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"""
Regression tests for a few ForeignKey bugs.
"""
from __future__ import unicode_literals
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
# If ticket #1578 ever slips back in, these models will not be able to be
# created (the field names being lower-cased versions of their opposite
# classes is important here).
class First(models.Model):
second = models.IntegerField()
class Second(models.Model):
first = models.ForeignKey(First, related_name='the_first')
# Protect against repetition of #1839, #2415 and #2536.
class Third(models.Model):
name = models.CharField(max_length=20)
third = models.ForeignKey('self', null=True, related_name='child_set')
class Parent(models.Model):
name = models.CharField(max_length=20)
bestchild = models.ForeignKey('Child', null=True, related_name='favored_by')
class Child(models.Model):
name = models.CharField(max_length=20)
parent = models.ForeignKey(Parent)
# Multiple paths to the same model (#7110, #7125)
@python_2_unicode_compatible
class Category(models.Model):
name = models.CharField(max_length=20)
def __str__(self):
return self.name
class Record(models.Model):
category = models.ForeignKey(Category)
@python_2_unicode_compatible
class Relation(models.Model):
left = models.ForeignKey(Record, related_name='left_set')
right = models.ForeignKey(Record, related_name='right_set')
def __str__(self):
return "%s - %s" % (self.left.category.name, self.right.category.name)
class Car(models.Model):
make = models.CharField(max_length=100, null=True, unique=True)
class Driver(models.Model):
car = models.ForeignKey(Car, to_field='make', null=True, related_name='drivers')
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