There has been some discussion on this, but I want to revive it a bit. I''m going to have multiple Rails apps, each with their own subdomain in a tld: foo.mydomain.com bar.mydomain.com I want to have a single login work across applications. A given user can have data in each application, but the data will be distinct. That is, I don''t see a lot of shared code between applications other than login. There seem to be 2 choices: a) Separate app for login, then have an app-per-subdomain redirect there and back or b) Multiple applications using the same database. Separate app for login -------------------------------- This has been suggested quite a bit. But it raises some questions: 1) How do I join users and data in each app? That is be able to join my users with foo_model_1 in foo and with bar_model_1 in bar? 2) Do I sync the user table out of the login app and into each other application? Anyone have pointers to MySQL-fu to do this? Like many, Rails is my first foray into db-land. Single database, multiple apps -------------------------------------------- This has been suggested a few times. Just keep one database for all apps that need to share the same user data. Each app has its own tables. My questions here: 3) How well will migrations work in this situation? Am I going to have to tip-toe to prevent a migration dependency order? 4) What about sessions? Which app should "own" the sessions migration? Do I have to do anything special so foo and bar use the same session data (other than the right lines in application.rb)? 5) Do I want each app to have their own cookie? I''m a little confused about this one, though there is a little bit about it here (http://technoweenie.stikipad.com/plugins/show/Using+with+Multiple+Sites), but I don''t get about how to manage the cookies across subdomains to have just one session. I''m leaning to the single database path. Thoughts/comments/answers/rants? (Note that I''m trying to be authentication-method-agnostic-here, so maybe there will be fewer rants?) thx, --dwf --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---