From: Tim Pease <tim.pease@...>
Date: 2009-10-23T06:15:08+09:00
Subject: Re: sanitizing html tags (content)

On Oct 22, 2009, at 12:03 PM, Aljaz Fajmut wrote:

> Hello,
>
> I have a variable which holds the following html code:
>
> <object width="425" height="344"><param name="movie"
> value="http://www.youtube.com/v/6fEogbKnNcQ&hl=en&fs=1&"></ 
> param><param
> name="allowFullScreen" value="true"></param><param
> name="allowscriptaccess" value="always"></param><embed
> src="http://www.youtube.com/v/6fEogbKnNcQ&hl=en&fs=1&"
> type="application/x-shockwave-flash" allowscriptaccess="always"
> allowfullscreen="true" width="425" height="344"></embed></object>
> <span>some text<a href="..">link</a> .. </span>
>
>
> Now I'd like to process it so that everything would be stripped except
> object/param/embed tags (span tag and its content should be removed).
>
> What is the best way to compliment that?
>
> I've installed sanitize gem but it wont allow me to strip/remove  
> content
> inside html tags as well.
>
> I though of regex but I'm unsure about this.
>
> Many thanks for help!

Have a look at nokogiri. It will parse the HTML for you and you can  
then tinker with it as you please. After you're done, just write it  
back out as a string.

Blessings,
TwP