如何在Django中创建自定义AutoField primary_key条目

from django.db import models

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

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

    class Meta:
        auto_created = True

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

    def save(self, *args, **kwargs):
        if not self.my_primary_key:
            # 为自定义AutoField字段赋值
            self.my_primary_key = generate_custom_primary_key()
        super().save(*args, **kwargs)