ruby-on-rails – 用ActiveRecord冒泡嵌套事务失败

我在服务对象中有一个方法,该方法组合应该包含在事务中的操作.其中一些操作也包裹在事务中.例如：

class PostCreator
   def create
      ActiveRecord::Base.transaction do
        post.do_this
        post.do_that
        user.do_more(post,other_stuff)
      end
   end
 end

 def Post
   def do_this
     transaction do; ...; end
   end
 end

我需要任何嵌套的失败来一直到顶部,但我不知道如何发生这种情况,而在nested transactions的ActiveRecord文档似乎没有提供一个解决方案.从文档：

# Standard nesTing

User.transaction do
  User.create(username: 'Kotori')
  User.transaction do
    User.create(username: 'Nemu')
    raise ActiveRecord::rollBACk    #  This won't bubble up:
                                    #  _Both_ users will still be created.
  end
end

# nesTing with `requires_new: true` on the nested transaction

User.transaction do
  User.create(username: 'Kotori')
  User.transaction(requires_new: truE) do
    User.create(username: 'Nemu')
    raise ActiveRecord::rollBACk    #  This won't bubble up either
                                    #  "Kotori" will still be created.
  end
end

User.transaction do
  User.create(username: 'Kotori')
  raise ActiveRecord::rollBACk unless User.transaction(requires_new: truE) do
    User.create(username: 'Nemu')
    raise ActiveRecord::rollBACk
  end
end