Synnefo

class QuotaHolderSerial(models.Model):

    serial = models.BigIntegerField(null=False, primary_key=True, db_index=True)

    pending = models.BooleanField(default=True, db_index=True)

    accepted = models.BooleanField(default=False)

    rejected = models.BooleanField(default=False)

    class Meta:

        verbose_name = u'Quota Serial'

        ordering = ["serial"]

    def save(self, *args, **kwargs):

        self.pending = not (self.accepted or self.rejected)

        super(QuotaHolderSerial, self).save(*args, **kwargs)