47706240c6f34029679d8dd3289dd420422d4ea3
[wolnelektury.git] / src / catalogue / views.py
1 # -*- coding: utf-8 -*-
2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
4 #
5 from collections import OrderedDict
6 import re
7 import random
8
9 from django.conf import settings
10 from django.template import RequestContext
11 from django.template.loader import render_to_string
12 from django.shortcuts import render_to_response, get_object_or_404, render, redirect
13 from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect, JsonResponse
14 from django.core.urlresolvers import reverse
15 from django.db.models import Q
16 from django.contrib.auth.decorators import login_required, user_passes_test
17 from django.utils.http import urlquote_plus
18 from django.utils import translation
19 from django.utils.translation import ugettext as _, ugettext_lazy
20
21 from ajaxable.utils import AjaxableFormView
22 from pdcounter.models import BookStub, Author
23 from pdcounter import views as pdcounter_views
24 from picture.models import Picture, PictureArea
25 from ssify import ssi_included, ssi_expect, SsiVariable as Var
26 from suggest.forms import PublishingSuggestForm
27 from catalogue import constants
28 from catalogue import forms
29 from catalogue.helpers import get_top_level_related_tags
30 from catalogue.models import Book, Collection, Tag, Fragment
31 from catalogue.utils import split_tags
32
33 staff_required = user_passes_test(lambda user: user.is_staff)
34
35
36 def catalogue(request):
37     return render(request, 'catalogue/catalogue.html', {
38         'books': Book.objects.filter(parent=None).order_by('sort_key_author', 'sort_key'),
39         'pictures': Picture.objects.order_by('sort_key_author', 'sort_key'),
40         'collections': Collection.objects.all(),
41     })
42
43
44 def book_list(request, filter=None, get_filter=None, template_name='catalogue/book_list.html',
45               nav_template_name='catalogue/snippets/book_list_nav.html',
46               list_template_name='catalogue/snippets/book_list.html', context=None):
47     """ generates a listing of all books, optionally filtered with a test function """
48     if get_filter:
49         filter = get_filter()
50     books_by_author, orphans, books_by_parent = Book.book_list(filter)
51     books_nav = OrderedDict()
52     for tag in books_by_author:
53         if books_by_author[tag]:
54             books_nav.setdefault(tag.sort_key[0], []).append(tag)
55     # WTF: dlaczego nie include?
56     return render_to_response(template_name, {
57         'rendered_nav': render_to_string(nav_template_name, {'books_nav': books_nav}),
58         'rendered_book_list': render_to_string(list_template_name, {
59             'books_by_author': books_by_author,
60             'orphans': orphans,
61             'books_by_parent': books_by_parent,
62         })
63     }, context_instance=RequestContext(request))
64
65
66 def audiobook_list(request):
67     books = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct().order_by(
68         'sort_key_author', 'sort_key')
69     books = list(books)
70     if len(books) > 3:
71         best = random.sample(books, 3)
72     else:
73         best = books
74
75     daisy = Book.objects.filter(media__type='daisy').distinct().order_by('sort_key_author', 'sort_key')
76
77     return render(request, 'catalogue/audiobook_list.html', {
78         'books': books,
79         'best': best,
80         'daisy': daisy,
81         })
82
83
84 def daisy_list(request):
85     return book_list(request, Q(media__type='daisy'),
86                      template_name='catalogue/daisy_list.html',
87                      )
88
89
90 def collection(request, slug):
91     coll = get_object_or_404(Collection, slug=slug)
92     return render(request, 'catalogue/collection.html', {'collection': coll})
93
94
95 def differentiate_tags(request, tags, ambiguous_slugs):
96     beginning = '/'.join(tag.url_chunk for tag in tags)
97     unparsed = '/'.join(ambiguous_slugs[1:])
98     options = []
99     for tag in Tag.objects.filter(slug=ambiguous_slugs[0]):
100         options.append({
101             'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
102             'tags': [tag]
103         })
104     return render_to_response(
105         'catalogue/differentiate_tags.html', {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},
106         context_instance=RequestContext(request))
107
108
109 # TODO: Rewrite this hellish piece of code which tries to do everything
110 def tagged_object_list(request, tags='', list_type='default'):
111     raw_tags = tags
112     # preliminary tests and conditions
113     gallery = list_type == 'gallery'
114     audiobooks = list_type == 'audiobooks'
115     try:
116         tags = Tag.get_tag_list(tags)
117     except Tag.DoesNotExist:
118         # Perhaps the user is asking about an author in Public Domain
