def get_extra(self, key, *args):
from aiida.backends.djsite.db.models import DbExtra
if len(args) > 1:
raise ValueError("After the key name you can pass at most one"
"value, that is the default value to be used "
"if no extra is found.")
try:
if self._to_be_stored:
raise AttributeError("DbExtra '{}' does not exist yet, the "
"node is not stored".format(key))
else:
return DbExtra.get_value_for_node(dbnode=self.dbnode, key=key)
except AttributeError as e:
try:
return args[0]
except IndexError:
raise e
def _get_db_extra(self, key, *args):
from aiida.backends.djsite.db.models import DbExtra
return DbExtra.get_value_for_node(dbnode=self.dbnode, key=key)