:expire_after rails 2.3.11 workaround

expires_fix_2311.rb

# workaround for https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/6634-railsrack-inconsistency-about-expires_afterexpires-cookie-option#ticket-6634-3
# expiration issue
# drop into RAILS_ROOT/config/initializers/expires_fix_2311.rb
#
require 'rack'

Rack::Utils.class_eval do
  class << self
    def set_cookie_with_expire!(header, key, value)
      if value[:expires].blank? && value[:expire_after]
        value[:expires] = Time.now + value[:expire_after]
      end
      set_cookie_without_expire!(header, key, value)
    end

    alias :set_cookie_without_expire! :set_cookie_header!
    alias :set_cookie_header! :set_cookie_with_expire!
  end
end

Super useful -- thank you!