Rails ActiveRecord using recently saved record id in after_save callback

Question

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

score 5 · Accepted Answer · answered Apr 27 '11 at 15:58

5

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?

answered Apr 27 '11 at 15:58

chrismealy

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At least in MySql, the auto increment id column has to be set as the primary key. I had a problem where my primary key was made up of two fields -- and so ActiveRecord wouldn't read the Id. I changed it to just the ID field and the code started working. – Vineel Shah Sep 03 '15 at 18:33

score 1 · Answer 2 · answered Apr 27 '11 at 14:11

1

if you call reload() after saving the object, the self.id will be populated

answered Apr 27 '11 at 14:11

SomeDudeSomewhere

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I tried it out, but it didnt work – wael34218 Apr 27 '11 at 14:15
I tried to use after_create as well with no luck – wael34218 Apr 27 '11 at 14:24
**Sugesstion**: If it is a post-processing and shouldn't affect saving of the model object, you can do it in your `after_commit` callback – Abhishek Kumar Mar 11 '16 at 11:36

Rails ActiveRecord using recently saved record id in after_save callback

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