UA-UTILS

Utilities to parse user-agent strings.

First implementation is mainly focusing on most common operating systems and device types, so that content can be optimized.

In your Gemfile:

gem 'ua-utils'

bundle install and restart your server to make the files available.

user_agent = UaUtils::UserAgent.new(user_agent_string)
or
os = UaUtils::OperatingSystem.new(user_agent_string)

Following operating systems can be detected:
windows, windows phone, mac os x, iOS, android, bada, meego, symbian

Following device types can be detected:
desktop, tablet, mobile, tv, bot

http://rubydoc.info/github/HaraldWalker/ua-utils/frames/file/README.md