On 7/17/15 2:32 PM, Jonathan Vanasco wrote:
editing the cascade isn't an option.
well then yeah you need to do your own thing :)
i'd use inspect(obj) to get the mapper. but also you might want to
use cascade_iterator:
http://docs.sqlalchemy.org/en/rel_1_0/orm/mapping_api.html?highlight=cascade_iterator#sqlalchemy.orm.mapper.Mapper.cascade_iterator
for now this seems to work, though it's ugly.
def recursive_expunge(obj, dbSession):
def _recursive_expunge(_obj):
if hasattr(_obj, '__mapper__'):
for rel in obj.__mapper__.relationships:
try:
dbSession.expunge(rel)
except sqlalchemy.orm.exc.UnmappedInstanceError:
pass
_recursive_expunge(obj)
recursive_expunge(postingObject, self.request.dbSession.writer)
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