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如何在 discount.is_active() 的位置获得按 discount__value 排序的所有服务?

模型.py

class Service(models.Model):
    name = models.CharField(max_length=50)
    length = models.IntegerField()
    description = models.CharField(max_length=150, null=True, blank=True)
    long_description = models.TextField(null=True, blank=True)
    price = models.DecimalField(max_digits=5, decimal_places=2, null=True, blank=True)
    provider = models.ForeignKey(settings.AUTH_USER_MODEL)
    categories = models.ManyToManyField(Category)
    active_from = models.DateField(null=True, blank=True)
    active_to = models.DateField(null=True, blank=True)
    rating = models.FloatField(null=True, blank=True)
    review_number = models.IntegerField(null=True, blank=True)
    discount = models.ManyToManyField(Discounts, null=True, blank=True)

class Discounts(models.Model):
    value = models.IntegerField(blank=True, default=0)
    active_from = models.DateField(null=True, blank=True)
    active_to = models.DateField(null=True, blank=True)

    def is_active(self):
        return (self.active_from is None or self.active_from <= date.today()) and \
               (self.active_to is None or self.active_to >= date.today())

在我看来我有

filtered_services = Service.objects.filter(not important)
services = filtered_services.annotate(highest_discount=Max('discount__value')).order_by('-highest_discount')

因此,在服务中,我按所有折扣(与每项服务相关)的最大折扣订购了所有服务,但我希望所有服务按 discount__value 订购,其中 discount.is_active()?

那么如何在 discount.is_active() 的位置获得按 discount__value 排序的所有服务?

任何帮助将非常感激 :)

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