-@register.filter
-@stringfilter
-def removewholetags(value, tags):
- """Removes a space separated list of [X]HTML tags from the output.
-
- FIXME: It makes the assumption the removed tags aren't nested.
-
- """
- tags = [re.escape(tag) for tag in tags.split()]
- tags_re = u'(%s)' % u'|'.join(tags)
- tag_re = re.compile(ur'<%s[^>]*>.*?</\s*\1\s*>' % tags_re, re.U)
- value = tag_re.sub(u'', value)
- return value
+@register.inclusion_tag('catalogue/related_books.html')
+def related_books(book, limit=6, random=1):
+ cache_key = "catalogue.related_books.%d.%d" % (book.id, limit - random)
+ related = cache.get(cache_key)
+ if related is None:
+ related = list(Book.objects.filter(
+ common_slug=book.common_slug).exclude(pk=book.pk)[:limit])
+ limit -= len(related)
+ if limit > random:
+ 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:
+ related += list(Book.objects.exclude(
+ pk__in=[b.pk for b in related] + [book.pk]
+ ).order_by('?')[:random])
+ return {
+ 'books': related,
+ }
+
+
+@register.inclusion_tag('catalogue/menu.html')
+def catalogue_menu():
+ tags = Tag.objects.filter(
+ category__in=('author', 'epoch', 'genre', 'kind', 'theme')
+ ).exclude(book_count=0)
+ return split_tags(tags)
+
+
+
+@register.simple_tag
+def tag_url(category, slug):
+ return reverse('catalogue.views.tagged_object_list', args=[
+ '/'.join((Tag.categories_dict[category], slug))
+ ])