There is no persistent field equivalent for the field 'A' of type `B`

espenmn · October 26, 2017, 4:33pm

I am a bit busy at the moment, but is this what you want to do:

Have a control panel where you can set some settings, where one is a choice field with a dynamic vocabulary
Use this setting for other stuff in the site?

Maybe you can do it like this:

espenmn/medialog.leadimagesize/blob/master/medialog/leadimagesize/interfaces.py

from zope.interface import Interface
from z3c.form import interfaces
from zope import schema
from zope.interface import alsoProvides
#from plone.directives import form
from plone.supermodel import model
from medialog.controlpanel.interfaces import IMedialogControlpanelSettingsProvider

from zope.i18nmessageid import MessageFactory

_ = MessageFactory('medialog.leadimagesize')


class ILeadImageSize(Interface):
    """Marker interface for leadimagesize"""


class ILeadImageSizeSettings(model.Schema):
    """Adds settings to medialog.controlpanel
    """

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If not, the bda.plone.shop add-ons have a lot of 'complicated settings', I am pretty sure there is something there you can use: