from django.db import models from django.contrib.auth.views import get_user_model User = get_user_model() class Invoice(models.Model): user = models.ForeignKey(User, on_delete=models.CASCADE) total = models.FloatField(null=True, blank=True) amount = models.FloatField(null=True, blank=True) payment_complete = models.BooleanField(default=False) invoice_code = models.CharField(max_length=200, blank=True, null=True)