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ruby-on-railsautoloadruby-on-rails-5

Load lib files in production

I've upgraded one of my apps from Rails 4.2.6 to Rails 5.0.0. The Upgrade Guide says, that the Autoload feature is now disabled in production by default.

Now I always get an error on my production server since I load all lib files with autoload in the application.rb file.

module MyApp
    class Application < Rails::Application
        config.autoload_paths += %W( lib/ )
    end
end

For now, I've set the config.enable_dependency_loading to true but I wonder if there is a better solution to this. There must be a reason that Autoloading is disabled in production by default.

Solution

  • Autoloading is disabled in the production environment because of thread safety. Thank you to @Зелёный for the link.

    I solved this problem by storing the lib files in a lib folder in my app directory as recommended on Github. Every folder in the app folder gets loaded by Rails automatically.