Mariusz Felisiak 6cf3b6f5cf [2.2.x] Fixed #30953 -- Made select_for_update() lock queryset's model when using "self" with multi-table inheritance.
Thanks Abhijeet Viswa for the report and initial patch.
Backport of 0107e3d1058f653f66032f7fd3a0bd61e96bf782 from master
2019-12-02 07:58:44 +01:00

30 lines
756 B
Python

from django.db import models
class Country(models.Model):
name = models.CharField(max_length=30)
class EUCountry(Country):
join_date = models.DateField()
class City(models.Model):
name = models.CharField(max_length=30)
country = models.ForeignKey(Country, models.CASCADE)
class EUCity(models.Model):
name = models.CharField(max_length=30)
country = models.ForeignKey(EUCountry, models.CASCADE)
class Person(models.Model):
name = models.CharField(max_length=30)
born = models.ForeignKey(City, models.CASCADE, related_name='+')
died = models.ForeignKey(City, models.CASCADE, related_name='+')
class PersonProfile(models.Model):
person = models.OneToOneField(Person, models.CASCADE, related_name='profile')