Rails S3 assets_sync configuration cheatsheet

Rails-assets_sync-cheatsheet.rb

# gemfile
gem 'asset_sync'

# application.rb
config.assets.initialize_on_precompile = true
config.assets.precompile += ['stuff.js', 'stuff.css']

# production.rb
config.assets.enabled = true

config.action_controller.asset_host = "//s3.amazonaws.com/#{ENV['FOG_DIRECTORY']}"
config.assets.prefix = "/production/assets"

# Terminal
heroku labs:enable user-env-compile -a appName

heroku config:set AWS_ACCESS_KEY_ID=xxx AWS_SECRET_ACCESS_KEY=xxx
heroku config:set S3_BUCKET_NAME=xxx
heroku config:add FOG_DIRECTORY=xxx
heroku config:add FOG_PROVIDER=AWS

# If doesn't precompile ...
heroku run rake assets:precompile