Monkey patch hash so it behaves like OpenStruct

hash_patch.rb

class Hash
  alias :__values :values
  def values
    self["values"] || __values
  end

  alias :__method_missing :method_missing
  def method_missing(name, *args, &block)
    if args.empty?
      self[name.to_s] || self[name]
    elsif args.size == 1 && name =~ /=$/
      class <<self; self; end.send :attr_accessor, name[0..-2]
      self.send name, args.first
   else
      __method_missing(name, *args, &block)
     end
   end
end