ruby-on-rails - Create associated records in model after create

Question

I have a model, MyModel, which should, after it is created, created associated records of type MyAssociation. I need to run code like the below after a create on the MyModel:

myass = MyAssociation.new
myass.mymodel_id = self.id
myass.save

What is the best method to accomplish this?

Answer 1

Railsコールバックを使用したいと思うでしょう。この場合after_createは、元のオブジェクトが正常に作成された後に実行されます。このようなもの：

class MyModel

  after_create :create_associations

  def create_associations
    myass = MyAssociation.new
    myass.mymodel_id = self.id
    myass.save
  end
end