from django.db import models from users.models import User class Machine(models.Model): user = models.ForeignKey('users.User', on_delete=models.PROTECT) type = models.ForeignKey('MachineType', on_delete=models.PROTECT) def __str__(self): return self.type class MachineType(models.Model): type = models.CharField(max_length=255) def __str__(self): return self.type