[html-formfu] How do I constrain a field that's not required?
fireartist at gmail.com
Sat Sep 1 21:42:23 GMT 2007
On 01/09/07, Barry Hoggard <bhoggard at gmail.com> wrote:
> I have a form with an optional URL field. How do I constrain that to
> be a valid URL, but only if the user enters something? I don't want
> it to be required.
All constraints should pass if the value is missing or the empty
string - if it doesn't, it's a bug.
The Regex constraint docs have an example for matching a URL.
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