Rails: Application. Css Not in Asset Pipeline
I Know This Is a Old Question but No Answer Is Fixing My Problem. I'm New to Ruby on Rails and Just Created Project with a Postgresql Database Just to Be Able...
I know this is a old question but no answer is fixing my problem.
I'm new to Ruby on Rails and just created project with a PostgreSQL database just to be able to upload the project to Heroku.
When i start the rails server im getting the error "application.css is not present in the asset pipeline."
I'm using bootstrap 4 gem and this requires that you rename the applications.css to application.scss.
I dont know what is wrong.
I really tried every answer that is on stackoverflow without any success :(
Please help me, what am i doing wrong?
This is the error im getting:
6 Answers
Ok, first thing.
Do you have config.serve_static_files = true set in your production.rb file under config/environment folder.
Since we run behind NGINX, in our case it looks like config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
Second thing. Did you do rails assets:precompile before the uploading it to the server?
And the third thing is. Have you tried calling your file application.css.scss, and redoing the rails assets:precompile?
Last, and not least thing. How does your application.scss file look like?
Did you remove all those *= and used @import instead for Bootstrap
It is nicely described in the documentation:
Import Bootstrap styles in app/assets/stylesheets/application.scss:
// Custom bootstrap variables must be set or imported before bootstrap. @import "bootstrap";
And then it says:
Make sure the file has .scss extension (or .sass for Sass syntax). If you have just generated a new Rails app, it may come with a .css file instead. If this file exists, it will be served instead of Sass, so rename it:
$ mv app/assets/stylesheets/application.css app/assets/stylesheets/application.scss Then, remove all the *= require and *= require_tree statements from the Sass file. Instead, use @import to import Sass files.
Do not use *= require in Sass or your other stylesheets will not be able to access the Bootstrap mixins and variables.
Read more here
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origin answer
in my case, I forgot to install yarn command in my server.
so, please install yarn before running rails server. otherwise assets:precompile will do nothing and give no warning.
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