"prefilled" Tuple

Plone Support Customizing Plone
1

I want to make a Tuple (of dates) for a content type, where at least one date is required.
When I add the content type, we need to 'add the first'

Is there a way to have one 'pre added" , so we only need to add another if we want two or more ?

2

Check the documentation for Default values for fields on add forms if this is a Dexterity-based content type.

3

Great, this works:

def theDefaultValue():
    return datetime.date.today() - datetime.timedelta(1)

class IDate(schema.Date):
    date=schema.Date(
            title=_(u"Dato"),
    )
    
class IGabrielBehavior(form.Schema):
    """  """
    
    dates = schema.Tuple(
    	title=_(u"Datoer"),
    	required=True,
    	default = (theDefaultValue(),),
    	value_type=IDate(
            title=_(u"Dato"),
        )
)