I am trying to fix this problem almost the other day.
I am trying to run my ruby ββon rails website in production mode, but (some of them) it is not possible to service the assets. Images are located in a user subfolder (app / assets / audio / testfolder / demo.png), which is added to Rails.application.config.assets.paths and precompiled correctly, but I always get an error
ActionView::Template::Error (The asset "demo.png" is not present in the asset pipeline.)
or more specifically:
I, [2017-09-25T00:38:32.859541 #41037] INFO -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] Started GET "/" for 127.0.0.1 at 2017-09-25 00:38:32 +0200 I, [2017-09-25T00:38:32.860377 #41037] INFO -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] Processing by TestControllerController#index as HTML I, [2017-09-25T00:38:32.861240 #41037] INFO -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] Rendering test_controller/index.html.erb within layouts/application I, [2017-09-25T00:38:32.861558 #41037] INFO -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] Rendered test_controller/index.html.erb within layouts/application (0.1ms) I, [2017-09-25T00:38:32.863790 #41037] INFO -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] Completed 500 Internal Server Error in 3ms F, [2017-09-25T00:38:32.864505 #41037] FATAL -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] F, [2017-09-25T00:38:32.864789 #41037] FATAL -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] ActionView::Template::Error (The asset "demo.png" is not present in the asset pipeline.): F, [2017-09-25T00:38:32.865058 #41037] FATAL -- : [dd7b2824-614f-4e55-ba32-83548f79b2e1] 10: [dd7b2824-614f-4e55-ba32-83548f79b2e1] 11: <body> [dd7b2824-614f-4e55-ba32-83548f79b2e1] 12: <%= yield %> [dd7b2824-614f-4e55-ba32-83548f79b2e1] 13: <%= image_tag(yield(:img)) %> [dd7b2824-614f-4e55-ba32-83548f79b2e1] 14: <audio src="<%= audio_path(yield(:audio))%>" type="audio/mpeg" controls preload="none"></audio> [dd7b2824-614f-4e55-ba32-83548f79b2e1] 15: </body> [dd7b2824-614f-4e55-ba32-83548f79b2e1] 16: </html>
The image can be accessed using localhost: 81 / assets / demo-57cec01fc3b0b102085dc4de14576f8fd86f8298aed121ce17245df0546276d4.png, so the web server (caddy) does not seem to be a problem.
I had a simple demo project on github ( https://github.com/Kafkalasch/RailsAssetsErrorDemo ) to easily reproduce the problem.
Just clone the project, pre-combine the rails assets:precompile , start the caddy server with the given Caddyfile, caddy -conf Caddyfile and start puma with config / puma.production.rb puma -C RubyDemo/config/puma.production.rb
I use: ruby ββ2.4.1 puma 3.10.0 rails 5.1.4 caddy 0.10.6
I could reproduce this problem on Debian and Mac OS X, so I do not assume that the OS matters.
I want to use my web server for working with static files, so I'm looking for a different solution than just setting config.assets.compile = true
Does anyone have an idea or any hint on how I can solve my problem?
I am grateful for any answer.