How should I use after_create with a condition in the model

Question

I have a method that is called after the creation of an object

after_create :send_welcome_email

Is there a way to limit this to a condition, such as the value of an attribute of an object

after_create :send_welcome_email unless self.role == "Celebrant"

for example?

Answer 1

There are three ways to do this: Symbol, String, or Proc.

class User < ActiveRecord::Base

  after_create :send_welcome_email, unless: :is_celebrant?
  after_create :send_welcome_email, unless: "is_celebrant?"
  after_create :send_welcome_email, unless: Proc.new { self.role == "Celebrant" }

end

Documentation