I'm new to Ruby and Rails, so please forgive me if this is a n00b question. I'm trying to upgrade a very old app (using Ruby 2.3.4 and Rails 5.0.6) to the latest versions of Ruby (3.1.3) and Rails (7.0.4). When config/environment/devlopment.rb executes, I get an uninitialized constant error. It's trying to access a constant that's defined in a file /lib/settings.rb. If I try to use this constant in a controller, I have no problems. However, trying to use this constant in my development.rb causes the error.
I've already added these lines to my application.rb, but it hasn't helped:
config.autoload_paths << "#{Rails.root}/lib"
config.eager_load_paths << "#{Rails.root}/lib"
From my research, this seems to be a problem with autoloading, and that the new Rails uses something called Zeitwerk which does loading a bit differently. However, I'm not sure how to make this work. Is there a way to get this constant to load before development.rb executes?
Files in lib are not supposed to be autoloaded. Please don't add those configuration lines, instead, issue a
require 'settings'
in config/environments/development.rb.