Django：堆叠装饰器

Question

我有以下信号。是否可以像我在这里那样“堆叠”这两个装饰器？

@receiver(signal=charge_succeeded)

@transaction.atomic

def create_influencer_transaction(sender, order, charge, **kwargs):

    pass

Answer 1

是的。考虑装饰器的工作方式，这相当于def create_influencer_transaction(sender, order, charge, **kwargs):    passcreate_influencer_transaction = transaction.atomic(    create_influencer_transaction)create_influencer_transaction = receiver(signal=charge_succeeded)(    create_influencer_transaction)–transaction.atomic将返回一个具有原子性包装逻辑的新函数，但receiver只会返回相同的函数。但是，这里的顺序确实很重要（而且您做对了）；如果装饰器是相反的，receiver则会注册非原子版本，这不好。