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From Timothy Larson <>
Subject Re: Woody - required vs validation
Date Fri, 22 Aug 2003 14:42:19 GMT
--- Antonio Gallardo <> wrote:
> I think you are right the correct approach is:
> A-required="true"  - field cannot be empty (NULL) and must be validated.
> B-required="false" - if (field is not empty) then validate.

Yes, clearly stated.  I thought about this some more and have another issue.
When using multi-field validation, the value in another field may determine
whether or not a field is required.  For this case A should be relaxed to:
  A-required="true"  - field may or may not be empty and must be validated.
Alternately, we could leave A as you stated and add this as a third case:
  C-required="maybe" - field may or may not be empty and must be validated.

If the validation logic is duplicated on the client with javascript, then
the visual indicator of whether a field is required could be dynamically
updated when the fields it depends on are changed.  This could also be
achieved with server-side logic, but would not be quite as dynamic as it
could only update the indicator on posts.

--Tim Larson

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