Heroku ActionController::RoutingError (uninitialized constant error) - ruby-on-rails

Question

Rails 4.2.4, Ruby 2.1.7
I have a module inside lib/ directory.
lib/BLL/user_feed.rb
module BLL
class UserFeed
def initialize
logger.debug "Class has been initialized"
end
def get_user_feed(user_id)
# logic here
return {
# object
}
end
end
end
When I try to include that in my controller to use my user_Feed logic,
class UserfeedController < ApplicationController
include BLL
before_action :authenticate_user!
def show
# some logic
end
end
In my config/application.rb
config.autoload_paths << Rails.root.join('lib')
This runs fine locally, however, it breaks when I deploy it on Heroku.
it's throwing
ActionController::RoutingError (uninitialized constant UserfeedController::BLL):
error.
2015-10-20T13:45:13.791457+00:00 app[web.1]: /app/app/controllers/api/v1/userfeed_controller.rb:1:in `<top (required)>': uninitialized constant Bll (NameError)
2015-10-20T13:45:13.791457+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.2.4/lib/rails/engine.rb:472:in `block (2 levels) in eager_load!'
2015-10-20T13:45:13.791458+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.2.4/lib/rails/engine.rb:471:in `each'
2015-10-20T13:45:13.791459+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.2.4/lib/rails/engine.rb:471:in `block in eager_load!'
2015-10-20T13:45:13.791460+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.2.4/lib/rails/engine.rb:469:in `each'
2015-10-20T13:45:13.791462+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.2.4/lib/rails/engine.rb:469:in `eager_load!'
2015-10-20T13:45:13.791463+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.1.0/gems/railties-4.2.4/lib/rails/engine.rb:346:in `eager_load!'
Any suggestions?

Answer 1

I think you're missing a module BLL; end in lib/bll.rb
But also, play with naming the module Bll, but I don't think that's it

Answer 2

try
config.autoload_paths += %W(#{config.root}/lib/BLL)
and dont forget to restart the server
Edit1
Moreover; changing the name of Dir BLL to bll also works

Answer 3

Ruby defaults to CamelCase, you'll have to use the following:
#vendor/bll/user_feed.rb
module Bll
class UserFeed
...
end
end
As a second, the vendor dir is autoloaded (to the best of my knowledge), so the above code should work to fix the UnrecognizedConstant error.
https://softwareengineering.stackexchange.com/questions/123305/what-is-the-difference-between-the-lib-and-vendor-folders

Answer 4

Rails in fact loads your app directory when the app loads. So actually no need to mention your app/bll in autoload paths.
However, what I am doing wrong here in this case is adding module on top of the class.
So, my app is looking for app/bll/bll/Whatever
module Bll - there is not need for this module to be declared
class Whatever
# some logic.
end
end
All you need to do is.
class Whatever
end
After this, your class is available to use.