def node_cascade_delete(mapper, connection, target):
node_id = target.id
for fact in Facts.query.filter_by(node_id=node_id):
session.delete(fact)
for attr in Attrs.query.filter_by(node_id=node_id):
session.delete(attr)
def delete(self, id):
id = int(id)
r = self.model.query.filter_by(id=id).first()
# We need generate an object hash to pass to the backend notification
try:
session.delete(r)
session.commit()
return True
except sqlalchemy.orm.exc.UnmappedInstanceError as e:
session.rollback()
msg = "%s id does not exist" % (self.name.title())
raise exceptions.IdNotFound(message=msg)
except sqlalchemy.exc.InvalidRequestError as e:
session.rollback()
msg = e.msg
raise RuntimeError(msg)
