_image)
+            image.bulletin_id = bulletin.id
+            image.save
+          else
+            org_image = BulletinCarouselImage.find(carousel_image['id'])
+            image = org_image.clone
+            image.bulletin_id = bulletin.id
+            image.file = org_image.file
+            carousel_image.delete('id')
+            carousel_image.delete('_destroy')
+            image.update_attributes(carousel_image)
+          end
+          image.save
+          bulletin.bulletin_carousel_images << image
+        end
+      end
 
       bulletin_data.delete('bulletin_files_attributes')
       bulletin_data.delete('bulletin_links_attributes')
+      bulletin_data.delete('bulletin_carousel_images_attributes')
       bulletin.update_attributes(bulletin_data)
       bulletin.copy_id = params['bulletin_id']
     else