| from django.db import models |
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| class Author(models.Model): |
| name = models.CharField(max_length=100) |
| age = models.IntegerField() |
| friends = models.ManyToManyField("self", blank=True) |
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| class Publisher(models.Model): |
| name = models.CharField(max_length=255) |
| num_awards = models.IntegerField() |
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| class Book(models.Model): |
| isbn = models.CharField(max_length=9) |
| name = models.CharField(max_length=255) |
| pages = models.IntegerField() |
| rating = models.FloatField() |
| price = models.DecimalField(decimal_places=2, max_digits=6) |
| authors = models.ManyToManyField(Author) |
| contact = models.ForeignKey(Author, models.CASCADE, related_name="book_contact_set") |
| publisher = models.ForeignKey(Publisher, models.CASCADE) |
| pubdate = models.DateField() |
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| class Store(models.Model): |
| name = models.CharField(max_length=255) |
| books = models.ManyToManyField(Book) |
| original_opening = models.DateTimeField() |
| friday_night_closing = models.TimeField() |
| area = models.IntegerField(null=True, db_column="surface") |
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| class DepartmentStore(Store): |
| chain = models.CharField(max_length=255) |
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| class Employee(models.Model): |
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| first_name = models.CharField(max_length=20) |
| manager = models.BooleanField(default=False) |
| last_name = models.CharField(max_length=20) |
| store = models.ForeignKey(Store, models.CASCADE) |
| age = models.IntegerField() |
| salary = models.DecimalField(max_digits=8, decimal_places=2) |
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| class Company(models.Model): |
| name = models.CharField(max_length=200) |
| motto = models.CharField(max_length=200, null=True, blank=True) |
| ticker_name = models.CharField(max_length=10, null=True, blank=True) |
| description = models.CharField(max_length=200, null=True, blank=True) |
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| class Ticket(models.Model): |
| active_at = models.DateTimeField() |
| duration = models.DurationField() |
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