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 gettext_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 authors = models.ManyToManyField(
20 limit_choices_to={'category': 'author'}
22 kind = models.CharField(_('kind'), max_length=10, blank=False, default='book', db_index=True,
23 choices=(('book', _('book')), ('picture', _('picture'))))
24 listed = models.BooleanField(_('listed'), default=True, db_index=True)
25 role = models.CharField(max_length=128, blank=True, db_index=True, choices=[
27 ('recommend', _('recommended')),
32 verbose_name = _('collection')
33 verbose_name_plural = _('collections')
34 app_label = 'catalogue'
39 def get_initial(self):
41 return re.search(r'\w', self.title, re.U).group(0)
42 except AttributeError:
45 def get_absolute_url(self):
46 return reverse("collection", args=[self.slug])
49 slugs = self.book_slugs.split()
51 slugs = [slug.rstrip('/').rsplit('/', 1)[-1] if '/' in slug else slug for slug in slugs]
52 return models.Q(slug__in=slugs)
55 from catalogue.models import Book
56 return Book.objects.filter(self.get_query())
58 @cached_render('catalogue/collection_box.html')
64 def clear_cache(self):
65 clear_cached_renders(self.box)