def add_key_to_CartObj(sender, instance, *args, **kwargs):
if not instance.key:
instance.key = unique_key_generator(instance, size=12)
def add_key_to_DiscountObj(sender, instance, *args, **kwargs):
if not instance.key:
instance.key = unique_key_generator(instance, size=randint(6, 10))
def food_pre_save_receiver(sender, instance, *args, **kwargs):
if not instance.key:
instance.key = unique_key_generator(instance)
if not instance.slug:
instance.slug = unique_slug_generator(instance)