[From the issue I opened about it: https://github.com/rails/rails/issues/28152]
I don't know if this is more a bug report or a feature request, or even an SO question [image: :flushed:] anyway: I have a model Activity which has a lot of sti types, so a lot of related class files. I would like to organize them into app/models/activities, in order to separate them from the other models. I can actually accomplish it using config.eager_load_paths += %W(#{config.root}/app/models/activities) directive, but then in development mode the following exception is raised: ArgumentError: A copy of SubFolderModel has been removed from the module tree but is still active! I guess the reason is that app/models/subfolder conflicts with app/models autoload. Anyway, is there a way to organize models using different directories? Steps to reproduce - Create an app/models subfolder - Put some models inside - Add config.eager_load_paths += %W(#{config.root}/app/models/subfolder) to config/application.rb - Start the application in development mode Expected behavior Everything works fine Actual behavior Sometimes the following exception is raised: ArgumentError: A copy of SubFolderModel has been removed from the module tree but is still active! System configuration *Rails version*: 5.0.1 *Ruby version*: 2.4.0 -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-core+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-core@googlegroups.com. Visit this group at https://groups.google.com/group/rubyonrails-core. For more options, visit https://groups.google.com/d/optout.