gistfile1.rbx

class Author < ActiveRecord::Base
  has_many :books do
    def correct
      map {|b| b.name}
    end
    
    def broken
      proxy_target.map {|b| b.name}
    end
  end
end


Author.first.books.broken     # => []
Author.first.books.correct    # => ["One", "Two"]