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from django.core.urlresolvers import reverse
from django.db import models
from django.db.models import QuerySet
from django.db.models.manager import BaseManager
from django.utils.encoding import python_2_unicode_compatible
@python_2_unicode_compatible
class Artist(models.Model):
name = models.CharField(max_length=100)
class Meta:
ordering = ['name']
verbose_name = 'professional artist'
verbose_name_plural = 'professional artists'
def __str__(self):
return self.name
def get_absolute_url(self):
return reverse('artist_detail', kwargs={'pk': self.id})
@python_2_unicode_compatible
class Author(models.Model):
name = models.CharField(max_length=100)
slug = models.SlugField()
class Meta:
ordering = ['name']
def __str__(self):
return self.name
class DoesNotExistQuerySet(QuerySet):
def get(self, *args, **kwargs):
raise Author.DoesNotExist
DoesNotExistBookManager = BaseManager.from_queryset(DoesNotExistQuerySet)
@python_2_unicode_compatible
class Book(models.Model):
name = models.CharField(max_length=300)
slug = models.SlugField()
pages = models.IntegerField()
authors = models.ManyToManyField(Author)
pubdate = models.DateField()
objects = models.Manager()
does_not_exist = DoesNotExistBookManager()
class Meta:
ordering = ['-pubdate']
def __str__(self):
return self.name
class Page(models.Model):
content = models.TextField()
template = models.CharField(max_length=300)
class BookSigning(models.Model):
event_date = models.DateTimeField()
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