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"""
Regression tests for proper working of ForeignKey(null=True).
"""
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
class SystemDetails(models.Model):
details = models.TextField()
class SystemInfo(models.Model):
system_details = models.ForeignKey(SystemDetails)
system_name = models.CharField(max_length=32)
class Forum(models.Model):
system_info = models.ForeignKey(SystemInfo)
forum_name = models.CharField(max_length=32)
@python_2_unicode_compatible
class Post(models.Model):
forum = models.ForeignKey(Forum, null=True)
title = models.CharField(max_length=32)
def __str__(self):
return self.title
@python_2_unicode_compatible
class Comment(models.Model):
post = models.ForeignKey(Post, null=True)
comment_text = models.CharField(max_length=250)
class Meta:
ordering = ('comment_text',)
def __str__(self):
return self.comment_text
# Ticket 15823
class Item(models.Model):
title = models.CharField(max_length=100)
class PropertyValue(models.Model):
label = models.CharField(max_length=100)
class Property(models.Model):
item = models.ForeignKey(Item, related_name='props')
key = models.CharField(max_length=100)
value = models.ForeignKey(PropertyValue, null=True)
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