我有一个Apscheduler作业，它更新订阅模型中的active字段并将其设置为False。我创建了一个post_保存信号，该信号应该在订阅模型更新时触发，但它不起作用。以下是我的代码。
--job.py--

from django.conf import settings
from subscription.models import AccountSubscription
from django.utils import timezone

def schedule_api():
    try:
        data = {'is_active':False}
        AccountSubscription.objects.filter(expiry_date__lte=timezone.now(), is_active=True).update(**data)
    except Exception:
        pass

--信号。py--

@receiver(post_save, sender=AccountSubscription)
def post_save_user_subscription_expired(sender, instance, created, **kwargs):
    """Notifies users of subscription expiration."""
    try:
        if not created:
            if not instance.is_active:
                print("Notified users")
    except Exception as ex:
        print(ex)
        # context = {
        #     'status': 'error',
        #     'message': 'A subscription expiration notification error has occurred.'
        # }

        # raise exceptions.ParseError(context)

拜托，我是不是做错了什么？