rails 3 using folder name as namspace throws uninitialized constant error

Question

I'm trying to upgrade an app from rails 2.3 to 3.0 and it has a file

app/utility/interface/import/import_statistics_manager.rb

which contains

class Utility::Interface::Import::ImportStatisticsManager         
//code here  
end

I beleive Utility::Interface::Import are the folder names in its file path but used as namespaces

This code works fine in rails 2.3 but when I try to run with rails 3.0.6 it throws a NameError

Error message:
   uninitialized constant Utility
Exception class:
   NameError

FYI: rails 2.3 uses ruby 1.8.7 and rails 3.0.6 uses ruby 1.9.2

Please correct me if my understandings are not correct

Have you added the directories to your autoload path in application.rb? — dhoelzgen, Apr 25 '13 at 07:05
I would try to add the one you mentioned in your post, too - Not all directories in the app folder are autoloaded automatically. — dhoelzgen, Apr 25 '13 at 07:20
@dhoelzgen yes it has "config.autoload_paths += %W(#{config.root}/app/utility)" — Siva, Apr 25 '13 at 07:22
Ok, then try to nest the modules explicitly, as shown in [this post](http://stackoverflow.com/questions/14348891/rails-3-trouble-with-namespaces-custom-classes-uninitialized-constant). If this doesn't help, please provide some more info on where the error occurs. — dhoelzgen, Apr 25 '13 at 07:28
@dhoelzgen thanx man!! that post helped adding "app" folder to autoload instead of "app//utility/interface/import" fixed it. — Siva, Apr 25 '13 at 07:43

score 1 · Accepted Answer · edited May 23 '17 at 12:04

1

For future reference (see comments on the question):

It helped adding the complete app folder to the autoload paths.

See this post for further info.

edited May 23 '17 at 12:04

Community

answered Apr 25 '13 at 08:00

dhoelzgen

1 Answers1