from django.db import models class Location(models.Model): name = models.CharField(max_length=30, unique=True) def __str__(self): return self.name def __unicode__(self): return self.name class Client(models.Model): id = models.UUIDField(primary_key=True, editable=False) location = models.ForeignKey(Location) def __str__(self): return self.name def __unicode__(self): return self.name class Table(models.Model): client = models.ForeignKey(Client) number = models.IntegerField() name = models.CharField(max_length=30) def __str__(self): return self.name def __unicode__(self): return self.name