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?