@view_config(renderer='templates/form.pt', name='dateparts')
    @demonstrate('Date Parts Widget')
    def dateparts(self):
        import datetime
        from colander import Range
        class Schema(colander.Schema):
            date = colander.SchemaNode(
                colander.Date(),
                widget = deform.widget.DatePartsWidget(),
                validator=Range(
                    min=datetime.date(2010, 1, 1),
                    min_err=_('${val} is earlier than earliest date ${min}')
                    )
                )
        schema = Schema()
        form = deform.Form(schema, buttons=('submit',))
        return self.render_form(form)