From: Robert Klemme <shortcutter@...>
Date: 2007-09-02T04:00:20+09:00
Subject: Re: Parsing query parameters from hyperlink

On 01.09.2007 19:34, lrlebron@gmail.com wrote:
> I am trying to parse strings like this
> <a href='showmono.asp?cpnum=1022&ampmonotype=comb' target='main'>
> 
> I need to get the cpnum value (555)
> 
> I am using the following function
> 
> def get_drugId(link)
>      arrParts = link.html.split('?')
>      cpnum = arrParts[1].split('&amp')
>      cpnumparts= cpnum[0].split("=")
>      drugId = cpnumparts[1]
>   end
> 
> but I imagine there is a simpler way to do this. Also, I would like
> something more flexible that would return all the query parameters (if
> there are more than one) in an array or a hash.
> 
> Any ideas?

The std lib:

require 'uri'

irb(main):006:0> u=URI.parse("http://foo/bar?dodo=1&dada=2")
=> #<URI::HTTP:0x3ff9814a URL:http://foo/bar?dodo=1&dada=2>
irb(main):007:0> u.query
=> "dodo=1&dada=2"
irb(main):008:0> u.query.split('&')
=> ["dodo=1", "dada=2"]
...

	robert