From: Robert Klemme <shortcutter@...>
Date: 2010-03-04T01:55:15+09:00
Subject: Re: Url parsing in ruby

2010/3/3 John Ydil <john.gendrot@cnsi.fr>:
> Hello,
>
> I use ruby to make some scriptings inside an html page.
> I made a form to pass variable in an URL.
> I need this variable in my ruby code, how can i get this variable ?
>
> my URL looks like http://localhost/mypage.rbx?var=nas002001
>
> I need the value after var=
>
> Thanks for your help.

Here's one way to do it:

$ irb19 -r uri
irb(main):001:0> u = URI.parse "http://localhost/mypage.rbx?var=nas002001"
=> #<URI::HTTP:0x1029adb0 URL:http://localhost/mypage.rbx?var=nas002001>
irb(main):002:0> v = u.query[/(?<=\A|&)var=([^&]*)/, 1]
=> "nas002001"

Note, error checking is missing from this example and it's probably
also not very robust.

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/