after_commit

This callback is called after a record has been created, updated, or destroyed.

You can specify that the callback should only be fired by a certain action with the :on option:

after_commit :do_foo, on: :create
after_commit :do_bar, on: :update
after_commit :do_baz, on: :destroy

after_commit :do_foo_bar, on: [:create, :update]
after_commit :do_bar_baz, on: [:update, :destroy]

Note that transactional fixtures do not play well with this feature. Please use the test_after_commit gem to have these hooks fired in tests.