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from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class User(models.Model):
username = models.CharField(max_length=100)
email = models.EmailField()
def __str__(self):
return self.username
@python_2_unicode_compatible
class UserProfile(models.Model):
user = models.OneToOneField(User, models.CASCADE)
city = models.CharField(max_length=100)
state = models.CharField(max_length=2)
def __str__(self):
return "%s, %s" % (self.city, self.state)
@python_2_unicode_compatible
class UserStatResult(models.Model):
results = models.CharField(max_length=50)
def __str__(self):
return 'UserStatResults, results = %s' % (self.results,)
@python_2_unicode_compatible
class UserStat(models.Model):
user = models.OneToOneField(User, models.CASCADE, primary_key=True)
posts = models.IntegerField()
results = models.ForeignKey(UserStatResult, models.CASCADE)
def __str__(self):
return 'UserStat, posts = %s' % (self.posts,)
@python_2_unicode_compatible
class StatDetails(models.Model):
base_stats = models.OneToOneField(UserStat, models.CASCADE)
comments = models.IntegerField()
def __str__(self):
return 'StatDetails, comments = %s' % (self.comments,)
class AdvancedUserStat(UserStat):
karma = models.IntegerField()
class Image(models.Model):
name = models.CharField(max_length=100)
class Product(models.Model):
name = models.CharField(max_length=100)
image = models.OneToOneField(Image, models.SET_NULL, null=True)
@python_2_unicode_compatible
class Parent1(models.Model):
name1 = models.CharField(max_length=50)
def __str__(self):
return self.name1
@python_2_unicode_compatible
class Parent2(models.Model):
# Avoid having two "id" fields in the Child1 subclass
id2 = models.AutoField(primary_key=True)
name2 = models.CharField(max_length=50)
def __str__(self):
return self.name2
@python_2_unicode_compatible
class Child1(Parent1, Parent2):
value = models.IntegerField()
def __str__(self):
return self.name1
@python_2_unicode_compatible
class Child2(Parent1):
parent2 = models.OneToOneField(Parent2, models.CASCADE)
value = models.IntegerField()
def __str__(self):
return self.name1
class Child3(Child2):
value3 = models.IntegerField()
class Child4(Child1):
value4 = models.IntegerField()
class LinkedList(models.Model):
name = models.CharField(max_length=50)
previous_item = models.OneToOneField(
'self', models.CASCADE,
related_name='next_item',
blank=True, null=True,
)
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