default_preview_layout and Gems

[tripptuttle]

I'm building a component library, packaged as a UI Gem, along with shared layouts and view templates. I'm trying to have previews use a skeleton layout instead of the default 'app/views/layouts/application'.

I've specified Rails.application.config.view_component.default_preview_layout = "components" however when trying to access the preview route from an application that uses my UI Gem, I'm getting a "Template is missing" error.

Template is missing
Missing template layouts/components with {:locale=>[:en], :formats=>[:html], :variants=>[], :handlers=>[:raw, :erb, :html, :builder, :ruby, :jbuilder]}. Searched in: * "/Users/mst49/workspace/sps-settings/app/views" * "/Users/mst49/.rvm/gems/ruby-3.1.2@sps-settings/gems/view_component-2.69.0/app/views" * "/Users/mst49/.rvm/gems/ruby-3.1.2@sps-settings/gems/railties-7.0.3.1/lib/rails/templates" Did you mean? layouts/application rails/info/properties rails/info/routes application/index rails/welcome/index rails/mailers/index

Rails apparently is searching for an app/views/layouts/components only in a very limited set of locations ⬆️. Elsewhere in my app, I have no issue specifying non-default templates located in my Gem. I've tried changing the preview_route as well with no luck.

From Rails guides:

When Rails looks for a view to render, it will first look in the app/views directory of the application. If it cannot find the view there, it will check in the app/views directories of all engines that have this directory.

My engine has that directory structure (app/views/layouts/components.html.erb), so I'm not sure why only in this case Rails isn't looking in my UI Gem for the template.

Anyone have any thoughts, or might this be a bug?

[joelhawksley]

@tripptuttle this sounds like a bug to me. Would you be able to provide a failing test on the repo or a separate repo that recreates the issue (using script/replicate-bug)? Of course, a PR would be the most welcome 😄

[tripptuttle]

Thanks for getting back on this. Been focused on some other stuff, but I will try to turn back to this next week and follow back up.

[joelhawksley]

Closing as outdated.