How about:
class MappedBlankableEmail[T<:Mapper[T]](owner: T, maxLen: Int) extends
MappedString[T](owner, maxLen) {
override def setFilter = notNull _ :: toLower _ :: trim _ ::
super.setFilter
override def validate =
(if (*i_is_!.length == 0 ||
*MappedEmail.emailPattern.matcher(i_is_!).matches)
Nil else List(FieldError(this, Text(S.??("invalid.email.address"))))) :::
super.validate
}
On Wed, Apr 22, 2009 at 8:10 PM, g-man <gregor...@gmail.com> wrote:
>
> All is going well with my Lift learning...
>
> The form field validations are working well, and I especially like the
> field object types that know what they are, like 'email'.
>
> My question is:
>
> How do I tell Lift that a Contact's email is optional (empty string is
> OK), but if it is provided, then validate it?
>
> This is not for the regular User model, but only for Contacts I am
> entering in an address book.
>
> Thanks!
>
> >
>
--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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