trashable.rb

module Trashable
  extend ActiveSupport::Concern

  included do
    default_scope { where(deleted_at: nil) }
  end

  module ClassMethods
    def trashed
      unscope(where: :deleted_at).where.not(deleted_at: nil)
    end

    def with_trashed
      unscope(where: :deleted_at)
    end
  end

  def trashed?
    deleted_at.present?
  end

  def trash!
    update(deleted_at: Time.now)
  end

  def restore!
    update(deleted_at: nil)
  end
end