mirror of
https://github.com/django/django.git
synced 2024-11-18 23:44:22 +00:00
20 lines
437 B
Python
20 lines
437 B
Python
from django.db import models
|
|
|
|
|
|
class ParentManager(models.Manager):
|
|
def get_by_natural_key(self, parent_data):
|
|
return self.get(parent_data=parent_data)
|
|
|
|
|
|
class Parent(models.Model):
|
|
parent_data = models.CharField(max_length=30, unique=True)
|
|
|
|
objects = ParentManager()
|
|
|
|
def natural_key(self):
|
|
return (self.parent_data, )
|
|
|
|
|
|
class Child(Parent):
|
|
child_data = models.CharField(max_length=30, unique=True)
|