def private_discussions_with(self, member):
return db.session.query(PrivateDiscussion).filter(db.or_(
db.and_(PrivateDiscussion.member1 == self, PrivateDiscussion.member2 == member),
db.and_(PrivateDiscussion.member1 == member, PrivateDiscussion.member2 == self))
).order_by(PrivateDiscussion.last_bumped.desc())
