Question

I have added these two lines to application.rb:

config.assets.initialize_on_precompile = false

config.assets.compile = true

However I still get errors when I push to Heroku:

2012-02-05T09:48:34+00:00 app[web.1]: Completed 500 Internal Server Error in 3ms
2012-02-05T09:48:34+00:00 app[web.1]: 
2012-02-05T09:48:34+00:00 app[web.1]: ActionView::Template::Error (bootstrap.css isn't precompiled):

Any suggestions?

Answer 1

By the looks of it you have a bootstrap.css file that is not included properly in your manifest file within app/assets/stylesheets and that you’re probably also calling directly from a stylesheet_tag.

There are a couple of approaches to this:

1. You could add a line to your environment config file which will ensure the css file you’re calling is precompiled:

config.assets.precompile += %w( bootstrap.css )

…for example.

2. This is the one i would probably do; include the bootstrap.css file in a manifest file inside `app/assets/stylesheets’ as mentioned above. Your manifest file will look something like this (not sure if the formatting of this will appear correctly on here, so i have also created a Gist: https://gist.github.com/1753229):

/*
*= require bootstrap
*/

/* rest of file omitted */

You might need to require more files than that depending on what your css setup is.