CSS is not hot reloading with Rails 8.0.1

[bobrocke]

I've installed the gem with:

group :development do
  gem "hotwire-spark"
end

and then bundle, but changes to CSS are not noticed or reloaded. My CSS is in a default path: app/assets/stylesheets/custom.css and the server seems to confirm Spark is working:

Started GET "/hotwire-spark" for 127.0.0.1 at 2025-02-17 07:47:32 -0500
Started GET "/hotwire-spark" [WebSocket] for 127.0.0.1 at 2025-02-17 07:47:32 -0500
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: keep-alive, Upgrade, HTTP_UPGRADE: websocket)
Hotwire::Spark::Channel is transmitting the subscription confirmation
Hotwire::Spark::Channel is streaming from hotwire_spark

Is there something else to configure?

[codergeek121]

I cannot reproduce this on my apps. If you can provide me a reproduction I'll take a look if I can spot the issue 👍

[bobrocke]

So it sounds like I have something misconfigured.

This repo for a mini-app has the problem. https://github.com/bobrocke/www.br.ru

Thanks for looking!

[bobrocke]

@alex, on Stack Overflow, provided a fix. Moving my .css file from app/assets/stylesheets to app/assets/builds fixed the problem. Does that suggest the Hotwire Spark docs are wrong to say By default: app/assets/stylesheets or app/assets/builds if exists?

[bobrocke]

Adding Rails.application.config.hotwire.spark.css_paths << "app/assets/stylesheets" to my configuration now allows hot reloading from there.