def change_fan(self, user):
fan = Fan.get_unique(ref_type=self.__class__.__name__, ref_pk=self.id, user=user)
if fan is None:
fan = Fan.create_fan(ref_type=self.__class__.__name__, ref_pk=self.id, user=user)
fan.save()
self.popularity += 1
self.resto.popularity += 1
else:
fan.delete()
self.popularity = max(0, self.popularity - 1)
self.resto.popularity = max(0, self.resto.popularity - 1)
self.save()
self.resto.save()
def fans(self):
return Fan.find_fans(ref_type=self.__class__.__name__, ref_pk=self.id)