On Dec 6, 4:49 pm, Ian Thompson <quorn...@gmail.com> wrote: > I've generated a test data set and then want to have all of the > created objects and relationships available for reference easily. > To avoid possible pollution of this fixture I want to detach the > objects from the sessions to avoid them getting any updates applied. > > To do this I am attempting to load all data via joinedload and then > calling session.expunge_all: > > print assets['test_asset_1'].attributes # OK > > session.query(Asset).options(joinedload(Asset.asset_attributes)).populate_e > xisting().all() > session.expunge_all() > print assets['test_asset_1'].attributes # ERROR > > None of the relationships on the objects survive the expunge. > > sqlalchemy.orm.exc.DetachedInstanceError: > Parent instance <Asset at ...> is not bound to a Session; > lazy load operation of attribute 'asset_attributes' cannot proceed (cont...) Is there a correct way to detach all current data from the Session fully loading any relationships? (Small data set so memory is not a concern.)
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