How to store an object in django sessions framework

I have an django and i am trying to store an object in django session varaible, and trying to access that in the redirected view, but its showing `keyerror` as below def payment(request): if request.method == 'POST': form = CardForm(request.POST) if

Incrementing the slug by avoiding Integrity error in django models save method

I have a model with two fields as below **models.py** class Publisher(models.Model): name = models.CharField(max_length=200) slug = models.SlugField(max_length=150, unique=True) def save(self, *args, **kwargs): if not self.id and not self.slug: