Question

To precompile all css files in a project I could add this to production.rb:

config.assets.precompile << '*.css'

But how can I add only css files in a particular folder?

Answer 1

Add all stylesheets into your app/assets/stylesheets/application.css:

/*
 *= require_self
 *= require_tree dir_one
 *= require_tree dir_two
 */ 

Then they will be precompiled. I think this is the preferred way over using config.assets.precompile.

If you really want to use it, this SO question should help: How do I use config.assets.precompile for directories rather than single files?