Marius Gedminas wrote: > On Wed, Aug 27, 2008 at 05:15:48PM -0700, Stephan Richter wrote: >> On Wednesday 27 August 2008, Martin Aspeli wrote: >>> This means that if the request contains the empty-marker only (no >>> selection was made) for a checkbox widget (say), then the return value >>> is [], rather than default (NOVALUE). >>> >>> Is that a bug? I have a custom checkbox widget derived from the standard >>> checkbox widget, (z3c.formwidget.query, in fact), and I never get any >>> "required missing" exceptions, even when I untick all the checkboxes and >>> click OK. >>> >>> Am I missing something? >> I think you have a point. Have you tried changing the behavior to >> return "default" and see what tests fail? If no major failures come out of >> this, I would say change it. > > Wait a second, maybe I'm misunderstanding this, but I certainly oppose > any change that would make an unchecked checkbox an error during form > validation. > > A required Bool field can have two values: True or False. One is > represented by a checked checkbox, the other by an unchecked checkbox. > An unchecked checkbox is not missing input and should not trigger > "required missing" errors.
What about the case when you have a list of options of which you need to chose one or more? In that case, ticking none is a validation error. Martin -- Author of `Professional Plone Development`, a book for developers who want to work with Plone. See http://martinaspeli.net/plone-book _______________________________________________ Zope-Dev maillist - Zope-Dev@zope.org http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
