From: 7stud -- <bbxx789_05ss@...>
Date: 2009-10-11T13:53:48+09:00
Subject: Re: Can't use variable from cgi with hpricot

Wiley Davis wrote:
> I'm trying to get a url from a form and return the page title of said
> url. I'm using cgi to get the web address from the url, which looks like
> this:
> 
> http%3A%2F%2Fpracticalpedal.com

> 
> 
> @linky = "http://practicalpedal.com"
> 

A cursory examination of those strings reveals that they are not 
identical.

> This works if I assign the @linky variable like so:
> @linky = "http://practicalpedal.com"

...and what about:

@linky = "http%3A%2F%2Fpracticalpedal.com"

??  That's the string you are getting from cgi.  You can test that by 
writing @linky to a .txt file and then examining the contents of the 
file.


require 'cgi'

str = "http://practicalpedal.com"
new_str = CGI.escape(str)
p new_str

--output:--
"http%3A%2F%2Fpracticalpedal.com"

Look familiar?


x = CGI.unescape(new_str)
p x

--output:--
"http://practicalpedal.com"

The rule: certain characters have to be 'transformed' in order to pass 
them in a query string attached to the end of a url.  That means the 
special characters have to be 'untransformed' on the other side.



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