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from django.db import models
class User(models.Model):
username = models.CharField(max_length=100)
email = models.EmailField()
class UserProfile(models.Model):
user = models.OneToOneField(User, models.CASCADE)
city = models.CharField(max_length=100)
state = models.CharField(max_length=2)
class UserStatResult(models.Model):
results = models.CharField(max_length=50)
class UserStat(models.Model):
user = models.OneToOneField(User, models.CASCADE, primary_key=True)
posts = models.IntegerField()
results = models.ForeignKey(UserStatResult, models.CASCADE)
class StatDetails(models.Model):
base_stats = models.OneToOneField(UserStat, models.CASCADE)
comments = models.IntegerField()
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)
class Parent1(models.Model):
name1 = models.CharField(max_length=50)
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)
class Child1(Parent1, Parent2):
value = models.IntegerField()
class Child2(Parent1):
parent2 = models.OneToOneField(Parent2, models.CASCADE)
value = models.IntegerField()
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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