book = models.ForeignKey(Book)
user = models.ForeignKey(User)
complete = models.BooleanField(default=False)
+ last_changed = models.DateTimeField(auto_now=True)
- def get_state(self):
+ @property
+ def state(self):
return 'complete' if self.complete else 'reading'
- def set_state(self, state):
- self.complete = state == 'complete'
-
- state = property(get_state, set_state)
+ @classmethod
+ def update(cls, book, user, state):
+ instance, created = cls.objects.get_or_create(book=book, user=user)
+ instance.complete = state == 'complete'
+ instance.save()
+ return instance