model in subfolder, not missing constant error

Hi all,

I'm using the latest rails 2.3.5 and put some models in subfolders like this:

models/my/details/texts.rb
models/my/details/attributes.rb
...

The models themselves are defined like this:

class My::Details::Texts < ActiveRecord::Base
....

class My::Details::Attributes < ActiveRecord::Base
...

In development mode (using webrick), everything works fine. But in production mode (using thin), I get these errors:

A ArgumentError occurred in attributes#show:
  My::Details is not missing constant Attributes!
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:417:in `load_missing_constant'

A ArgumentError occurred in attributes#show:
  My::Details is not missing constant Texts!
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:417:in `load_missing_constant'

So I wonder if it's okay to place models in subfolders at all? If yes, why does this error occur and how to fix it? :slight_smile:

Thanks,
Corin

Historically, models in subfolders have caused problems, but they
should work now. Can you post a complete stack trace for either of
these errors?

--Matt Jones

Hi Matt,

here's the full backtrace:

  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
dependencies.rb:417:in `load_missing_constant'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
dependencies.rb:80:in `const_missing'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
dependencies.rb:98:in `send'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
dependencies.rb:98:in `const_missing'
  [RAILS_ROOT]/app/controllers/my/details/texts_controller.rb:28:in
`find_user'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
callbacks.rb:178:in `send'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
callbacks.rb:178:in `evaluate_method'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
callbacks.rb:166:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
filters.rb:225:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
filters.rb:629:in `run_before_filters'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
filters.rb:615:in `call_filters'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
filters.rb:610:in `perform_action_without_benchmark'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
core_ext/benchmark.rb:17:in `ms'
  /usr/lib/ruby/1.8/benchmark.rb:308:in `realtime'
  /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
core_ext/benchmark.rb:17:in `ms'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
rescue.rb:160:in `perform_action_without_flash'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
flash.rb:146:in `perform_action'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
base.rb:532:in `send'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
base.rb:532:in `process_without_filters'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
filters.rb:606:in `sass_old_process'
  /var/lib/gems/1.8/gems/haml-2.2.16/lib/sass/plugin/rails.rb:19:in
`process'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
base.rb:391:in `process'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
base.rb:386:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
routing/route_set.rb:437:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
dispatcher.rb:87:in `dispatch'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
dispatcher.rb:121:in `_call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
dispatcher.rb:130:in `build_middleware_stack'
  /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
query_cache.rb:29:in `call'
  /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
query_cache.rb:29:in `call'
  /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
connection_adapters/abstract/query_cache.rb:34:in `cache'
  /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
query_cache.rb:9:in `cache'
  /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
query_cache.rb:28:in `call'
  /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
connection_adapters/abstract/connection_pool.rb:361:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
string_coercion.rb:25:in `call'
  /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in `call'
  /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:24:in
`call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
params_parser.rb:15:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
session/abstract_store.rb:122:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
failsafe.rb:26:in `call'
  /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call'
  /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`synchronize'
  /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call'
  /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/
dispatcher.rb:106:in `call'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/rack/adapter/rails.rb:74:in
`call'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/connection.rb:76:in
`pre_process'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/connection.rb:74:in
`catch'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/connection.rb:74:in
`pre_process'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/connection.rb:57:in
`process'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/connection.rb:42:in
`receive_data'
  /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:
256:in `run_machine'
  /var/lib/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:
256:in `run'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/backends/base.rb:57:in
`start'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/server.rb:156:in `start'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/controllers/controller.rb:
80:in `start'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/runner.rb:177:in `send'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/runner.rb:177:in
`run_command'
  /var/lib/gems/1.8/gems/thin-1.2.5/lib/thin/runner.rb:143:in `run!'
  /var/lib/gems/1.8/gems/thin-1.2.5/bin/thin:6
  /usr/bin/thin:19:in `load'
  /usr/bin/thin:19

Corin

Same backtrace without line breaks (hopefully):