I am using the ruby Gem cssbundling-rails and dart-sass to process Sass in a Rails 7 app (and I am fairly new to Rails).
In the package.json file I define the build:css script:
"build:css": "sass ./app/assets/stylesheets/application.scss ./app/assets/builds/application.css --no-source-map --load-path=. --load-path=./node_modules --load-path=./node_modules/@rpf/sauce --load-path=app/assets/stylesheets/"
This appears to be working; I see the results of several Sass files bundled and processed into one CSS file: app/builds/application.css.
However I cannot see how to add this file to my page. We use Slim so I include the line
= stylesheet_link_tag 'application'
in the app/views/components/_head.html.slim file. That results in this fragment in the final HTML:
<link rel="stylesheet" href="/assets/application-e0cf9d8fcb18bf7f909d8d91a5e78499f82ac29523d475bf3a9ab265d5e2b451.css" />
If I load that file (application-e0cf9d8fcb18bf7f909d8d91a5e78499f82ac29523d475bf3a9ab265d5e2b451.css) into my browser I see it is an empty manifest file which starts
* This is a manifest file that'll be compiled into application.css, which will include all the files
* listed below.
and has no files listed below.
What am I missing? How do I load the CSS that was bundled and processed from Sass files into the app/builds/application.css file into my Slim page?
A simple fix is to add
to app/views/components/_head.html.slim instead.