How to clear/reset a corrupt session (rails 2.3)


We have a rails 2.3 app with a large number of live users, and we have
recently done something to corrupt some users sessions in such a way
that any attempt to use the session object itself raises an exception.
“reset_session” is also raising the same exception, and not clearing the

Is there a lower-level way to clear the session from the app that
doesn’t require the session to be valid? We are using the cookie

What is really surprsing to me is that even
“cookies[‘our_cookie_label’]=nil” raises the exception.

The exception is this: “ActionController::SessionRestoreError (Session
contains objects whose class definition isn’t available. Remember to
require the classes for all objects kept in the session.
(Original exception: #{const_error.message} [#{const_error.class}])”

Unfortunately, since we can’t read the session at all, I can’t figure
out what object is in it that isn’t defined.


On May 22, 2014, at 11:24 AM, Avram D. wrote:

out what object is in it that isn’t defined.


Have you tried changing the secret, so all existing cookies are
invalidated? Look in the initializers for secret_token.rb (may be
somewhere else on 2.3, can’t recall exactly).


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