# File lib/devise/models/rememberable.rb, line 77
      def rememberable_value
        if respond_to?(:remember_token)
          remember_token
        elsif respond_to?(:authenticatable_salt) && (salt = authenticatable_salt)
          salt
        else
          raise "The #{self.class.name} class does not respond to remember_token and " <<
            "authenticatable_salt returns nil. In order to use rememberable, you must " <<
            "add a remember_token field to your model or ensure a password is always set."
        end
      end