[Zope] How to filter unwanted strings within a form's textarea?

[Dan L. Pierson]

Chris Withers has a product to do this on zope.org.  Sorry, I can't 
remember
the name at the moment but a search for 'HTML' and 'filter' will probably
find it.

--On Thursday, July 12, 2001 08:43:54 AM -0500 Ausum <augusto@artlover.com> 
wrote:

> I need my local users to create content using html tags within a
> textarea, but I don't want them to include links to external images
> resources.
>
> My idea is to enable a filter that looks for the
> "http://www.whatever_ext_site.com" string within the img tag, and then
> erase it before posting the whole form data to the proper method.
>
> Is there a simple way for doing this?
> (If not, what is the hard way? :)  )
>
> Thanks in advance,
>
>
> Ausum
>
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