class Reference < ActiveRecord::Base belongs_to :person belongs_to :job has_many :agents_posts_authors, :through => :person class << self attr_accessor :make_comments end before_destroy :make_comments def make_comments if self.class.make_comments person.update_attributes :comments => "Reference destroyed" end end end class BadReference < ActiveRecord::Base self.table_name = 'references' default_scope where(:favourite => false) end