+
+@register.inclusion_tag('catalogue/fragment_promo.html')
+def fragment_promo(arg=None):
+ if arg is None:
+ fragments = Fragment.objects.all().order_by('?')
+ fragment = fragments[0] if fragments.exists() else None
+ elif isinstance(arg, Book):
+ fragment = arg.choose_fragment()
+ else:
+ fragments = Fragment.tagged.with_all(arg).order_by('?')
+ fragment = fragments[0] if fragments.exists() else None
+
+ return {
+ 'fragment': fragment,
+ }
+
+
+@register.inclusion_tag('catalogue/related_books.html')
+def related_books(book, limit=6, random=1, taken=0):
+ limit = limit - taken
+ cache_key = "catalogue.related_books.%d.%d" % (book.id, limit - random)
+ related = cache.get(cache_key)
+ if related is None:
+ related = Book.tagged.related_to(book,
+ Book.objects.exclude(common_slug=book.common_slug),
+ ignore_by_tag=book.book_tag())[:limit-random]
+ cache.set(cache_key, related, 1800)
+ if random:
+ random_books = Book.objects.exclude(
+ pk__in=[b.pk for b in related] + [book.pk])
+ if random == 1:
+ count = random_books.count()
+ if count:
+ related.append(random_books[randint(0, count - 1)])
+ else:
+ related += list(random_books.order_by('?')[:random])
+ return {
+ 'books': related,
+ }
+
+
+@register.inclusion_tag('catalogue/menu.html')
+def catalogue_menu():
+ return {'categories': [
+ ('author', _('Authors'), 'autorzy'),
+ ('genre', _('Genres'), 'gatunki'),
+ ('kind', _('Kinds'), 'rodzaje'),
+ ('epoch', _('Epochs'), 'epoki'),
+ ('theme', _('Themes'), 'motywy'),
+ ]}
+
+
+@register.simple_tag
+def tag_url(category, slug):
+ return Tag.create_url(category, slug)
+
+
+@register.simple_tag
+def download_audio(book, daisy=True):
+ related = book.related_info()
+ links = []
+ if related['media'].get('mp3'):
+ links.append("<a href='%s'>%s</a>" %
+ (reverse('download_zip_mp3', args=[book.slug]),
+ BookMedia.formats['mp3'].name))
+ if related['media'].get('ogg'):
+ links.append("<a href='%s'>%s</a>" %
+ (reverse('download_zip_ogg', args=[book.slug]),
+ BookMedia.formats['ogg'].name))
+ if daisy and related['media'].get('daisy'):
+ for dsy in book.get_media('daisy'):
+ links.append("<a href='%s'>%s</a>" %
+ (dsy.file.url, BookMedia.formats['daisy'].name))
+ return ", ".join(links)
+
+
+@register.inclusion_tag("catalogue/snippets/custom_pdf_link_li.html")
+def custom_pdf_link_li(book):
+ return {
+ 'book': book,
+ 'NO_CUSTOM_PDF': settings.NO_CUSTOM_PDF,
+ }
+
+
+@register.inclusion_tag("catalogue/snippets/license_icon.html")
+def license_icon(license_url):
+ """Creates a license icon, if the license_url is known."""
+ known = LICENSES.get(license_url)
+ if known is None:
+ return {}
+ return {
+ "license_url": license_url,
+ "icon": "img/licenses/%s.png" % known['icon'],
+ "license_description": known['description'],
+ }
+
+
+@register.simple_tag
+def related_tag_name(tag, lang=None):
+ return _related_tag_name(tag, lang)
+
+
+@register.simple_tag
+def class_name(obj):
+ return obj.__class__.__name__
+