Serving Assets on 'static' subdomain

Question

How can I configure rails to serve assets on different subdomain? I basically want view/assets helpers to use subdomain for all static files, such as;

• instead of example.com/application.css -> static.example.com/application.css
• instead of example.com/application.js -> static.example.com/application.js
• instead of example.com/logo.jpg -> static.example.com/logo.jpg

Answer 1

do you know about the asset_host option?

# config/environments/production.rb
config.action_controller.asset_host = "static.example.com"

it's also possible to do dynamic names:

ActionController::Base.asset_host = Proc.new { |source|
  "http://assets#{Digest::MD5.hexdigest(source).to_i(16) % 2 + 1}.example.com"
}

http://api.rubyonrails.org/classes/ActionView/Helpers/AssetTagHelper.html