Tag: Rack
Ruby gem geoip and Rack::GeoIPCountry
by Samson on Feb.25, 2010, under Ruby, Technique
wikipedia上对于geolocation的解释是这样的：
Geolocation is the identification of the real-world geographic location of an Internet-connected computer, mobile device, website visitor or other.
检测的方法貌似也有很多：
Geolocation can be performed by associating a geographic location with the Internet Protocol (IP) address, MAC address, RFID, hardware embedded article/production number, embedded software number (such as UUID, Exif/IPTC/XMP or modern steganography), invoice, Wi-Fi connection location, or device GPS coordinates, or other, perhaps self-disclosed information.
（班门弄斧一下先，呵呵呵呵）
ruby里面取到geo信息的一个相对方便的办法是使用rubygem geoip，虽然本质上还是使用maxmind的data，但是免去了编译和安装其c library的麻烦。
(continue reading…)
ruby’s “python -m SimpleHTTPServer”
by Samson on Feb.21, 2010, under Minds, Ruby, Technique
If I remembered right, the command below used to be the most voted one on commandlinefu.com:
the “SimpleHTTPServer” module is written in python and it maybe called “the python way”, but that’s not our topic today. what we really want to do here is just making a ruby equivalent for this popular command, using rack.
first, make sure you have rack gem installed on your system (if you’ve installed rails 2.x before, you may already have it):
confirm installation (Rack 1.0 should also work for our example):
Rack 1.1
alright, preparation is done, let’s start cooking. only a rackup file will be sufficient, for consistency, let’s just call it simple_http_server.ru .
#\ -E deployment
use Rack::ContentLength
app = Rack::Directory.new Dir.pwd
run app
