ActiveRecord AdapterError class AdapterError Ruby on Rails 8.0.4 Since v7.1.6 Available in: v7.1.6 v7.2.3 v8.0.4 v8.1.2 Compare with: … v7.1.6 v7.2.3 v8.1.2 Superclass for all errors raised from an Active Record adapter. Inherits from ActiveRecord::ActiveRecordError Attributes ActiveRecord::AdapterError#connection_pool Methods (defined here) self. new Used by Subclasses (3) ActiveRecord::ConnectionNotEstablished ActiveRecord::SQLWarning ActiveRecord::StatementInvalid