rails--rails/activerecord/test/models/man.rb

class Man < ActiveRecord::Base
  has_one :face, :inverse_of => :man
  has_one :polymorphic_face, :class_name => 'Face', :as => :polymorphic_man, :inverse_of => :polymorphic_man
  has_many :interests, :inverse_of => :man
  has_many :polymorphic_interests, :class_name => 'Interest', :as => :polymorphic_man, :inverse_of => :polymorphic_man
  # These are "broken" inverse_of associations for the purposes of testing
  has_one :dirty_face, :class_name => 'Face', :inverse_of => :dirty_man
  has_many :secret_interests, :class_name => 'Interest', :inverse_of => :secret_man
end