Rails ActiveRecord在after_save回调中使用最近保存的记录ID [英] Rails ActiveRecord using recently saved record id in after_save callback

问题描述

我想在after_save回调中使用最近存储的记录ID，如果是的话，是否可以使用？


after_save：create_children



def create_children

  self.id

end


更新：
对不起，我的保存功能出现了问题，我的错，很遗憾浪费你的时间

感谢

解决方案

我刚刚尝试过：

  class Thing< ActiveRecord :: Base 
 after_save：test_me 
 
 def test_me 
 puts self.id 
 end 
 end 
  
 
 
 
并在控制台中：
  $ rails c 
加载开发环境（Rails 3.0.4）
>> x = Thing.new 
 => ＃< Thing id：nil，name：nil，created_at：nil，updated_at：nil> 
>> x.save 
 2 
 => true 
>> y = Thing.create 
 3 
 => ＃< Thing id：3，name：nil，created_at：2011-04-27 15:57:03，updated_at：2011-04-27 15:57:03> 
  
您的模型还有什么变化？ 
 
I want to use recently stored record ID in after_save callback, is that possible if yes how?


after_save :create_children



def create_children

 self.id

end


Update:
Sorry there was something going wrong with my save function, my bad, sorry to waste your time

Thanks
解决方案
I just tried it with this:
 class Thing < ActiveRecord::Base
   after_save :test_me

   def test_me
     puts self.id
   end
 end
and in the console:
$ rails c
Loading development environment (Rails 3.0.4)
>> x=Thing.new
=> #<Thing id: nil, name: nil, created_at: nil, updated_at: nil>
>> x.save
2
=> true
>> y=Thing.create
3
=> #<Thing id: 3, name: nil, created_at: "2011-04-27 15:57:03", updated_at: "2011-04-27 15:57:03">
What else is going on in your model? 

                        
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