119         # counter (they are not represented in tags)
120         chunks = tags.split('/')
121         if len(chunks) == 2 and chunks[0] == 'autor':
122             return pdcounter_views.author_detail(request, chunks[1])
123         else:
124             raise Http404
125     except Tag.MultipleObjectsReturned, e:
126         # Ask the user to disambiguate
127         return differentiate_tags(request, e.tags, e.ambiguous_slugs)
128     except Tag.UrlDeprecationWarning, e:
129         return HttpResponsePermanentRedirect(
130             reverse('tagged_object_list', args=['/'.join(tag.url_chunk for tag in e.tags)]))
131
132     try:
133         if len(tags) > settings.MAX_TAG_LIST:
134             raise Http404
135     except AttributeError:
136         pass
137
138     # beginning of digestion
139     theme_is_set = any(tag.category == 'theme' for tag in tags)
140     shelf_is_set = any(tag.category == 'set' for tag in tags)
141     only_shelf = shelf_is_set and len(tags) == 1
142     only_my_shelf = only_shelf and request.user == tags[0].user
143     tags_pks = [tag.pk for tag in tags]
144
145     if gallery and shelf_is_set:
146         raise Http404
147
148     daisy = None
149     if theme_is_set:
150         # Only fragments (or pirctureareas) here.
151         shelf_tags = [tag for tag in tags if tag.category == 'set']
152         fragment_tags = [tag for tag in tags if tag.category != 'set']
153         if gallery:
154             fragments = PictureArea.tagged.with_all(fragment_tags)
155         else:
156             fragments = Fragment.tagged.with_all(fragment_tags)
157
158         if shelf_tags:
159             # TODO: Pictures on shelves not supported yet.
160             books = Book.tagged.with_all(shelf_tags).order_by()
161             fragments = fragments.filter(Q(book__in=books) | Q(book__ancestor__in=books))
162
163         categories = split_tags(
164             Tag.objects.usage_for_queryset(fragments, counts=True).exclude(pk__in=tags_pks),
165         )
166
167         objects = fragments
168     else:
169         if gallery:
170             # TODO: Pictures on shelves not supported yet.
171             if tags:
172                 objects = Picture.tagged.with_all(tags)
173             else:
174                 objects = Picture.objects.all()
175             areas = PictureArea.objects.filter(picture__in=objects)
176             categories = split_tags(
177                 Tag.objects.usage_for_queryset(
178                     objects, counts=True).exclude(pk__in=tags_pks),
179                 Tag.objects.usage_for_queryset(
180                     areas, counts=True).filter(
181                     category__in=('theme', 'thing')).exclude(
182                     pk__in=tags_pks),
183             )
184         else:
185             if audiobooks:
186                 all_books = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
187                 if tags:
188                     all_books = Book.tagged.with_all(tags, all_books)
189                 objects = all_books
190                 # there's never only the daisy audiobook
191                 daisy = objects.filter(media__type='daisy').distinct().order_by('sort_key_author', 'sort_key')
192                 related_book_tags = Tag.objects.usage_for_queryset(
193                     objects, counts=True).exclude(
194                     category='set').exclude(pk__in=tags_pks)
195             else:
196                 if tags:
197                     all_books = Book.tagged.with_all(tags)
198                 else:
199                     all_books = Book.objects.filter(parent=None)
200                 if shelf_is_set:
201                     objects = all_books
202                     related_book_tags = Tag.objects.usage_for_queryset(
203                         objects, counts=True).exclude(
204                         category='set').exclude(pk__in=tags_pks)
205                 else:
206                     if tags:
207                         objects = Book.tagged_top_level(tags)
208                     else:
209                         objects = all_books
210                     related_book_tags = get_top_level_related_tags(tags)
211
212             fragments = Fragment.objects.filter(book__in=all_books)
213
214             categories = split_tags(
215                 related_book_tags,
216                 Tag.objects.usage_for_queryset(
217                     fragments, counts=True).filter(
218                     category='theme').exclude(pk__in=tags_pks),
219             )
220         objects = objects.order_by('sort_key_author', 'sort_key')
221
222     objects = list(objects)
223     if len(objects) > 3:
224         best = random.sample(objects, 3)
225     else:
226         best = objects
227
228     if not gallery and not objects and len(tags) == 1:
229         tag = tags[0]
