我可以在Django中使用IntegerField生成连续的数字吗？

from django.db import models

class MyModel(models.Model):
    id = models.AutoField(primary_key=True)
    # 其他字段...

from django.db.models.signals import pre_save
from django.dispatch import receiver

@receiver(pre_save, sender=MyModel)
def set_integer_field_value(sender, instance, **kwargs):
    if not instance.integer_field:
        # 获取最大的整数值
        max_value = MyModel.objects.aggregate(models.Max('integer_field'))['integer_field__max']
        if max_value is not None:
            # 设置下一个连续的数字
            instance.integer_field = max_value + 1
        else:
            # 如果没有记录，则设置为初始值
            instance.integer_field = 1

class MyModel(models.Model):
    integer_field = models.IntegerField(blank=True, null=True)
    # 其他字段...

pre_save.connect(set_integer_field_value, sender=MyModel)