Plone: override registry record, if it is not possible to delete them

Sometimes a plone.registry record can not deleted normally because of some exceptions. But it might be possible to override them with somthing new and clean.

Error on delete

Errors like this can happen, if you try to deleted a record and the underlying code is not valid.

TypeError: ('object.__new__(RegistryFieldDefaultFactory) is not safe, use Persistence.Persistent.__new__()', <function _reconstructor at 0x7f341b1c5a28>,
   (<class 'example.behavior.settings.example_settings.RegistryFieldDefaultFactory'>, <type 'object'>, None))

Override a record

You can start Plone in debug shell:

./bin/instance debug
portal = app.Plone
registry = portal.portal_registry
from plone.registry import Record
from plone.registry import field

registry.records['example.behavior.settings.example_settings.ISettings.projects'] = Record(
   field.TextLine(title=u"Projects"), u"Test")

import transaction
transaction.commit()

Delete the record

Now we can delete the record without an error.

del registry.records['example.behavior.settings.example_settings.ISettings.projects']

transaction.commit()