Hi,
I work on a website with many css files. To improve the performance of
the site I would to merge all my css file into one on the production
site.
I know I could do this using plugins, but I heard it is possible
natively within rails.
You don’t have to use true either - you can use a string (so if you have more than one layout each using a different set of stylesheets you can create individual cache files for each layout).