Are objects stored in session updated automatically?

casper_the_ghost · January 31, 2008, 8:23pm

If I lookup a user, and store that object in my session

  @user = User.find(:id)
  session[:user] = @user

then the user record changes in the database in some way, then I try
and reaccess that object

  @user = session{:user]
  @first_name = @user.first_name

Is the field “first_name” the most updated or is it still the value
originally stored in the object?

Dave

casper_the_ghost · January 31, 2008, 8:39pm

Hi, if you update a session variable, you’re not updating the database
as
well. Thus, in your example, you’re simply modifying the object’s
field,
first_name, stored in session.

Good luck,

-Conrad

casper_the_ghost · January 31, 2008, 9:04pm

The object stored in the session is just a reference to the in-memory
User object, it will not
reflect changes to the database. Conventional RoR wisdom dictates
that you should not
store full objects in the session at all, but rather the id of the
object which can then be used to
lookup the object in the database as necessary.