230         if tag.category in ('theme', 'thing') and (
231                 PictureArea.tagged.with_any([tag]).exists() or
232                 Picture.tagged.with_any([tag]).exists()):
233             return redirect('tagged_object_list_gallery', raw_tags)
234
235     # this is becoming more and more hacky
236     if list_type == 'default' and not tags:
237         last_published = Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:20]
238     else:
239         last_published = None
240
241     return render_to_response(
242         'catalogue/tagged_object_list.html',
243         {
244             'object_list': objects,
245             'categories': categories,
246             'only_shelf': only_shelf,
247             'only_my_shelf': only_my_shelf,
248             'formats_form': forms.DownloadFormatsForm(),
249             'tags': tags,
250             'tag_ids': tags_pks,
251             'theme_is_set': theme_is_set,
252             'best': best,
253             'list_type': list_type,
254             'daisy': daisy,
255             'last_published': last_published,
256         },
257         context_instance=RequestContext(request))
258
259
260 def book_fragments(request, slug, theme_slug):
261     book = get_object_or_404(Book, slug=slug)
262     theme = get_object_or_404(Tag, slug=theme_slug, category='theme')
263     fragments = Fragment.tagged.with_all([theme]).filter(
264         Q(book=book) | Q(book__ancestor=book))
265
266     return render_to_response('catalogue/book_fragments.html', {
267         'book': book,
268         'theme': theme,
269         'fragments': fragments,
270     }, context_instance=RequestContext(request))
271
272
273 def book_detail(request, slug):
274     try:
275         book = Book.objects.get(slug=slug)
276     except Book.DoesNotExist:
277         return pdcounter_views.book_stub_detail(request, slug)
278
279     return render_to_response('catalogue/book_detail.html', {
280         'book': book,
281         'tags': book.tags.exclude(category__in=('set', 'theme')),
282         'book_children': book.children.all().order_by('parent_number', 'sort_key'),
283     }, context_instance=RequestContext(request))
284
285
286 def get_audiobooks(book):
287     ogg_files = {}
288     for m in book.media.filter(type='ogg').order_by().iterator():
289         ogg_files[m.name] = m
290
291     audiobooks = []
292     have_oggs = True
293     projects = set()
294     for mp3 in book.media.filter(type='mp3').iterator():
295         # ogg files are always from the same project
296         meta = mp3.extra_info
297         project = meta.get('project')
298         if not project:
299             # temporary fallback
300             project = u'CzytamySłuchając'
301
302         projects.add((project, meta.get('funded_by', '')))
303
304         media = {'mp3': mp3}
305
306         ogg = ogg_files.get(mp3.name)
307         if ogg:
308             media['ogg'] = ogg
309         else:
310             have_oggs = False
311         audiobooks.append(media)
312
313     projects = sorted(projects)
314     return audiobooks, projects, have_oggs
315
316
317 # używane tylko do audiobook_tree, które jest używane tylko w snippets/audiobook_list.html, które nie jest używane
318 def player(request, slug):
319     book = get_object_or_404(Book, slug=slug)
320     if not book.has_media('mp3'):
321         raise Http404
322
323     audiobooks, projects, have_oggs = get_audiobooks(book)
324
325     # extra_info = book.extra_info
326
327     return render_to_response('catalogue/player.html', {
328         'book': book,
329         'audiobook': '',
330         'audiobooks': audiobooks,
331         'projects': projects,
332     }, context_instance=RequestContext(request))
333
334
335 def book_text(request, slug):
336     book = get_object_or_404(Book, slug=slug)
337
338     if not book.has_html_file():
339         raise Http404
340     return render_to_response('catalogue/book_text.html', {'book': book,}, context_instance=RequestContext(request))
341
342
343 # ==========
344 # = Search =
345 # ==========
346
347 def _no_diacritics_regexp(query):
348     """ returns a regexp for searching for a query without diacritics
349
350     should be locale-aware """
351     names = {
352         u'a': u'aąĄ', u'c': u'cćĆ', u'e': u'eęĘ', u'l': u'lłŁ', u'n': u'nńŃ', u'o': u'oóÓ', u's': u'sśŚ',
353         u'z': u'zźżŹŻ',
354         u'ą': u'ąĄ', u'ć': u'ćĆ', u'ę': u'ęĘ', u'ł': u'łŁ', u'ń': u'ńŃ', u'ó': u'óÓ', u'ś': u'śŚ', u'ź': u'źŹ',
355         u'ż': u'żŻ'
356         }
357
358     def repl(m):
359         l = m.group()
360         return u"(%s)" % '|'.join(names[l])
361
362     return re.sub(u'[%s]' % (u''.join(names.keys())), repl, query)
363
364
365 def unicode_re_escape(query):
366     """ Unicode-friendly version of re.escape """
367     return re.sub(r'(?u)(\W)', r'\\\1', query)
368
369
370 def _word_starts_with(name, prefix):
