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86 lines
2.5 KiB
Python
86 lines
2.5 KiB
Python
from django.db import models
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class Author(models.Model):
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name = models.CharField(max_length=100)
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age = models.IntegerField()
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friends = models.ManyToManyField('self', blank=True)
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def __str__(self):
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return self.name
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class Publisher(models.Model):
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name = models.CharField(max_length=255)
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num_awards = models.IntegerField()
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def __str__(self):
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return self.name
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class Book(models.Model):
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isbn = models.CharField(max_length=9)
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name = models.CharField(max_length=255)
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pages = models.IntegerField()
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rating = models.FloatField()
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price = models.DecimalField(decimal_places=2, max_digits=6)
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authors = models.ManyToManyField(Author)
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contact = models.ForeignKey(Author, models.CASCADE, related_name='book_contact_set')
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publisher = models.ForeignKey(Publisher, models.CASCADE)
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pubdate = models.DateField()
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def __str__(self):
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return self.name
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class Store(models.Model):
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name = models.CharField(max_length=255)
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books = models.ManyToManyField(Book)
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original_opening = models.DateTimeField()
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friday_night_closing = models.TimeField()
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def __str__(self):
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return self.name
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class DepartmentStore(Store):
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chain = models.CharField(max_length=255)
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def __str__(self):
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return '%s - %s ' % (self.chain, self.name)
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class Employee(models.Model):
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# The order of these fields matter, do not change. Certain backends
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# rely on field ordering to perform database conversions, and this
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# model helps to test that.
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first_name = models.CharField(max_length=20)
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manager = models.BooleanField(default=False)
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last_name = models.CharField(max_length=20)
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store = models.ForeignKey(Store, models.CASCADE)
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age = models.IntegerField()
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salary = models.DecimalField(max_digits=8, decimal_places=2)
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def __str__(self):
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return '%s %s' % (self.first_name, self.last_name)
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class Company(models.Model):
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name = models.CharField(max_length=200)
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motto = models.CharField(max_length=200, null=True, blank=True)
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ticker_name = models.CharField(max_length=10, null=True, blank=True)
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description = models.CharField(max_length=200, null=True, blank=True)
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def __str__(self):
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return 'Company(name=%s, motto=%s, ticker_name=%s, description=%s)' % (
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self.name, self.motto, self.ticker_name, self.description,
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)
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class Ticket(models.Model):
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active_at = models.DateTimeField()
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duration = models.DurationField()
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def __str__(self):
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return '{} - {}'.format(self.active_at, self.duration)
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