gistfile1.py

def save(self, *args, **kwargs):
        if not self.slug:
            self.slug = slugify(self.name)
        if not self.slug_unique:
            self.slug_unique = unique_slug(self.slug)
        try:
            if not self.added_by:
                self.added_by_id = 9
        except Member.DoesNotExist:
            pass
        super(Person, self).save(*args, **kwargs)