371     """returns a Q object getting models having `name` contain a word
372     starting with `prefix`
373
374     We define word characters as alphanumeric and underscore, like in JS.
375
376     Works for MySQL, PostgreSQL, Oracle.
377     For SQLite, _sqlite* version is substituted for this.
378     """
379     kwargs = {}
380
381     prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
382     # can't use [[:<:]] (word start),
383     # but we want both `xy` and `(xy` to catch `(xyz)`
384     kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
385
386     return Q(**kwargs)
387
388
389 def _word_starts_with_regexp(prefix):
390     prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
391     return ur"(^|(?<=[^\wąćęłńóśźżĄĆĘŁŃÓŚŹŻ]))%s" % prefix
392
393
394 def _sqlite_word_starts_with(name, prefix):
395     """ version of _word_starts_with for SQLite
396
397     SQLite in Django uses Python re module
398     """
399     kwargs = {'%s__iregex' % name: _word_starts_with_regexp(prefix)}
400     return Q(**kwargs)
401
402
403 if hasattr(settings, 'DATABASES'):
404     if settings.DATABASES['default']['ENGINE'] == 'django.db.backends.sqlite3':
405         _word_starts_with = _sqlite_word_starts_with
406 elif settings.DATABASE_ENGINE == 'sqlite3':
407     _word_starts_with = _sqlite_word_starts_with
408
409
410 class App:
411     def __init__(self, name, view):
412         self.name = name
413         self._view = view
414         self.lower = name.lower()
415         self.category = 'application'
416
417     def view(self):
418         return reverse(*self._view)
419
420 _apps = (
421     App(u'Leśmianator', (u'lesmianator', )),
422     )
423
424
425 def _tags_starting_with(prefix, user=None):
426     prefix = prefix.lower()
427     # PD counter
428     book_stubs = BookStub.objects.filter(_word_starts_with('title', prefix))
429     authors = Author.objects.filter(_word_starts_with('name', prefix))
430
431     books = Book.objects.filter(_word_starts_with('title', prefix))
432     tags = Tag.objects.filter(_word_starts_with('name', prefix))
433     if user and user.is_authenticated():
434         tags = tags.filter(~Q(category='set') | Q(user=user))
435     else:
436         tags = tags.exclude(category='set')
437
438     prefix_regexp = re.compile(_word_starts_with_regexp(prefix))
439     return list(books) + list(tags) + [app for app in _apps if prefix_regexp.search(app.lower)] + list(book_stubs) + \
440         list(authors)
441
442
443 def _get_result_link(match, tag_list):
444     if isinstance(match, Tag):
445         return reverse('catalogue.views.tagged_object_list',
446                        kwargs={'tags': '/'.join(tag.url_chunk for tag in tag_list + [match])})
447     elif isinstance(match, App):
448         return match.view()
449     else:
450         return match.get_absolute_url()
451
452
453 def _get_result_type(match):
454     if isinstance(match, Book) or isinstance(match, BookStub):
455         match_type = 'book'
456     else:
457         match_type = match.category
458     return match_type
459
460
461 def books_starting_with(prefix):
462     prefix = prefix.lower()
463     return Book.objects.filter(_word_starts_with('title', prefix))
464
465
466 def find_best_matches(query, user=None):
467     """ Finds a Book, Tag, BookStub or Author best matching a query.
