archived_mixin.rb

module ArchivedMixin
  extend ActiveSupport::Concern

  included do
    scope :archived, -> { where.not(:deleted_on => nil) }
    scope :active, -> { where(:deleted_on => nil) }

    belongs_to :old_ext_management_system, :foreign_key => :old_ems_id, :class_name => 'ExtManagementSystem'
  end

  def archived?
    !active?
  end
  alias_method :archived, :archived?

  def active?
    deleted_on.nil?
  end
  alias_method :active, :active?

  def archive!
    update_attributes!(:deleted_on => Time.now.utc)
  end

  def unarchive!
    update_attributes!(:deleted_on => nil)
  end

  # Needed for metrics
  def my_zone
    if ext_management_system.present?
      ext_management_system.my_zone
    elsif old_ext_management_system.present?
      # Archived container entities need to retain their zone for metric collection
      # This makes the association more complex and might need a performance fix
      old_ext_management_system.my_zone
    end
  end
end