Run the given method after save, but before transaction is committed

Optionally you can pass an if or unless argument which allows you to run this conditionally. The symbol should reference a method you've defined that returns a truthy/falsey value

This is a great place to do other database saves because if something goes wrong the whole transaction would be rolled back.

The newly saved record will be passed to the method.

class SaveComment < Comment::SaveOperation
  after_save touch_post

  private def touch_post(comment : Comment)
    SavePost.update!(comment.post!, updated_at: Time.utc)
  end
end

This is not a good place to do things like send messages, enqueue background jobs, or charge payments. Since the transaction could be rolled back the record may not be persisted to the database. Instead use after_commit

Run the given block after save, but before transaction is committed

Optionally you can pass an if or unless argument which allows you to run this conditionally. The symbol should reference a method you've defined that returns a truthy/falsey value

This is a great place to do other database saves because if something goes wrong the whole transaction would be rolled back.

The newly saved record will be passed to the method.

class SaveComment < Comment::SaveOperation
  after_save do |comment|
    SavePost.update!(comment.post!, updated_at: Time.utc)
  end
end

This is not a good place to do things like send messages, enqueue background jobs, or charge payments. Since the transaction could be rolled back the record may not be persisted to the database. Instead use after_commit

Run the given method before saving or creating for SaveOperation

This runs before saving and before the database transaction is started. You can set defaults, validate, or perform any other setup necessary for saving.

Optionally you can pass an if or unless argument which allows you to run this conditionally. The symbol should reference a method you've defined that returns a truthy/falsey value

before_save :run_validations
before_save :validate_can_internet, unless: :too_cool_for_school?

private def run_validations
  validate_required name, age
end

private def validate_can_internet
  validate_size_of age, min: 13
end

private def too_cool_for_school?
  [true, false].sample
end

Run the given block before saving or creating for SaveOperation

This runs before saving and before the database transaction is started. You can set defaults, validate, or perform any other setup necessary for saving.

Optionally you can pass an if or unless argument which allows you to run this conditionally. The symbol should reference a method you've defined that returns a truthy/falsey value

before_save(unless: :skip_callback?) do
  validate_required name, age
end

private def skip_callback?
  false
end