Possible issue with Rails 7 (alpha 2)

[matt17r]

I can't get any views working on a brand new Rails 7 app (Rails 7.0.0.alpha2) with Haml (Haml 5.2.2) installed via haml-rails (2.0.1).

Steps to reproduce:

• rails new myapp --database=postgresql --javascript esbuild --css tailwind
• Add gem "haml-rails", "~> 2.0" to Gemfile and bundle
• Run rails haml:erb2haml to migrate view templates
• Run rails g scaffold test and rails db:migrate
• visit http://localhost:3000/tests

Expect to see scaffolded "Tests" page but actually get a "406 Not Acceptable" error:

ActionController::UnknownFormat (TestsController#index is missing a template for this request format and variant.

request.formats: ["text/html"]
request.variant: []):

Am I missing something obvious or doing something blatantly wrong?

If not, I'm happy to try and dig into this a little bit but I have no idea where to start so if anyone has some pointers on where to look I'd appreciate that. I did take a quick look at #1008 to see if that had any clues about how Haml works or what might need to change to support a new major version but I'm none the wiser.

[matt17r]

Good news, I was both missing something obvious and doing something blatantly wrong. HAML wasn't in the list of available variants because I hadn't restarted the server 🤦‍♂️