自定义 ActiveModelCallback

questionnaire.rb

class Questionnaire < ActiveRecord::Base
  include Restorable

  set_callback :remove, :after, :after_remove

  private
  
  def after_remove
    self.stop
  end
end

restorable.rb

module Restorable
  include ActiveSupport::Callbacks
  extend ActiveSupport::Concern

  included do
    define_callbacks :remove
    define_callbacks :restore

    default_scope -> { where(deleted_at: nil) }
    scope :removed, -> { unscoped.where.not(deleted_at: nil) }
  end

  def remove
    self.class.transaction do
      run_callbacks :remove do
        self.update_attributes(deleted_at: Time.now)
      end
    end
  end

  def restore
    self.class.transaction do
      run_callbacks :restore do
        self.update_attributes(deleted_at: nil)
      end
    end
  end
end