Marshal serializer for ActiveRecord 4.

lib_utils_coders_marshal.rb

module Coders
  class Marshal

    attr_reader :klass

    def initialize(klass)
      @klass = klass
    end

    def load(data)
      if data
        ::Marshal.load(data)
      else
        klass.new
      end
    rescue ArgumentError
      klass.new
    end

    def dump(data)
      ::Marshal.dump(data)
    end
  end
end

class User < ActiveRecord::Base
  serialize :settings, Coders::Marshal.new(Hash)
end