use "Rack::Lock", :if => lambda { !ActionController::Base.allow_concurrency } use "ActionController::Failsafe" ["ActionController::Session::CookieStore", "ActionController::Session::MemCacheStore", "ActiveRecord::SessionStore"].each do |store| use(store, ActionController::Base.session_options, :if => lambda { if session_store = ActionController::Base.session_store session_store.name == store end } ) end use "ActionController::RewindableInput" use "ActionController::ParamsParser" use "Rack::MethodOverride"