Forum: Ruby on Rails Intermittent error - undefined method 'destroy_without_callb

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C004d67820a114e24ccf6f2ddaf5b236?d=identicon&s=25 Richard Livsey (Guest)
on 2006-03-29 20:18
(Received via mailing list)
When testing my app locally I'm getting intermittent errors which are
driving me mad!

The error is:

NameError ((eval):1:in `alias_method': undefined method
`destroy_without_callbacks' for class `Exercise'):

Refreshing the browser sometimes fixes it, as does restarting WEBrick.
Annoying to debug as it only happens intermittently.

Any ideas on why this is happening, or indeed how to track it down?


Full traceback is as follows:

NameError ((eval):1:in `alias_method': undefined method
`destroy_without_callbacks' for class `Exercise'):
     /vendor/rails/activerecord/lib/active_record/associations.rb:787:in
`class_eval'
     (eval):1:in `class_eval'
     /vendor/rails/activerecord/lib/active_record/associations.rb:787:in
`class_eval'
     /vendor/rails/activerecord/lib/active_record/associations.rb:787:in
`has_and_belongs_to_many'
     /app/models/exercise.rb:33

/vendor/rails/activesupport/lib/active_support/dependencies.rb:129:in
`load'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:129:in
`load'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:56:in
`rails_pre_engines_require_or_load'

/vendor/plugins/engines/lib/engines/dependencies_extensions.rb:52:in
`rails_1_1_require_or_load'

/vendor/plugins/engines/lib/engines/dependencies_extensions.rb:21:in
`rails_edge_require_or_load'

/vendor/plugins/engines/lib/engines/dependencies_extensions.rb:10:in
`require_or_load'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:30:in
`depend_on'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:36:in
`associate_with'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:75:in
`require_association'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:75:in
`require_association'
     /vendor/rails/activerecord/lib/active_record/associations.rb:894:in
`require_association_class'
     /vendor/rails/activerecord/lib/active_record/base.rb:981:in
`instantiate_without_callbacks'
     /vendor/rails/activerecord/lib/active_record/callbacks.rb:215:in
`instantiate'
     /vendor/rails/activerecord/lib/active_record/base.rb:390:in
`find_by_sql'
     /vendor/rails/activerecord/lib/active_record/base.rb:390:in
`collect!'
     /vendor/rails/activerecord/lib/active_record/base.rb:390:in
`find_by_sql'
     /vendor/rails/activerecord/lib/active_record/base.rb:924:in
`find_every'
     /vendor/rails/activerecord/lib/active_record/base.rb:918:in
`find_initial'
     /vendor/rails/activerecord/lib/active_record/base.rb:952:in
`find_one'
     /vendor/rails/activerecord/lib/active_record/base.rb:941:in
`find_from_ids'
     /vendor/rails/activerecord/lib/active_record/base.rb:382:in `find'
     /lib/item_aids.rb:6:in `get_item'
     /app/controllers/items_controller.rb:277:in `version'
     /vendor/rails/actionpack/lib/action_controller/base.rb:908:in
`send'
     /vendor/rails/actionpack/lib/action_controller/base.rb:908:in
`perform_action_without_filters'
     /vendor/rails/actionpack/lib/action_controller/filters.rb:355:in
`perform_action_without_benchmark'

/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue'

/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:69:in
`measure'

/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue'
     /vendor/rails/actionpack/lib/action_controller/rescue.rb:82:in
`perform_action'
     /vendor/rails/actionpack/lib/action_controller/base.rb:379:in
`send'
     /vendor/rails/actionpack/lib/action_controller/base.rb:379:in
`process_without_filters'
     /vendor/rails/actionpack/lib/action_controller/filters.rb:364:in
`process_without_session_management_support'

/vendor/rails/actionpack/lib/action_controller/session_management.rb:117:in
`process'
     /vendor/rails/railties/lib/dispatcher.rb:38:in `dispatch'
     /vendor/rails/railties/lib/webrick_server.rb:115:in
`handle_dispatch'
     /vendor/rails/railties/lib/webrick_server.rb:81:in `service'
     D:/programming/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in
`service'
     D:/programming/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:155:in
`start_thread'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:144:in
`start_thread'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:94:in `start'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start'
     D:/programming/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start'
     /vendor/rails/railties/lib/webrick_server.rb:67:in `dispatch'
     /vendor/rails/railties/lib/commands/servers/webrick.rb:59

D:/programming/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
`require__'

D:/programming/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
`require'

/vendor/rails/activesupport/lib/active_support/dependencies.rb:136:in
`require'
     /vendor/rails/railties/lib/commands/server.rb:30

D:/programming/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
`require__'

D:/programming/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:18:in
`require'
     script/server:7
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