如何解决在 m2m_changed 信号中迭代对象
我有以下设置: 订单/models.py
class Order(models.Model):
order_deliverer = models.ManyToManyField(Deliverer,related_name='deliverer')
deliveringstatus = models.BooleanField(default=False)
order/signals.py
@receiver(m2m_changed,sender=Order.deliverer.through)
def m2m_changed_order_deliverer(sender,instance,**kwargs):
if kwargs['action'] == 'post_add':
instance.deliveringstatus = True
instance.save()
#changes the order model's,on-delivery status to TRUE once an order_deliverer has been appended onto its ManyToManyField.
帐户/模型.py
class Deliverer(models.Model):
user = models.OneToOneField(User,on_delete=models.CASCADE,primary_key=True,related_name='deliverer')
busy = models.BooleanField(default=False)
@receiver(m2m_changed,sender=Order.order_deliverer.through)
def m2m_changed_deliverer_profile(sender,**kwargs):
if kwargs['action'] == 'post_add':
#print(instance.order_deliverer.through.objects.all())
obj = instance.order_deliverer.through.objects.last().deliverer
obj.busy = True
obj.save()
#alters the deliverer's profile status to busy.
1.我的问题是处理迭代。如果订单的 order_deliverer 字段有多个用户对象,则帐户信号仅在最后一个对象上处理。
2.我如何迭代和更改每个交付者的个人资料。
我正在考虑通过“for”循环,但我首先需要能够获取单个用户对象,而不是第一个或最后一个。
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