есть модель
class Graphic(models.Model):
credit = models.ForeignKey(Credit, on_delete=models.CASCADE)
summ_cut = models.DecimalField(decimal_places=2, max_digits=10, verbose_name='Сумма погашения')
date = models.DateField(auto_now_add=True, verbose_name='Дата погашения')
user = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, verbose_name='Исполнитель')