django orm如何确保postgres数组字段不是空列表？

from django.contrib.postgres.fields import ArrayField
from django.db import models

class MyModel(models.Model):
    my_array = ArrayField(models.IntegerField(), null=False)

from django.contrib.postgres.fields import ArrayField
from django.db import models

class MyModel(models.Model):
    my_array = ArrayField(models.IntegerField())

    def save(self, *args, **kwargs):
        if len(self.my_array) == 0:
            # 如果数组字段为空列表，则将其设置为默认值或者进行其他处理
            self.my_array = [default_value]
        super().save(*args, **kwargs)

from django.contrib.postgres.fields import ArrayField
from django.db import models
from django.db.models.signals import pre_save
from django.dispatch import receiver

class MyModel(models.Model):
    my_array = ArrayField(models.IntegerField())

@receiver(pre_save, sender=MyModel)
def ensure_array_not_empty(sender, instance, **kwargs):
    if len(instance.my_array) == 0:
        # 如果数组字段为空列表，则将其设置为默认值或者进行其他处理
        instance.my_array = [default_value]