gistfile1.txt

module HasPersonProxy
  module ClassMethods
    def always_has_one_person
      self.instance_eval do
        has_one :person
        include InstanceMethods
        alias_method_chain :person, :proxy
      end
    end

    def always_belongs_to_person
      self.instance_eval do
        belongs_to :person
        include InstanceMethods
        alias_method_chain :person, :proxy
      end
    end
  end