BerryUnitConverter has been released. Featuring conversions for pennyweight, micrometers and millimeter (can’t believe I’d forgotten that one). Get it at the usual place.
OK, so I happily hack away on my Rails application on a Debian box with Ruby 1.8.7 and Rails 2.1.0, and then deploy to a Fedora 8 server with Ruby 1.8.6 and Rails 2.2.2. All of a sudden a particular release causes Passenger to spit an error page on application startup. The key error was:
undefined method \`empty?’ for nil:NilClass
Now I’m combing all over my code to find where I’m using “empty?” but I’m sure it’s somewhere that gets run on application startup, otherwise it wouldn’t show up when Passenger tries to start the application. But I find nothing and I’m about to shoot myself.
Following the trace I end up hacking Ruby’s erb.rb file, as there appear to be some bugs in this; indeed, this one from 1.8.6 is different from what I have in 1.8.7, so the app runs fine here. I try to fix instances where empty? might get called on a nil object, but after fixing 3 of these the app stops responding altogether. Hmm, so something, somewhere, depends on erb.rb’s buggy behavior. Best to leave it alone.
HOWEVER, on the deployment server, running with script/server works fine; it’s only when using Passenger that things blow up.
Finally I find this thread that points me in the right direction:
One of the users dropped some
JPEG files into the /app/views/static directory, and that seems to be
jamming up the works with 2.2.2.
Indeed, as part of my last set of revisions, I’d left several samples of static content I was converting into dynamically generated pages; sure enough, they included JPGs and whatnot. Just to be safe, I decided to move the entire directory into public to avoid any problems.
Now the app runs just peachy and I only wasted 2 hours chasing down this bug. Thanks to the guys at Nabble!
Eventually it all boils down to this Rails bug reported at Lighthouse. So hopefully it’ll be fixed soon. In the meanwhile, keep binary files out of your views subtree.
I’m attaching the entire Passenger error page, in case it’s useful to anyone. Mainly so that Google can find it faster for other people with this problem.
Further information about the error may have been written to the application’s log file. Please check it in order to analyse the problem.
| # | File | Line | Location |
|---|---|---|---|
| /usr/lib/ruby/1.8/erb.rb | 478 | in `scan’ | |
| 1 | /usr/lib/ruby/1.8/erb.rb | 524 | in `compile’ |
| 2 | /usr/lib/ruby/1.8/erb.rb | 691 | in `initialize’ |
| 3 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/template_handlers/erb.rb | 51 | in `new’ |
| 4 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/template_handlers/erb.rb | 51 | in `compile’ |
| 5 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/template_handler.rb | 11 | in `call’ |
| 6 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/renderable.rb | 21 | in `_unmemoized_compiled_source’ |
| 7 | /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/memoizable.rb | 57 | in `compiled_source’ |
| 8 | /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/memoizable.rb | 25 | in `__send__’ |
| 9 | /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/memoizable.rb | 25 | in `memoize_all’ |
| 10 | /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/memoizable.rb | 22 | in `each’ |
| 11 | /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/memoizable.rb | 22 | in `memoize_all’ |
| 12 | /usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/memoizable.rb | 17 | in `freeze’ |
| 13 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 88 | in `reload!’ |
| 14 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 102 | in `templates_in_path’ |
| 15 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 100 | in `each’ |
| 16 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 100 | in `templates_in_path’ |
| 17 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 86 | in `reload!’ |
| 18 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 78 | in `load’ |
| 19 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 109 | in `load’ |
| 20 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 109 | in `each’ |
| 21 | /usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_view/paths.rb | 109 | in `load’ |
| 22 | /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb | 357 | in `load_view_paths’ |
| 23 | /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb | 182 | in `process’ |
| 24 | /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb | 112 | in `send’ |
| 25 | /usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb | 112 | in `run’ |
| 26 | ./config/environment.rb | 13 | |
| 27 | /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb | 31 | in `gem_original_require’ |
| 28 | /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb | 31 | in `require’ |
| 29 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/railz/application_spawner.rb | 254 | in `preload_application’ |
| 30 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/railz/application_spawner.rb | 214 | in `initialize_server’ |
| 31 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/utils.rb | 179 | in `report_app_init_status’ |
| 32 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/railz/application_spawner.rb | 203 | in `initialize_server’ |
| 33 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 166 | in `start_synchronously’ |
| 34 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 135 | in `start’ |
| 35 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 112 | in `fork’ |
| 36 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 112 | in `start’ |
| 37 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/railz/application_spawner.rb | 179 | in `start’ |
| 38 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/spawn_manager.rb | 222 | in `spawn_rails_application’ |
| 39 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/spawn_manager.rb | 217 | in `synchronize’ |
| 40 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/spawn_manager.rb | 217 | in `spawn_rails_application’ |
| 41 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/spawn_manager.rb | 126 | in `spawn_application’ |
| 42 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/spawn_manager.rb | 251 | in `handle_spawn_application’ |
| 43 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 317 | in `__send__’ |
| 44 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 317 | in `main_loop’ |
| 45 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/lib/passenger/abstract_server.rb | 168 | in `start_synchronously’ |
| 46 | /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/bin/passenger-spawn-server | 46 |
A new version of BerryUnitConverter is up. This one adds data units as well as Blackberry Storm compatibility. Let me know of any problems. Get it at the usual place.