ActiveModel Attributes ClassMethods module ClassMethods Ruby on Rails 7.0.10 Since v5.2.8.1 Available in: 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: … v5.2.8.1 v6.0.6 v6.1.7.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2 No documentation comment. Constants ActiveModel::Attributes::ClassMethods::NO_DEFAULT_PROVIDED Methods (defined here) # attribute # attribute_names Private methods (2) Implementation detail — not part of the public API. # define_default_attribute # define_method_attribute=