gistfile1.txt

module Mongoid
  module Document
    module ClassMethods
      def HashOf(klass)
        hash_klass_name = "#{klass}Hash"
        hash_klass = Object.const_set(hash_klass_name.to_sym, Class.new(Hash))
        hash_klass.class_eval do
          define_singleton_method(:demongoize) do |obj|
            new( obj.merge(obj) { |k,v| k, klass.demongoize(v) } )
          end
        end
        hash_klass
      end
    end
  end
end