Ruby on Rail - Add background task to update status and expiration date

I am making a auction web app. When a ad is created, I automatically add expiration date into database.

  before_create :set_expiration_date

  def set_expiration_date
    self.expiration_date =  Time.now + 60.days
  end

How can I add a background task/job, so when a ad has reached its expiration date, it can change the status to false.

Is it any good gem that I could use in my case?

I have tried whenever gem and it was very cumbersome and it didn't ran in background and hard to understand.

Solution

Just create background job changing the status in after create callback which would be performed at exp. date