ActiveRecord Inheritance ClassMethods module ClassMethods Ruby on Rails 3.2.22.5 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: … 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 No documentation comment. Attributes ActiveRecord::Inheritance::ClassMethods#abstract_class Methods (defined here) # abstract_class? # base_class # class_of_active_record_descendant # compute_type # descends_from_active_record? # instantiate # sti_name # symbolized_base_class # symbolized_sti_name Private methods (3) Implementation detail — not part of the public API. # find_sti_class # type_condition # use_identity_map