um-cseg / chez-betty

                    .filter(cls.type==trans_type)\

                    .filter(event.Event.deleted==False)

        if start:

            q = q.filter(event.Event.timestamp>=start)

        if end:

            q = q.filter(event.Event.timestamp<end)

        q = q.order_by(desc(event.Event.timestamp))

        return q

    @classmethod

    @datefilter_one_or_zero(label=None)

    def get_balance(cls, trans_type, account_obj):

        r = DBSession.query(coalesce(func.sum(cls.amount), 0).label("balance"))\

                     .join(event.Event)\

                     .filter(or_(cls.fr_account_cash_id==account_obj.id,

                                 cls.to_account_cash_id==account_obj.id,

                                 cls.fr_account_virt_id==account_obj.id,

    @classmethod

    @datefilter_one_or_zero(label='a')

    def total(cls):

        r = DBSession.query(func.sum(cls.amount).label('a'))\

                        .join(event.Event)\

                        .filter(event.Event.deleted==False)

        return r

    # Get the total amount of discounts people have received for keeping

    # money in their account

    @classmethod

    def discounts(cls, start=None, end=None):

        r = DBSession.query(func.sum((cls.amount / (1-cls.discount)) - cls.amount).label('d'))\

                        .join(event.Event)\

                        .filter(cls.discount > 0)\

                        .filter(event.Event.deleted==False)

        if start:

            r = r.filter(event.Event.timestamp>=start)

        r = DBSession.query(cls).join(event.Event)\

                .filter(event.Event.deleted==False)

        if start:

            r = r.filter(event.Event.timestamp>=start)

        if end:

            r = r.filter(event.Event.timestamp<end)

        if distinct_on is None:

            raise NotImplementedError("required argument distinct_on missing")

        r = r.distinct(distinct_on)

        return r.count()

    @classmethod

    @datefilter_one_or_zero(label='a')

    def total(cls):

        r = DBSession.query(func.sum(cls.amount).label('a'))\