class Topic < ActiveRecord::Base named_scope :base named_scope :written_before, lambda { |time| if time { :conditions => ['written_on < ?', time] } end } named_scope :approved, :conditions => {:approved => true} named_scope :rejected, :conditions => {:approved => false} named_scope :by_lifo, :conditions => {:author_name => 'lifo'} named_scope :approved_as_hash_condition, :conditions => {:topics => {:approved => true}} named_scope 'approved_as_string', :conditions => {:approved => true} named_scope :replied, :conditions => ['replies_count > 0'] named_scope :anonymous_extension do def one 1 end end module NamedExtension def two 2 end end module MultipleExtensionOne def extension_one 1 end end module MultipleExtensionTwo def extension_two 2 end end named_scope :named_extension, :extend => NamedExtension named_scope :multiple_extensions, :extend => [MultipleExtensionTwo, MultipleExtensionOne] has_many :replies, :dependent => :destroy, :foreign_key => "parent_id" has_many :replies_with_primary_key, :class_name => "Reply", :dependent => :destroy, :primary_key => "title", :foreign_key => "parent_title" serialize :content before_create :default_written_on before_destroy :destroy_children def parent Topic.find(parent_id) end # trivial method for testing Array#to_xml with :methods def topic_id id end before_validation :before_validation_for_transaction before_save :before_save_for_transaction before_destroy :before_destroy_for_transaction after_save :after_save_for_transaction after_create :after_create_for_transaction after_initialize :set_email_address protected def approved=(val) @custom_approved = val write_attribute(:approved, val) end def default_written_on self.written_on = Time.now unless attribute_present?("written_on") end def destroy_children self.class.delete_all "parent_id = #{id}" end def set_email_address if self.new_record? self.author_email_address = 'test@test.com' end end def before_validation_for_transaction; end def before_save_for_transaction; end def before_destroy_for_transaction; end def after_save_for_transaction; end def after_create_for_transaction; end end module Web class Topic < ActiveRecord::Base has_many :replies, :dependent => :destroy, :foreign_key => "parent_id", :class_name => 'Web::Reply' end end