[SOLVED] InOut Widget not saving unless I select right column

In control panel (Plone 6.0.5), I have a List with an InOutWidget.
If I just add items to 'In', I can not save (see screenshot: Error is 'choose an object in the list').
If I click on any item, I can save.

Any idea how to troubleshoot / fix this?

There is a closed PR on plone.app.z3cform OrderedSelectWidget: preselect the saved values to fix browser validation of required input by petschki · Pull Request #178 · plone/plone.app.z3cform · GitHub

Thanks (I could not figure out that its name is 'OrderedSelectWidget', kept searching for 'InOutWidget' :slight_smile: )

The OrderedSelectWidget widget is missing from the list of fields included in Plone: 20. Dexterity: Reference – Mastering Plone 6 Development — Plone Training 2023 documentation

I need to set 'the order of the fields', is there another way of doing this.

(In my control panel, I choose which fields (and in which order) should render in my 'table-view')

UPDATE: Maybe using DataGridField with ChoiceField could be an option.

Example below is from a Plone 5.2 site. This approach does not work anymore?

# -*- coding: UTF-8 -*-
from plone.app.registry.browser import controlpanel
from Products.CMFPlone import PloneMessageFactory as _
from zope import schema
from zope.interface import implementer
from zope.interface import Interface
from zope.schema.interfaces import IVocabularyFactory
from zope.schema.vocabulary import SimpleVocabulary
from zope.component import queryUtility
from plone.registry.interfaces import IRegistry

class ImageScalesVocabulary(object):

    def __call__(self, context):
        registry_key = 'collective.behavior.dryslider.browser.controlpanel.IDRYSliderSettings.image_scales'
        registry = queryUtility(IRegistry)

        terms = []

        if registry is not None:
            for image_scale in registry.get(registry_key, ()):
                # create a term - the arguments are the value, the token, and
                # the title (optional)
                terms.append(SimpleVocabulary.createTerm(image_scale, image_scale, image_scale))

        return SimpleVocabulary(terms)

class IDRYSliderSettings(Interface):

    types = schema.List(
        description=_(u'Types displaying inherited banners'),
            'News Item'

    image_scales = schema.List(
        title=_(u'Slider scales'),
        description=_(u'Scales at which slider images can be displayed'),


class DRYSliderSettingsEditForm(controlpanel.RegistryEditForm):

    schema = IDRYSliderSettings
    label = _(u'Slider settings')
    description = _(u'')

    def updateFields(self):
        super(DRYSliderSettingsEditForm, self).updateFields()

    def updateWidgets(self):
        super(DRYSliderSettingsEditForm, self).updateWidgets()

class DRYSliderControlPanel(controlpanel.ControlPanelFormWrapper):
    form = DRYSliderSettingsEditForm

No, there is an issue with inline validation, read answer from Jan

For reference: That aproach works, but you need to use another (not the default) widget for the choice field:

class ITableRows(model.Schema):
row_title = schema.TextLine(
    title=_(u'Table title', 'Table title'),

row_field = schema.Choice(
    title=_(u"Field", default=u"Field"),

table_columns = schema.List(
    title = _(u"Table Columns",
        default=u"Table Column fields"),

PS: row_title can be skipped.