Rails 4 Asset Pipeline: Asset missing fingerprint in asset_path from js

Question

I am deploying a Rails 4.0 application which includes HTML partial templates as assets for our front-end javascript framework. Although these templates are part of the asset pip

Answer 1

This appears to be an issue with the AssetSync gem. I removed it, reconfigured the app so that Rails serves the assets, and the fingerprinting works fine.

If anyone else finds this question and is running into the same issue, I would recommend against using AssetSync. According to Heroku:

Many developers make use of Amazon’s S3 service for serving static assets that 
have been uploaded previously, either manually or by some form of build process.
Whilst this works, this is not recommended as S3 was designed as a file storage 
service and not for optimal delivery of files under load. Therefore, serving 
static assets from S3 is not recommended.

Amazon CloudFront is the preferred method of serving assets through a CDN, and is very easy to configure with a Rails app that serves its own static assets, accomplishing the same goals as AssetSync.