"适用外键的动态“属性”计数"

Question

我的应用程序中目前有以下三个模型：

模型.py<\/strong>

class Guest(models.Model):
    
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=100)

class Event(models.Model):
    
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = models.CharField(max_length=100)

class Invite(models.Model):

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)

    event = models.ForeignKey(Event, on_delete=models.CASCADE)
    guest = models.ForeignKey(Guest, on_delete=models.CASCADE)