require 'activity_stream' require 'activity_observer' ActiveRecord::Base.class_eval { include ActivityStream::ActiveRecord } ActiveRecord::Associations::AssociationProxy.class_eval { include ActivityStream::AssociationProxy } ActiveRecord::Associations::BelongsToAssociation.class_eval { include ActivityStream::BelongsToAssociation } ActiveRecord::Associations::HasOneAssociation.class_eval { include ActivityStream::HasOneAssociation } ActiveRecord::Associations::HasManyAssociation.class_eval { include ActivityStream::HasManyAssociation } ActiveRecord::Associations::BelongsToPolymorphicAssociation.class_eval { include ActivityStream::BelongsToPolymorphicAssociation }