Post & put probelms with restclient

Hi all, I am hoping someone can shed some light on what I am doing wrong
here. I have a simple class that I created using the rails scaffold
script

TestServer
name :string
serverid :integer

I am trying to connect to it using restful webservices. Get and destroy
are working, but I cannot get post or put to work at all

my client code is very simple

#!/usr/bin/ruby

require ‘restclient’

result = RestClient.get ‘http://localhost:3000/testservers/1

print result

RestClient.post ‘http://localhost:3000/testservers’,:name=> ‘test server
c’

running this returns

<?xml version="1.0" encoding="UTF-8"?> 2009-02-24T22:10:30Z 1 test a 1 2009-02-24T22:10:30Z /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient/request.rb:136:in `process_result': HTTP status code 422 (RestClient::RequestFailed) from /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient/request.rb:99:in `transmit' from /usr/lib64/ruby/1.8/net/http.rb:543:in `start' from /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient/request.rb:95:in `transmit' from /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient/request.rb:34:in `execute_inner' from /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient/request.rb:26:in `execute' from /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient/request.rb:12:in `execute' from /usr/lib64/ruby/gems/1.8/gems/rest-client-0.9/lib/restclient.rb:57:in `post' from test.rb:12

anyone have any ideas about what I am missing here?

Thanks