active_record_dirty_serialized_columns.rb

ActiveRecord::Base.class_eval do
  class_attribute :no_serialize_update
  self.no_serialize_update = false
end

ActiveRecord::AttributeMethods::Dirty.class_eval do

  # Serialized attributes should always be written in case they've been
  # changed in place.
  def keys_for_partial_update
    if self.no_serialize_update
      super
    else
      super + changed_serialized_columns
    end
  end

  def changed_serialized_columns
    # ??
  end


end