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# coding: utf-8
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Author(models.Model):
name = models.CharField(max_length=100)
age = models.IntegerField()
friends = models.ManyToManyField('self', blank=True)
def __str__(self):
return self.name
@python_2_unicode_compatible
class Publisher(models.Model):
name = models.CharField(max_length=255)
num_awards = models.IntegerField()
def __str__(self):
return self.name
@python_2_unicode_compatible
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()
def __str__(self):
return self.name
@python_2_unicode_compatible
class Store(models.Model):
name = models.CharField(max_length=255)
books = models.ManyToManyField(Book)
original_opening = models.DateTimeField()
friday_night_closing = models.TimeField()
def __str__(self):
return self.name
@python_2_unicode_compatible
class DepartmentStore(Store):
chain = models.CharField(max_length=255)
def __str__(self):
return '%s - %s ' % (self.chain, self.name)
@python_2_unicode_compatible
class Employee(models.Model):
# The order of these fields matter, do not change. Certain backends
# rely on field ordering to perform database conversions, and this
# model helps to test that.
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)
def __str__(self):
return '%s %s' % (self.first_name, self.last_name)
@python_2_unicode_compatible
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)
def __str__(self):
return ('Company(name=%s, motto=%s, ticker_name=%s, description=%s)'
% (self.name, self.motto, self.ticker_name, self.description)
)
@python_2_unicode_compatible
class Ticket(models.Model):
active_at = models.DateTimeField()
duration = models.DurationField()
def __str__(self):
return '{} - {}'.format(self.active_at, self.duration)
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