require 'devise/strategies/authenticatable' module Devise module Strategies # Remember the user through the remember token. This strategy is responsible # to verify whether there is a cookie with the remember token, and to # recreate the user from this cookie if it exists. Must be called *before* # authenticatable. class Rememberable < Authenticatable # A valid strategy for rememberable needs a remember token in the cookies. def valid? @remember_cookie = nil remember_cookie.present? end # To authenticate a user we deserialize the cookie and attempt finding # the record in the database. If the attempt fails, we pass to another # strategy handle the authentication. def authenticate! resource = mapping.to.serialize_from_cookie(*remember_cookie) if validate(resource) success!(resource) elsif !halted? cookies.delete(remember_key) pass end end private def decorate(resource) super resource.extend_remember_period = mapping.to.extend_remember_period if resource.respond_to?(:extend_remember_period=) end def remember_me? true end def remember_key "remember_#{scope}_token" end def remember_cookie @remember_cookie ||= cookies.signed[remember_key] end end end end Warden::Strategies.add(:rememberable, Devise::Strategies::Rememberable)