Method new_version

examples/versioned_rows/versioned_rows.py:23–30

(self, session)

class Versioned:
    def new_version(self, session):
        # make us transient (removes persistent
        # identity).
        make_transient(self)

        # set 'id' to None.
        # a new PK will be generated on INSERT.
        self.id = None


@event.listens_for(Session, "before_flush")