Using memcached session store with Warden?

[josegrad]

Hi,

I'm trying to quit cookies and instead using memcached (via the dalli gem)
I can't find the way to tell Warden to use dally_store.

I imagine that is needed right?

Thanks.

[josevalim]

No, you don't need to tell anything. It uses the rack api which is properly handled by rails.

[josegrad]

Thanks Jose, you are everywhere :-)

I'm doing something wrong for sure.
The only thing I'm doing to take dally into use is:

gem 'dalli'

and this in the initilializers/session_store.rb

require 'action_dispatch/middleware/session/dalli_store'
Rails.application.config.session_store :dalli_store, :memcache_server => ['localhost'], :namespace => 'sessions', :key => '_my_app_session', :expire_after => 30

I can see memcached receiving requests when I use the app: SET sessions:8487995b7d96c428573595d2ecd384ad Value len is 74

Using debugger I can also see that Warden gets to know the right user.
However going forward (I sign_in the current user and then redirect him somewhere in the app) I can see:

...
...
/Users/elmaco/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.0.5/lib/action_dispatch/middleware/session/abstract_store.rb:163
cookie = { :value => value }
...
...

So cookies are still used by the app. I'm missing something important here...

Regards.

[josevalim]

Sessions always use cookies. Always. The question is if they use the cookie as a pointer (for example, it points to a database entry) or as the entity to store the data. I think there is a Rails guide that explains it well.

[josegrad]

Ha. "Sessions always use cookies. Always." should be added to the section of the rails guide that covers that. It is mentioned there but it went over my head before.

So if there is no cookie there is pointer to the session data. From the other Devise thread (heartcombo/devise#1401) you know this came from the iFrames used by Facebook apps where the third party cookies are not always easy to set.

Based on this info this won't help fixing my problem.
I must think of something else...

Any suggestions would be helpful.

Thanks for the comments Jose.