django/tests/foreign_object/models/customers.py

42 lines
1.0 KiB
Python

from django.db import models
class Address(models.Model):
company = models.CharField(max_length=1)
customer_id = models.IntegerField()
class Meta:
unique_together = [
("company", "customer_id"),
]
class Customer(models.Model):
company = models.CharField(max_length=1)
customer_id = models.IntegerField()
address = models.ForeignObject(
Address,
models.CASCADE,
null=True,
# order mismatches the Contact ForeignObject.
from_fields=["company", "customer_id"],
to_fields=["company", "customer_id"],
)
class Meta:
unique_together = [
("company", "customer_id"),
]
class Contact(models.Model):
company_code = models.CharField(max_length=1)
customer_code = models.IntegerField()
customer = models.ForeignObject(
Customer,
models.CASCADE,
related_name="contacts",
to_fields=["customer_id", "company"],
from_fields=["customer_code", "company_code"],
)