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Added documentation on models in sessions #929 []

git-svn-id: 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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dhh committed Mar 26, 2005
1 parent a5b55c6 commit cef57e0cc244062663ad5fc5652072a12f06aaf2
Showing with 7 additions and 0 deletions.
  1. +7 −0 actionpack/lib/action_controller/base.rb
@@ -105,6 +105,13 @@ class MissingFile < ActionControllerError #:nodoc:
# Any object can be placed in the session (as long as it can be Marshalled). But remember that 1000 active sessions each storing a
# 50kb object could lead to a 50MB memory overhead. In other words, think carefully about size and caching before resorting to the use
# of the session.
+ #
+ # If you store a model in the session, you must also include a line like:
+ #
+ # model :person
+ #
+ # For that particular controller. In Rails, you can also just add it in your app/controller/application.rb file (so the model is available
+ # for all controllers). This lets Action Pack know to have the model definition loaded before retrieving the object from the session.
# For removing objects from the session, you can either assign a single key to nil, like <tt>@session[:person] = nil</tt>, or you can
# remove the entire session with reset_session.

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