From: Trevor Elliott <trevor@...>
Date: 2006-11-07T16:20:12+09:00
Subject: CGI and POST/PUT URL Variables

Hi Everyone,

I encountered a strange problem when trying to write a cgi script to 
handle a PUT/POST scenario for a set of REST-style web services I'm 
writing in Ruby.

If I do a normal post to a url, say:

/cgi-bin/cgi.rb?a=1&b=1

The params attribute in the CGI class contains {'a'=>'1', 'b'=>'1'}. 
However, when doing a PUT or POST to the same URL, the params hash 
contains two elements, one that's empty, and the other that is keyed on 
the payload to the PUT/POST operation.

Can anyone see my error?

Thanks!

-Trevor Elliott


#!/usr/bin/ruby
#
# CGI script

require 'cgi'
require 'stringio'

cgi     = CGI.new
cgi.out('type' => 'text/plain') {
   $stderr.write("handling #{cgi.request_method} request")
   cgi.params.inject(StringIO.new) { |out,value|
     value.each { |item| out << 'Item: ' << item << "\n" }
     out
   }.string
}



#!/usr/bin/env ruby
#
# Test script
# uses the ruby-json gem

require 'net/http'
require 'uri'

require 'rubygems'
require 'json/objects'

host = URI.parse('http://127.0.0.1:8080/cgi-bin/cgi.rb?thing=1')
req  = Net::HTTP::Put.new(host.path + '?' + host.query)
req.body = {:id => 1, :name => 'test'}.to_json
req.set_content_type('text/plain')
puts req.body
puts req.path

res  = Net::HTTP.new(host.host, host.port).start { |http|
   http.request(req)
}
puts res.body