def _del_db_extra(self, key):
from aiida.backends.djsite.db.models import DbExtra
if not DbExtra.has_key(self.dbnode, key):
raise AttributeError("DbExtra {} does not exist".format(
key))
return DbExtra.del_value_for_node(self.dbnode, key)
self._increment_version_number_db()
def del_extra(self, key):
from aiida.backends.djsite.db.models import DbExtra
if self._to_be_stored:
raise ModificationNotAllowed(
"The extras of a node can be set and deleted "
"only after storing the node")
if not DbExtra.has_key(self.dbnode, key):
raise AttributeError("DbExtra {} does not exist".format(key))
return DbExtra.del_value_for_node(self.dbnode, key)
self._increment_version_number_db()