item.rb

class Item < ActiveRecord::Base
  serialize :attrs

  def method_missing(name, *args)
    super
  rescue NoMethodError
    self.attrs = {} if self.attrs.nil?
    if args.empty?
      self.attrs[name.to_s]
    else
      self.attrs[name.to_s.sub("=","")] = args.first
    end
  end

end