Re: [yast-devel] ActionController::Session::CookieStore::CookieOverflow

13 Jul 2009

      * Klaus Kaempf  [Jul 13. 2009 15:36]:
...
* Jiri Srain  [Jul 13. 2009 14:27]:
...
I hoped that I was not the first one who saw this issue :-/
Sorry, I should have kept the cookies :-(
Don't worry, I just got this error myself :-}
Got it !

Googling for 'cookieoverflow' led to uncommenting
  config.action_controller.session_store = :active_record_store
in config/environment.rb

Then
  rake db:sessions:create
and
  rake db:migrate

This moves the session store to the database and only stores a small
database ID in the session cookie.

Then
  sqlite3 db/development.sqlite3
  select data from sessions
then copy-and-paste to a tempfile

The tempfile is already approx. 8k large, clearly more than the 4k
cookie limit ;-}

Doing
  base64 -d <tempfile>
finally revealed the real problem:

ActionController::Flash::FlashHash contained a complete Exception
stack trace.

Lesson learned:

  DO NOT STORE EXCEPTION TRACES IN flash[]

;-)

Klaus

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