Populating django field with pre_save()?

Question

class TodoList(models.Model):
    title = models.CharField(maxlength=100)
    slug = models.SlugField(maxlength=100)
    def save(self):
        self.slug = title
           


        

Answer 1

Receiver functions must be like this:

def my_callback(sender, **kwargs):
    print("Request finished!")

Notice that the function takes a sender argument, along with wildcard keyword arguments (**kwargs); all signal handlers must take these arguments.

All signals send keyword arguments, and may change those keyword arguments at any time.

Reference here.