Rails 3: How to identify after_commit action in observers? (create/update/destroy)

Question

I have an observer and I register an after_commit callback. How can I tell whether it was fired after create or update? I can tell an item was destroyed by asking

Answer 1

Take a look at the test code: https://github.com/rails/rails/blob/master/activerecord/test/cases/transaction_callbacks_test.rb

There you can find:

after_commit(:on => :create)
after_commit(:on => :update)
after_commit(:on => :destroy)

and

after_rollback(:on => :create)
after_rollback(:on => :update)
after_rollback(:on => :destroy)