Use propshaft for administrate assets

Previously administrate was including sprockets, the newer versions of administrate remove the dependency on sprockets but it appears you still need some asset provider.

I could use sprockets again, but instead move to the future and use propshaft. As far as I can see it's only administrate that needs this. I've also tested Flipper UI works fine.

I've removed teh old config which only applies to sprockets.

Author: zetter-rpf

Gemfile

@@ -37,6 +37,7 @@ gem 'open-uri'
 gem 'paper_trail'
 gem 'pg', '~> 1.6'
 gem 'postmark-rails'
+gem 'propshaft'
 gem 'puma', '~> 7.2'
 gem 'rack_content_type_default', '~> 1.1'
 gem 'rack-cors'

Gemfile.lock

@@ -346,6 +346,10 @@ GEM
       prettyprint
     prettyprint (0.2.0)
     prism (1.9.0)
+    propshaft (1.3.1)
+      actionpack (>= 7.0.0)
+      activesupport (>= 7.0.0)
+      rack
     pry (0.15.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -611,6 +615,7 @@ DEPENDENCIES
   paper_trail
   pg (~> 1.6)
   postmark-rails
+  propshaft
   pry-byebug
   puma (~> 7.2)
   rack-cors

app/assets/config/manifest.js

@@ -48,8 +48,6 @@ class Application < Rails::Application
       g.test_framework :rspec
     end
 
-    config.assets.css_compressor = nil
-
     config.active_job.queue_adapter = :good_job
 
     config.to_prepare do

config/application.rb

@@ -25,12 +25,6 @@
   # Disable serving static files from `public/`, relying on NGINX/Apache to do so instead.
   # config.public_file_server.enabled = false
 
-  # Compress CSS using a preprocessor.
-  # config.assets.css_compressor = :sass
-
-  # Do not fall back to assets pipeline if a precompiled asset is missed.
-  config.assets.compile = false
-
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.asset_host = "http://assets.example.com"