Ruby on Rails 2.1 Subdomain-Cookie issues

Question

When using a subdomain and trying to view anything related to current_user. user is sent to a new session page, the page shows the session is created and gives the option to logout. I can use no subdomain and it works fine.

Answer 1

Set it in your environment.rb (or environments/*.rb if you'll use different domains for each environment):

ActionController::CgiRequest::DEFAULT_SESSION_OPTIONS.update( :session_domain => '.domain.com')

Answer 2

FYI... as of Rails 2.3, this setting has changed. The rails 2.3+ version looks like:

ActionController::Base.session_options[:domain] = '.domain.com'

Just in case anyone else lands here from Google and gets confused like I did.