How to simplify signal code in Django?

Question

Django

Before each save of a certain list of models, I need to do some calculations.

@receiver(pre_save, sender=Model6)
@receiver(pre_save, sender=Model5)
@receiver(pre_save, sender=Model4)
@receiver(pre_save, sender=Model3)
@receiver(pre_save, sender=Model2)
@receiver(pre_save, sender=Model1)
def recalculate_data(instance, **kwargs):
    ...

In principle, everything suits me, but I would like to get rid of so many decorators, but the thought of how to do this does not occur to me. There is only an assumption that the recevier also needs to be decorated.

Answer 1

Write a decorator that accepts a list of models and internally wraps a @receiver function for each of them.
More or less like this.

def my_receiver(models):

    def decorator(func):
        for model in models:
            func = receiver(pre_save, sender=model)(func)
        return func

    return decorator

@my_receiver(models=[Model1, Model2, Model3])
def recalculate_data(instance, **kwargs):
    pass