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Added documentation on models in sessions #929 [c.r.mcgrath@gmail.com]

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git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1000 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
This commit is contained in:
David Heinemeier Hansson
2005-03-26 13:35:22 +00:00
parent a5b55c6b9f
commit cef57e0cc2
1 changed files with 7 additions and 0 deletions
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7
actionpack/lib/action_controller/base.rb
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@@ -105,6 +105,13 @@ module ActionController #: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.