468
469     Returns a with:
470       - zero elements when nothing is found,
471       - one element when a best result is found,
472       - more then one element on multiple exact matches
473
474     Raises a ValueError on too short a query.
475     """
476
477     query = query.lower()
478     if len(query) < 2:
479         raise ValueError("query must have at least two characters")
480
481     result = tuple(_tags_starting_with(query, user))
482     # remove pdcounter stuff
483     book_titles = set(match.pretty_title().lower() for match in result
484                       if isinstance(match, Book))
485     authors = set(match.name.lower() for match in result
486                   if isinstance(match, Tag) and match.category == 'author')
487     result = tuple(res for res in result if not (
488                  (isinstance(res, BookStub) and res.pretty_title().lower() in book_titles) or
489                  (isinstance(res, Author) and res.name.lower() in authors)
490              ))
491
492     exact_matches = tuple(res for res in result if res.name.lower() == query)
493     if exact_matches:
494         return exact_matches
495     else:
496         return tuple(result)[:1]
497
498
499 def search(request):
500     tags = request.GET.get('tags', '')
501     prefix = request.GET.get('q', '')
502
503     try:
504         tag_list = Tag.get_tag_list(tags)
505     except (Tag.DoesNotExist, Tag.MultipleObjectsReturned, Tag.UrlDeprecationWarning):
506         tag_list = []
507
508     try:
509         result = find_best_matches(prefix, request.user)
510     except ValueError:
511         return render_to_response(
512             'catalogue/search_too_short.html', {'tags': tag_list, 'prefix': prefix},
513             context_instance=RequestContext(request))
514
515     if len(result) == 1:
516         return HttpResponseRedirect(_get_result_link(result[0], tag_list))
517     elif len(result) > 1:
518         return render_to_response(
519             'catalogue/search_multiple_hits.html',
520             {
521                 'tags': tag_list, 'prefix': prefix,
522                 'results': ((x, _get_result_link(x, tag_list), _get_result_type(x)) for x in result)
523             },
524             context_instance=RequestContext(request))
525     else:
526         form = PublishingSuggestForm(initial={"books": prefix + ", "})
527         return render_to_response(
528             'catalogue/search_no_hits.html',
529             {'tags': tag_list, 'prefix': prefix, "pubsuggest_form": form},
530             context_instance=RequestContext(request))
531
532
533 def tags_starting_with(request):
534     prefix = request.GET.get('q', '')
535     # Prefix must have at least 2 characters
536     if len(prefix) < 2:
537         return HttpResponse('')
538     tags_list = []
539     result = ""
540     for tag in _tags_starting_with(prefix, request.user):
541         if tag.name not in tags_list:
542             result += "\n" + tag.name
543             tags_list.append(tag.name)
544     return HttpResponse(result)
545
546
547 def json_tags_starting_with(request, callback=None):
548     # Callback for JSONP
549     prefix = request.GET.get('q', '')
550     callback = request.GET.get('callback', '')
551     # Prefix must have at least 2 characters
552     if len(prefix) < 2:
553         return HttpResponse('')
554     tags_list = []
555     for tag in _tags_starting_with(prefix, request.user):
556         if tag.name not in tags_list:
557             tags_list.append(tag.name)
558     if request.GET.get('mozhint', ''):
559         result = [prefix, tags_list]
560     else:
561         result = {"matches": tags_list}
562     response = JsonResponse(result, safe=False)
563     if callback:
564         response.content = callback + "(" + response.content + ");"
565     return response
566
567
568 # =========
569 # = Admin =
570 # =========
571 @login_required
572 @staff_required
573 def import_book(request):
574     """docstring for import_book"""
575     book_import_form = forms.BookImportForm(request.POST, request.FILES)
576     if book_import_form.is_valid():
577         try:
578             book_import_form.save()
579         except:
580             import sys
581             import pprint
582             import traceback
583             info = sys.exc_info()
584             exception = pprint.pformat(info[1])
585             tb = '\n'.join(traceback.format_tb(info[2]))
586             return HttpResponse(
587                     _("An error occurred: %(exception)s\n\n%(tb)s") % {'exception': exception, 'tb': tb},
588                     mimetype='text/plain')
589         return HttpResponse(_("Book imported successfully"))
590     else:
591         return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
592
593
594 # info views for API
595
596 def book_info(request, book_id, lang='pl'):
597     book = get_object_or_404(Book, id=book_id)
598     # set language by hand
599     translation.activate(lang)
600     return render_to_response('catalogue/book_info.html', {'book': book}, context_instance=RequestContext(request))
601
602
603 def tag_info(request, tag_id):
604     tag = get_object_or_404(Tag, id=tag_id)
605     return HttpResponse(tag.description)
606
607
608 def download_zip(request, format, slug=None):
609     if format in Book.ebook_formats:
610         url = Book.zip_format(format)
611     elif format in ('mp3', 'ogg') and slug is not None:
612         book = get_object_or_404(Book, slug=slug)
613         url = book.zip_audiobooks(format)
614     else:
615         raise Http404('No format specified for zip package')
616     return HttpResponseRedirect(urlquote_plus(settings.MEDIA_URL + url, safe='/?='))
617
618
619 class CustomPDFFormView(AjaxableFormView):
620     form_class = forms.CustomPDFForm
621     title = ugettext_lazy('Download custom PDF')
622     submit = ugettext_lazy('Download')
623     honeypot = True
624
625     def __call__(self, *args, **kwargs):
626         if settings.NO_CUSTOM_PDF:
627             raise Http404('Custom PDF is disabled')
628         return super(CustomPDFFormView, self).__call__(*args, **kwargs)
629
630     def form_args(self, request, obj):
631         """Override to parse view args and give additional args to the form."""
