Updated.

app/controllers/custom_galleries_controller.rb

@@ -133,7 +133,10 @@ class CustomGalleriesController < ApplicationController
   def self.custom_widget_data
     @custom_configs = CustomAlbumConfig.all.to_a
     ac = ActionController::Base.new
-    ac.render_to_string("custom_galleries/custom_widget_data",:locals=>{:@custom_data_field=>@custom_data_field,:@custom_configs=>@custom_configs,:@field_name=>@field_name})
+    ac.instance_variable_set(:@custom_data_field, @custom_data_field)
+    ac.instance_variable_set(:@custom_configs, @custom_configs)
+    ac.instance_variable_set(:@field_name, @field_name)
+    ac.render_to_string("custom_galleries/custom_widget_data")
   end
   def custom_album_widget
     @custom_album_setting = CustomAlbumSetting.first

app/models/custom_album.rb

@@ -45,7 +45,7 @@ class CustomAlbum
         target_model = custom_album_config.bind_model.constantize rescue nil
         if target_model
           target_record = target_model.where(custom_album_config.uid_field=>self.bind_uid).first
-          target_record.send(custom_album_config.custom_record_callback,num)
+          target_record.send(custom_album_config.custom_record_callback,num) if target_record
         end
       end
     end

source.txt

@@ -0,0 +1 @@
+http://gitlab.tp.rulingcom.com/chiu/custom_gallery.git