Making Session Data Available to Models in Ruby on Rails | Zorched / One-Line Fix

Thread localでmodelでsessionを使う Making Session Data Available to Models in Ruby on Rails | Zorched / One-Line Fix

How do you get the current_user value? Well, you have to plan ahead a little bit. The User in this application is stored in the HTTP Session when the user is authenticated. The session isn’t directly available to the Model level (including the Observers) so you have to figure out a way around this. One way to accomplish this is by using a named Thread local variable . Using Mongrel as a web server, each HTTP request is served by its own thread. That means that a variable stored as thread local will be available for the entire processing of a request.

Full article: http://www.zorched.net/2007/05/29/making-session-data-ava...