models.py 文件源码

def create_invoices(self, date):
        # monthly quotas
        start = make_aware(datetime.datetime(date.year, date.month, 1), utc)
        if date.month == 12:
            year = date.year + 1
            month = 1
        else:
            year = date.year
            month = date.month + 1
        end = make_aware(datetime.datetime(year, month, 1), utc)
        for quota in self.filter(quota_type__periodicity=QuotaType.MONTHLY):
            if not quota.quotainvoice_set.filter(date__range=(start, end)).exists():
                print "quota necesita invoice:", quota.create_invoice(date)

        # yearly quotas
        start = make_aware(datetime.datetime(date.year, 1, 1), utc)
        end = make_aware(datetime.datetime(date.year + 1, 1, 1), utc)

        quotainvoices = []
        for quota in self.filter(quota_type__periodicity=QuotaType.ANUAL):
            if not quota.quotainvoice_set.filter(date__range=(start, end)).exists():
                quotainvoice = quota.create_invoice(date)
                quotainvoices.append(quotainvoice)
        return quotainvoices