What is the recommended way to pass the current date/datetime as TALES expression to a date/datetime field inside an EasyForm? In PFG, you could use python: DateTime(). Is there something pre-defined for collective.easyform?
Or let me be more precise...this field configuration causes an error because the converter assumes that the underlying value is of type datetime, not DateTime.
<field name="datum" type="zope.schema.Datetime" easyform:TDefault="python: DateTime()" easyform:serverSide="False" easyform:THidden="False">
<description/>
<title>Datum</title>
</field>
Traceback (innermost last):
Module ZPublisher.WSGIPublisher, line 181, in transaction_pubevents
Module ZPublisher.WSGIPublisher, line 390, in publish_module
Module ZPublisher.WSGIPublisher, line 284, in publish
Module ZPublisher.mapply, line 98, in mapply
Module ZPublisher.WSGIPublisher, line 68, in call_object
Module plone.z3cform.layout, line 61, in __call__
Module plone.z3cform.layout, line 45, in update
Module collective.easyform.browser.view, line 336, in update
Module plone.z3cform.fieldsets.extensible, line 62, in update
Module plone.z3cform.patch, line 31, in GroupForm_update
Module z3c.form.group, line 133, in update
Module z3c.form.form, line 140, in updateWidgets
Module z3c.form.field, line 278, in update
Module plone.app.z3cform.widgets.base, line 141, in update
Module plone.app.z3cform.widgets.base, line 125, in update
Module z3c.form.browser.widget, line 162, in update
Module Products.CMFPlone.patches.z3c_form, line 48, in _wrapped
Module z3c.form.widget, line 131, in update
Module plone.app.z3cform.converters, line 86, in toWidgetValue
TypeError: unsupported format string passed to method.__format__
The underlying converter does not seem to handle DateTime:
@adapter(IDatetime, IDatetimeWidget)
class DatetimeWidgetConverter(BaseDataConverter):
"""Data converter for datetime fields."""
def toWidgetValue(self, value):
"""Converts from field value to widget.
:param value: Field value.
:type value: datetime
:returns: Datetime in format `Y-m-d H:M`
:rtype: string
"""
if value is self.field.missing_value:
return ""
return (
f"{value.year:}-{value.month:02}-{value.day:02}T"
f"{value.hour:02}:{value.minute:02}"
)
