On Nov 15, 2011, at 11:03 AM, Jay wrote:

> In my app some input fields are optional. As an example, currently
> IS_DATE() forces the date to be present. I was wondering if it makes
> sense to allow Null or '' (empty) dates and then use IS_NOT_EMPTY() to
> force a value to be present in that field.
> 
> In general, does it appeal to web2py users to use this approach? Can
> we change validators to allow this? I am happy to supply patches for
> all affected validators, if it is agreeable. It would certainly be
> more flexible.
> 
> For now I have been writing a changed copy of the needed validators in
> my db.py file. Is there a better way to do it?

IS_EMPTY_OR(IS_DATE())

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