I also like using localhost:3000/rails/info/routes
This is a very visual way to access and filter the routes in your project from a browser interface.

There seem to be a catch when using `--css tailwind`. When you add the @import at the end of the `application.tailwind.css` file the imported styles are not loading. While if you place them before the @tailwind lines everything works as planned.

I encountered this issue when I tried to add actiontext to a project configured with tailwind css. The actiontext.css file was placed after the @tailwind lines and Trix style was'nt applied.

My configuration:
Rails 7.0.1 with tailwind and esbuild
Ruby 3.0.3

  marklar did you try following  David Kimura  tutorial?

I spotted this other CUPS gem https://github.com/m0wfo/cups last updated on 2021
Why did you favor cupsffi over cups?

Update. [not sure if this was introduced in Rails 7 or before]
Instead of hardcoding the URL in the postURL method, it is possible to use the direct_upload: true in the file field and retrieve its value calling this.inputTarget.dataset.directUploadUrl