1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
4 from django.conf import settings
5 from django.db import models
6 from django.urls import reverse
7 from django.utils.translation import ugettext_lazy as _
9 from wolnelektury.utils import cached_render, clear_cached_renders
12 class Collection(models.Model):
13 """A collection of books, which might be defined before publishing them."""
14 title = models.CharField(_('title'), max_length=120, db_index=True)
15 slug = models.SlugField(_('slug'), max_length=120, primary_key=True)
16 description = models.TextField(_('description'), null=True, blank=True)
17 book_slugs = models.TextField(_('book slugs'))
18 kind = models.CharField(_('kind'), max_length=10, blank=False, default='book', db_index=True,
19 choices=(('book', _('book')), ('picture', _('picture'))))
20 role = models.CharField(max_length=128, blank=True, db_index=True, choices=[
22 ('recommend', _('recommended')),
27 verbose_name = _('collection')
28 verbose_name_plural = _('collections')
29 app_label = 'catalogue'
34 def get_initial(self):
36 return re.search(r'\w', self.title, re.U).group(0)
37 except AttributeError:
40 def get_absolute_url(self):
41 return reverse("collection", args=[self.slug])
44 slugs = self.book_slugs.split()
46 slugs = [slug.rstrip('/').rsplit('/', 1)[-1] if '/' in slug else slug for slug in slugs]
47 return models.Q(slug__in=slugs)
50 from catalogue.models import Book
51 return Book.objects.filter(self.get_query())
53 @cached_render('catalogue/collection_box.html')
59 def clear_cache(self):
60 clear_cached_renders(self.box)