Getting error uninitialized constant NHLSDecorator if config.eager_load = false - ruby-on-rails-4

Question

I am new to Rails and working on Rails 4 application. In my development.rb I have
config.cache_classes = false
config.eager_load = false
Here is the directory structure of my application
Here is the snippet of my NHLSDecorator class
Here is the line from the _results_html.erb file that when run raise error
<% posting = Posting::Decorator.new(posting) %>
Now with this I am getting error that
I also have nhls/app/presenters directory in my autopath. I also added app/presenters/posting directory. Here is the snapshot of my application.rb file
# Custom directories with classes and modules you want to be autoloadable.
config.autoload_paths += %W(#{config.root}/extras)
config.autoload_paths += %W(#{config.root}/lib)
config.autoload_paths += Dir["#{config.root}/lib/**/"]
config.autoload_paths += Dir["#{config.root}/app/controllers/**/"]
config.autoload_paths += Dir["#{config.root}/app/reports/**/"]
config.autoload_paths += Dir["#{config.root}/app/searchers/**/"]
config.autoload_paths += Dir["#{config.root}/app/workers/**/"]
config.autoload_paths += %W(#{config.root}/app/models/ckeditor)
config.autoload_paths += %W(#{config.root}/app/presenters/posting)
But I am getting the error. If I change config.eager_load = true. Then it works fine. Why I am getting this error? What can be the cause?
Thanks

Answer 1

I solved it. Basically what I did I rename the file in app/presenters directory to nhls_decorator.rb. Instead of NHLS_Decorator. Also in the code I changed the lines
class Posting::Decorator < NhlsDecorator
note previously it was class Posting::Decorator < NHLSDecorator. And also in the file nhls_decorator.rb
class NhlsDecorator < SimpleDelegator
note previously it was class NHLSDecorator < SimpleDelegator.
So renaming did the trick. Actually with debug I found that for NHLSDecorator filename rails unable to find any path. But when I changed it to NhlsDecorator then rails find the path which is app/presenters/nhls_decorator.rb" and loads the file.
Thanks