我应该如何在模型中使用带有条件的after_create

Question

我有一个在创建对象后调用的方法

after_create :send_welcome_email

有没有办法将此限制为条件,例如对象属性的值

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

例如？

Answer 1

有三种方法:Symbol,String或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

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