Django模型中的默认过滤器

Question

可以在Django模型中设置默认过滤器吗？

就像是:

class MyModel(models.Model):
    timestamp = models.DateTimeField(default=datetime.utcnow)
    active = models.BooleanField(default=True)

    class Meta:
        ordering = ['-timestamp']
        filtering = [active=True]

Answer 1

你必须覆盖经理:

class MyModelManager(models.Manager):
    def get_queryset(self):
        return super(MyModelManager, self).get_queryset().filter(active=True)

class MyModel(models.Model):
    timestamp = models.DateTimeField(default=datetime.utcnow)
    active = models.BooleanField(default=True)

    objects = MyModelManager()

    class Meta:
        ordering = ['-timestamp']

get_queryset是get_query_set的Django 1.6之前