rails ip 辨識國家

how-to-know-user-location-with-rails
github geoip
Super fast IP to lat/lng in Rails

下載點 http://geolite.maxmind.com/download/geoip/database/

<br />IP_COUNTRY = GeoIP.new("#{Rails.root}/public/GeoIP.dat")<br /><br />IP_COUNTRY.country(request.remote_ip)<br />