Class Child

examples/versioned_rows/versioned_update_old_row.py:145–161

class Child(VersionedStartEnd, Base):
    __tablename__ = "child"

    id = Column(Integer, primary_key=True)
    start = Column(DateTime, primary_key=True)
    end = Column(DateTime, primary_key=True)
    data = Column(String)

    def new_version(self, session):
        # expire parent's reference to us
        session.expire(self.parent, ["child"])

        # create new version
        VersionedStartEnd.new_version(self, session)

        # re-add ourselves to the parent
        self.parent.child = self


times = []