[CDBI] Class::DBI::Untaint

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Hi all!

I have a web application that is using Class::DBI::Untaint to verify a 
URL is indeed a URL (CGI::Untaint::url).

My problem is that the URL field is optional so sometimes the user will 
not enter any information at all in this field. When they do this they 
get the usual validate_column_values error!

Is there some way to make the validation optional - ie - to check the 
URL for validity ONLY if the user has entered a value?

Thanks
Jay

P.S - Apologies if this should have been posted elsewhere but I was 
unsure where else to post it?!?

        -- 
        bingo, bango, bosh...

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