覆盖来自另一个引擎的模型的 Rails 引擎未通过 zeitwerk 检查

Question

I am creating two engines. Engine Two builds on Engine One . I am using both of these Engines in an application I'm building. I used the class_eval Engine overriding technique mentioned in the rails guide.

# app/models/active_stix/tool_override.rb
ActiveStix::Tool.class_eval do
# Model override code here
end

The override is required from lib/engine_name/engine.rb as follows

    initializer "active_attack.update_stix" do |app|
      engine_root = File.expand_path("../../..", __FILE__)
      Dir.glob(engine_root + "/app/overrides/**/*_override*.rb").each do |c|
        require_dependency(c)
      end
    end

Everything works as expected in development, but when I run rails zeitwerk:check or try to deploy the application to Heroku, I get the following error

expected file ~/.rvm/gems/ruby-2.7.0/gems/active_attack-0.1.14/app/overrides/models/active_stix/tool_override.rb to define constant Models::ActiveStix::ToolOverride

This seems to be related to Rails issue 36100 , but that issue seems to describe how the main Rails app can override Engine models. It doesn't seem to work for one Engine overriding another Engine's models.

Answer 1

Answered in Github Issue

Rails.autoloaders.main.ignore(absolute/path/to/app/overrides) ignores the overrides directory.

config.autoloader =:classic uses previous Rails autoloader instead of zeitwerk.