Rails 5 adds after_commit callbacks aliases

Rails 4.x has after_commit callback. after_commit is called after a record has been created, updated or destroyed.

class User < ActiveRecord::Base
  after_commit :send_welcome_mail, on: create
  after_commit :send_profile_update_notification, on: update
  after_commit :remove_profile_data, on: destroy

  def send_welcome_mail
    EmailSender.send_welcome_mail(email: email)
  end
end

Rails 5 had added following three aliases.

• after_create_commit
• after_update_commit
• after_destroy_commit

Here is revised code after using these aliases.

class User < ApplicationRecord
  after_create_commit	:send_welcome_mail
  after_update_commit	:send_profile_update_notification
  after_destroy_commit	:remove_profile_data

  def send_welcome_mail
    EmailSender.send_welcome_mail(email: email)
  end
end

We earlier stated that after_commit callback is executed at the end of transaction. Using after_commit with a transaction block can be tricky. Please checkout our earlier post about Gotcha with after_commit callback in Rails .