lib/doorkeeper/models/concerns/ownership.rb
module Doorkeeper module Models module Ownership extend ActiveSupport::Concern included do belongs_to_options = { polymorphic: true } if defined?(ActiveRecord::Base) && ActiveRecord::VERSION::MAJOR >= 5 belongs_to_options[:optional] = true end belongs_to :owner, belongs_to_options validates :owner, presence: true, if: :validate_owner? end def validate_owner? Doorkeeper.configuration.confirm_application_owner? end end end end