Offline apps and Asset pipeline Problem in rails3.2

I have a question about using rack-offline with asset pipeline in
rails3.2.2. rack-offline creates application.manifest for local caching.
This gem watches file modification then re-generate hash-key in

I confuse offline apps with asset pipeline. asset pipeline provides
variable paths file to assets/foo.js (actually
app/assets/javascript/foo.js). I use config.assets.debug = false now
set cache 'assets/application.js', but this does not detect file

How to write configure of rack-offline? Would you give me help and
recommend any example or article? Or alternative solution exists?

This is my incomplete note:

Below is my textbooks:

Kenichi Murahashi