A not so coll rollback user

my_user.rb

class User < ApplicationRecord
  attr_accessor :rollback

  after_save :potentially_rollback

  def potentially_rollback
    raise ActiveRecord::Rollback if rollback
  end
end

rollback_in_save_in_nested.rb

User.transaction do
  User.create(name: 'Kotori')
  User.create(name: "someone", rollback: true)
end