Geolocation with MaxMind's GeoIP and the geoip-city RubyGem

2 h2. Install GeoIP library <code> wget http://www.maxmind.com/download/geoip/api/c/GeoIP.tar.gz tar -zxvf GeoIP.tar.gz cd GeoIP ./configure --prefix=/opt/GeoIP make && sudo make install </code> h2. Install the geoip-city gem <code> gem install geoip_city -- --with-geoip-dir=/opt/GeoIP </code> h2. Test the bindings <code> curl -O http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz gunzip GeoLiteCity.dat.gz </code> Fire up IRB and try the following code: <code> require 'rubygems' require 'geoip_city' db = GeoIPCity::Database.new('GeoLiteCity.dat') result = db.look_up('192.143.34.23') p result </code> Another option is to use hostip.info's database, as described in "this article":http://blog.hungrymachine.com/2007/10/22/super-fast-ip-to-lat-lng-in-rails. h2. Create a wrapper <code> require 'rubygems' require 'geoip_city' require 'ostruct' class Location < OpenStruct end class GeoIP class << self DB = GeoIPCity::Database.new('GeoLiteCity.dat') def lookup(ip) if result = DB.look_up(ip) location = Location.new # # {:country_code=>"FR", :country_code3=>"FRA", :country_name=>"France", :latitude=>46.0, :longitude=>2.0} # result.each do |key, val| location.send "#{key}=", val end end location end end end </code> h2. Add some Rails caching Combined with the above code this will give you cached IP lookups: <code> class GeoIP class << self def lookup_with_caching(ip) Rails.cache.fetch(ip, :expires_in => 1.month) do lookup_without_caching(ip) end end alias_method_chain :lookup, :caching end end </code> h2. Alternatives If you're unable to install the C extension you might want to have a look at the geoip gem, which is a pure Ruby library that can read the MaxMind's geoip database. It's slower but easier to install: "http://geoip.rubyforge.org/":http://geoip.rubyforge.org/ 0

2008-04-18T00:21:04+03:00

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<h2>Install GeoIP library</h2> <pre class="active4d"> 1 wget http://www.maxmind.com/download/geoip/api/c/GeoIP.tar.gz 2 tar -zxvf GeoIP.tar.gz 3 cd GeoIP 4 ./configure --prefix=/opt/GeoIP 5 make && sudo make install </pre> <h2>Install the geoip-city gem</h2> <pre class="active4d"> 1 gem install geoip_city -- --with-geoip-dir=/opt/GeoIP </pre> <h2>Test the bindings</h2> <pre class="active4d"> 1 curl -O http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz 2 gunzip GeoLiteCity.dat.gz </pre> Fire up IRB and try the following code: <pre class="active4d"> 1 require 'rubygems' 2 require 'geoip_city' 3 db = GeoIPCity::Database.new('GeoLiteCity.dat') 4 result = db.look_up('192.143.34.23') 5 p result </pre> Another option is to use hostip.info’s database, as described in <a href="http://blog.hungrymachine.com/2007/10/22/super-fast-ip-to-lat-lng-in-rails">this article</a>. <h2>Create a wrapper</h2> <pre class="active4d"> 1 require 'rubygems' 2 require 'geoip_city' 3 require 'ostruct' 4 5 class Location < OpenStruct 6 end 7 8 class GeoIP 9 class << self 10 DB = GeoIPCity::Database.new('GeoLiteCity.dat') 11 12 def lookup(ip) 13 if result = DB.look_up(ip) 14 location = Location.new 15 16 # 17 # {:country_code=>"FR", :country_code3=>"FRA", :country_name=>"France", :latitude=>46.0, :longitude=>2.0} 18 # 19 result.each do |key, val| 20 location.send "#{key}=", val 21 end 22 end 23 24 location 25 end 26 end 27 end </pre> <h2>Add some Rails caching</h2> Combined with the above code this will give you cached IP lookups: <pre class="active4d"> 1 class GeoIP 2 3 class << self 4 def lookup_with_caching(ip) 5 Rails.cache.fetch(ip, :expires_in => 1.month) do 6 lookup_without_caching(ip) 7 end 8 end 9 10 alias_method_chain :lookup, :caching 11 end 12 end </pre> <h2>Alternatives</h2> If you’re unable to install the C extension you might want to have a look at the geoip gem, which is a pure Ruby library that can read the MaxMind’s geoip database. It’s slower but easier to install: <a href="http://geoip.rubyforge.org/">http://geoip.rubyforge.org/</a>

Geolocation with MaxMind's GeoIP and the geoip-city RubyGem

2009-11-29T13:29:03+02:00