My application, a very simple general ledger, that worked very well until
June 26 does not work any longer. It is used under Ubuntu 12.04 and I
believe there was a Ruby update after that.

What happens?

When I try to start the appIication I get the following output in my web
browser:

ActionDispatch::Session::SessionRestoreError

Session contains objects whose class definition isn't available.
Remember to require the classes for all objects kept in the session.
(Original exception: uninitialized constant ActionController::Flash::FlashHash [NameError])

The environment is
Rails 3.2.1
=> Booting WEBrick
=> Rails 3.2.1 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
[2012-07-23 22:24:03] INFO WEBrick 1.3.1
[2012-07-23 22:24:03] INFO ruby 1.9.3 (2011-10-30) [i686-linux]
and the console contains
Started GET "/" for 127.0.0.1 at 2012-07-23 22:24:07 +0200

ActionDispatch::Session::SessionRestoreError (Session contains objects whose class definition isn't available.
Remember to require the classes for all objects kept in the session.
(Original exception: uninitialized constant ActionController::Flash::FlashHash [NameError])
):
actionpack (3.2.1) lib/action_dispatch/middleware/session/abstract_store.rb:62:in `rescue in rescue in stale_session_check!'
actionpack (3.2.1) lib/action_dispatch/middleware/session/abstract_store.rb:58:in `rescue in stale_session_check!'
actionpack (3.2.1) lib/action_dispatch/middleware/session/abstract_store.rb:55:in `stale_session_check!'
actionpack (3.2.1) lib/action_dispatch/middleware/session/cookie_store.rb:51:in `unpacked_cookie_data'
rack (1.4.1) lib/rack/session/cookie.rb:98:in `extract_session_id'
actionpack (3.2.1) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `block in extract_session_id'
actionpack (3.2.1) lib/action_dispatch/middleware/session/abstract_store.rb:55:in `stale_session_check!'
actionpack (3.2.1) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `extract_session_id'
rack (1.4.1) lib/rack/session/abstract/id.rb:43:in `load_session_id!'
rack (1.4.1) lib/rack/session/abstract/id.rb:32:in `[]'
rack (1.4.1) lib/rack/session/abstract/id.rb:262:in `current_session_id'
rack (1.4.1) lib/rack/session/abstract/id.rb:268:in `session_exists?'
rack (1.4.1) lib/rack/session/abstract/id.rb:107:in `exists?'
rack (1.4.1) lib/rack/session/abstract/id.rb:122:in `load_for_read!'
rack (1.4.1) lib/rack/session/abstract/id.rb:64:in `has_key?'
actionpack (3.2.1) lib/action_dispatch/middleware/flash.rb:258:in `ensure in call'
actionpack (3.2.1) lib/action_dispatch/middleware/flash.rb:259:in `call'
rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/cookies.rb:338:in `call'
activerecord (3.2.1) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:443:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `_run__967158296__call__1011983202__callbacks'
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.1) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.1) lib/rails/rack/logger.rb:26:in `call_app'
railties (3.2.1) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.1) lib/rack/lock.rb:15:in `call'
actionpack (3.2.1) lib/action_dispatch/middleware/static.rb:53:in `call'
railties (3.2.1) lib/rails/engine.rb:479:in `call'
railties (3.2.1) lib/rails/application.rb:220:in `call'
rack (1.4.1) lib/rack/content_length.rb:14:in `call'
railties (3.2.1) lib/rails/rack/log_tailer.rb:14:in `call'
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
/home/tpollak/.rbenv/versions/1.9.3-p0/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/tpollak/.rbenv/versions/1.9.3-p0/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/tpollak/.rbenv/versions/1.9.3-p0/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'


Rendered /home/tpollak/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.5ms)
Rendered /home/tpollak/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.6ms)
Rendered /home/tpollak/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/actionpack-3.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (5.4ms)
I have installed RubyGems 1.8.24 and use rbenv to control versions.

How do I avoid the crash?



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  • Colin Law at Jul 25, 2012 at 7:19 am

    On 23 July 2012 21:43, Tommy Pollák wrote:
    My application, a very simple general ledger, that worked very well until
    June 26 does not work any longer. It is used under Ubuntu 12.04 and I
    believe there was a Ruby update after that.

    What happens?

    When I try to start the appIication I get the following output in my web
    browser:

    ActionDispatch::Session::SessionRestoreError

    Session contains objects whose class definition isn't available.
    Remember to require the classes for all objects kept in the session.
    (Original exception: uninitialized constant
    ActionController::Flash::FlashHash [NameError])
    Have you tried clearing the cookies in your browser? Or try it with a
    different browser or from a different machine.

    Colin

    --
    You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
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  • Tommy Pollák at Jul 25, 2012 at 6:31 pm
    Thanks! Works perfectly!

    Den onsdagen den 25:e juli 2012 kl. 09:19:02 UTC+2 skrev Colin Law:
    On 23 July 2012 21:43, Tommy Pollák wrote:
    My application, a very simple general ledger, that worked very well until
    June 26 does not work any longer. It is used under Ubuntu 12.04 and I
    believe there was a Ruby update after that.

    What happens?

    When I try to start the appIication I get the following output in my web
    browser:

    ActionDispatch::Session::SessionRestoreError

    Session contains objects whose class definition isn't available.
    Remember to require the classes for all objects kept in the session.
    (Original exception: uninitialized constant
    ActionController::Flash::FlashHash [NameError])
    Have you tried clearing the cookies in your browser? Or try it with a
    different browser or from a different machine.

    Colin
    --
    You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
    To post to this group, send email to rubyonrails-talk@googlegroups.com.
    To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
    To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/NEh7q_TggoMJ.
    For more options, visit https://groups.google.com/groups/opt_out.
  • Frederick Cheung at Jul 25, 2012 at 4:36 pm
    On Monday, July 23, 2012 9:43:49 PM UTC+1, Tommy Pollák wrote:


    The clue is this


    ActionDispatch::Session::SessionRestoreError
    Session contains objects whose class definition isn't available. Remember
    to require the classes for all objects kept in the session.
    (Original exception: uninitialized constant
    ActionController::Flash::FlashHash [NameError])


    The session contains serialised ruby objects and in this instance contains
    an object that rails couldn't deserialize. If my memory is correct,
    ActionController::Flash::FlashHash was the name of the class that held the
    session values in older versions of rails - it looks like you might have
    accidentally upgraded rails. Clearing out sessions should fix this,
    although the upgrade might of course cause problems elsewhere.

    Fred

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  • Tommy Pollák at Jul 25, 2012 at 4:04 pm
    Thanks!
    Seems your description is relevant, see answer to previous advice.

    Den onsdagen den 25:e juli 2012 kl. 11:22:14 UTC+2 skrev Frederick Cheung:

    On Monday, July 23, 2012 9:43:49 PM UTC+1, Tommy Pollák wrote:


    The clue is this


    ActionDispatch::Session::SessionRestoreError
    Session contains objects whose class definition isn't available. Remember
    to require the classes for all objects kept in the session.
    (Original exception: uninitialized constant
    ActionController::Flash::FlashHash [NameError])


    The session contains serialised ruby objects and in this instance contains
    an object that rails couldn't deserialize. If my memory is correct,
    ActionController::Flash::FlashHash was the name of the class that held the
    session values in older versions of rails - it looks like you might have
    accidentally upgraded rails. Clearing out sessions should fix this,
    although the upgrade might of course cause problems elsewhere.

    Fred
    --
    You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
    To post to this group, send email to rubyonrails-talk@googlegroups.com.
    To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com.
    To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/UTRDa5rNlsoJ.
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postedJul 24, '12 at 1:01p
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