To avoid timeouts caused by excessive data

app/controllers/admin/images_controller.rb

@@ -21,34 +21,46 @@ class Admin::ImagesController < OrbitAdminController
 		@images = @album.album_images.asc(:order)
 	end
 
-	def changeorder
-		type = params[:type]
-		if type == "imgholder"
-			album = Album.find(params[:album_id]) rescue nil
-			images = params[:imageids]
-			images.each_with_index.reverse_each do |image, i|
-				img = AlbumImage.find(image) rescue nil
-				if !img.nil?
-					img.order = i
-					img.save 
-				end
-			end
-			if album
-				album.update(:min_order=>-1)
-			end
-		elsif type == "orbit_gallery"
-			albums = params[:imageids]
-			albums.each_with_index.reverse_each do |albumid, i|
-				album = Album.find(albumid) rescue nil
-				if !album.nil?
-					album.order = i
-					album.save 
-				end
-			end
-			AlbumSetting.update_all(:min_order=>-1)
-		end
-    	render :json => {"success" => true}.to_json
-  	end
+    def changeorder
+      type = params[:type]
+      if type == "imgholder"
+        album = Album.find(params[:album_id]) rescue nil
+        images = params[:imageids]
+        operations = []
+        images.each_with_index.reverse_each do |image, i|
+          next if image.blank?
+          oid = begin; BSON::ObjectId(image); rescue; nil; end
+          next if oid.nil?
+          operations << {
+            update_one: {
+              filter: { _id: oid },
+              update: { "$set" => { order: i } }
+            }
+          }
+        end
+        AlbumImage.collection.bulk_write(operations) if operations.any?
+        if album
+          album.update(:min_order=>-1)
+        end
+      elsif type == "orbit_gallery"
+        albums = params[:imageids]
+        operations = []
+        albums.each_with_index.reverse_each do |albumid, i|
+          next if albumid.blank?
+          oid = begin; BSON::ObjectId(albumid); rescue; nil; end
+          next if oid.nil?
+          operations << {
+            update_one: {
+              filter: { _id: oid },
+              update: { "$set" => { order: i } }
+            }
+          }
+        end
+        Album.collection.bulk_write(operations) if operations.any?
+        AlbumSetting.update_all(:min_order=>-1)
+      end
+      render :json => {"success" => true}.to_json
+    end
 
 	def delete_photos
 		images = params['images']