from django.db import models class Person(models.Model): first_name = models.CharField(max_length=100, unique=True) last_name = models.CharField(max_length=100) birthday = models.DateField() defaults = models.TextField() class DefaultPerson(models.Model): first_name = models.CharField(max_length=100, default="Anonymous") class ManualPrimaryKeyTest(models.Model): id = models.IntegerField(primary_key=True) data = models.CharField(max_length=100) class Profile(models.Model): person = models.ForeignKey(Person, models.CASCADE, primary_key=True) class Tag(models.Model): text = models.CharField(max_length=255, unique=True) class Thing(models.Model): name = models.CharField(max_length=255) tags = models.ManyToManyField(Tag) @property def capitalized_name_property(self): return self.name @capitalized_name_property.setter def capitalized_name_property(self, val): self.name = val.capitalize() @property def name_in_all_caps(self): return self.name.upper() class Publisher(models.Model): name = models.CharField(max_length=100) class Author(models.Model): name = models.CharField(max_length=100) class Book(models.Model): name = models.CharField(max_length=100) authors = models.ManyToManyField(Author, related_name="books") publisher = models.ForeignKey( Publisher, models.CASCADE, related_name="books", db_column="publisher_id_column", )