ActiveRecord Inheritance ClassMethods module ClassMethods Ruby on Rails 7.2.3 Since v3.2.22.5 Available in: v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2 Compare with: … v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v8.0.4 v8.1.2 No documentation comment. Attributes ActiveRecord::Inheritance::ClassMethods#abstract_class ActiveRecord::Inheritance::ClassMethods#base_class Methods (defined here) # abstract_class? # base_class? # compute_type # descends_from_active_record? # new # polymorphic_class_for # polymorphic_name # primary_abstract_class # sti_class_for # sti_name Private methods (6) Implementation detail — not part of the public API. # discriminate_class_for_record # find_sti_class # inherited # subclass_from_attributes # type_condition # using_single_table_inheritance?