Django 在模型对象保存时刷新UUID
所以我有一个模型,我使用一个UUID字段。我只想在每次保存模型对象时将UUID(刷新UUID)更改为新的UUIDDjango 在模型对象保存时刷新UUID,django,django-models,uuid,Django,Django Models,Uuid,所以我有一个模型,我使用一个UUID字段。我只想在每次保存模型对象时将UUID(刷新UUID)更改为新的UUID import uuid from django.db import models class MyUUIDModel(models.Model): id = models.UUIDField(default=uuid.uuid4, unique=True) # other fields def save(self, *args, **kwargs)
import uuid
from django.db import models
class MyUUIDModel(models.Model):
id = models.UUIDField(default=uuid.uuid4, unique=True)
# other fields
def save(self, *args, **kwargs):
//refresh the uuid. what do i do here?
super(MyUUIDModel, self).save(*args, **kwargs)
您必须调用uuid.uuid4(),否则您将试图将函数本身作为字段的值传递给模型。但您可以在每次保存实例时生成一个新的UUID,如下所示:
class MyUUIDModel(models.Model):
id = models.UUIDField(default=uuid.uuid4(), unique=True, primary_key=True)
def save(self, *args, **kwargs):
self.id = uuid.uuid4()
super(MyUUIDModel, self).save(*args, **kwargs)