Question Conflict File Path with gem about zeitwerk

[cobafan]

I apologize, I found other problem.

I took a misstake dupricated select autoload path.
I appriciate your comment.

config.autoload_paths += %W(#{config.root}/app/models/)
config.autoload_paths += %W(#{config.root}/app/models/hoge)

[fxn]

The Foo class is not owned by your project, apparently, but a gem defines it, and your app reopens it.

So this particular class/module cannot be autoloaded/reloaded and Zeitwerk cannot handle it.

To see what you could do, could you please share the example with actual class/module name and give a bit more of context about it? It acts as namespace too? Tell us a bit more please.

[fxn]

Ah, is the gem an engine?

[cobafan]

Yes, This is engine.

[cobafan]

ex:

# vendor/bundle/ruby/2.5.0/bundler/gems/whose-gem/lib/whose-gem/engine.rb

module WhoseGem
  class Engine < ::Rails::Engine
    isolate_namespace WhoseGem
  end
end

# vendor/bundle/ruby/2.5.0/bundler/gems/whose-gem/app/models/hoge.rb

class Hoge
end

# app/models/hoge.rb

require "#{WhoseGem::Engine.root}/app/models/hoge.rb"
class Hoge
end

[fxn]

The autoload paths of the application take precendence over the autoload paths of engines. That means, Rails is going to consider your foo.rb first, and disregard the one in the engine as something (not) autoloadable.

I believe the following would work:

# app/models/hoge.rb
load "#{WhoseGem::Engine.root}/app/models/hoge.rb"
class Hoge
end

It is important to use load, because when Hodge is reloaded, you want to evaluate the file in the engine again.

Can you try please?

[cobafan]

I appreciate your advice.
I try to use load tomorrow morning!

[cobafan]

I try to use load. but, not load. error is uninitialized constant error.
Is there likely another problem if not work load?

[fxn]

Probably. Can you reproduce in a minimal application?

[cobafan]

I try.

[cobafan]

I tried to reproduction, but i cannot.
maybe, exists other problem?

I keep doing reproduce. but you may probably clone this issue.
I appreciate your comment.

mountable enfine gem
https://github.com/cobafan/sample_mountable_engine

minimum-RailsApplication
https://github.com/cobafan/min-app