632         return (obj,), {}
633
634     def get_object(self, request, slug, *args, **kwargs):
635         return get_object_or_404(Book, slug=slug)
636
637     def context_description(self, request, obj):
638         return obj.pretty_title()
639
640
641 ####
642 # Includes
643 ####
644
645
646 @ssi_included
647 def book_mini(request, pk, with_link=True):
648     book = get_object_or_404(Book, pk=pk)
649     author_str = ", ".join(tag.name for tag in book.tags.filter(category='author'))
650     return render(request, 'catalogue/book_mini_box.html', {
651         'book': book,
652         'author_str': author_str,
653         'with_link': with_link,
654         'show_lang': book.language_code() != settings.LANGUAGE_CODE,
655     })
656
657
658 @ssi_included(get_ssi_vars=lambda pk: (lambda ipk: (
659         ('ssify.get_csrf_token',),
660         ('social_tags.likes_book', (ipk,)),
661         ('social_tags.book_shelf_tags', (ipk,)),
662     ))(ssi_expect(pk, int)))
663 def book_short(request, pk):
664     book = get_object_or_404(Book, pk=pk)
665     stage_note, stage_note_url = book.stage_note()
666     audiobooks, projects, have_oggs = get_audiobooks(book)
667
668     return render(request, 'catalogue/book_short.html', {
669         'book': book,
670         'has_audio': book.has_media('mp3'),
671         'main_link': book.get_absolute_url(),
672         'parents': book.parents(),
673         'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
674         'show_lang': book.language_code() != settings.LANGUAGE_CODE,
675         'stage_note': stage_note,
676         'stage_note_url': stage_note_url,
677         'audiobooks': audiobooks,
678         'have_oggs': have_oggs,
679     })
680
681
682 @ssi_included(
683     get_ssi_vars=lambda pk: book_short.get_ssi_vars(pk) +
684     (lambda ipk: (
685         ('social_tags.choose_cite', [ipk]),
686         ('catalogue_tags.choose_fragment', [ipk], {
687             'unless': Var('social_tags.choose_cite', [ipk])}),
688     ))(ssi_expect(pk, int)))
689 def book_wide(request, pk):
690     book = get_object_or_404(Book, pk=pk)
691     stage_note, stage_note_url = book.stage_note()
692     extra_info = book.extra_info
693     audiobooks, projects, have_oggs = get_audiobooks(book)
694
695     return render(request, 'catalogue/book_wide.html', {
696         'book': book,
697         'has_audio': book.has_media('mp3'),
698         'parents': book.parents(),
699         'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
700         'show_lang': book.language_code() != settings.LANGUAGE_CODE,
701         'stage_note': stage_note,
702         'stage_note_url': stage_note_url,
703
704         'main_link': reverse('book_text', args=[book.slug]) if book.html_file else None,
705         'extra_info': extra_info,
706         'hide_about': extra_info.get('about', '').startswith('http://wiki.wolnepodreczniki.pl'),
707         'audiobooks': audiobooks,
708         'have_oggs': have_oggs,
709     })
710
711
712 @ssi_included
713 def fragment_short(request, pk):
714     fragment = get_object_or_404(Fragment, pk=pk)
715     return render(request, 'catalogue/fragment_short.html', {'fragment': fragment})
716
717
718 @ssi_included
719 def fragment_promo(request, pk):
720     fragment = get_object_or_404(Fragment, pk=pk)
721     return render(request, 'catalogue/fragment_promo.html', {'fragment': fragment})
722
723
724 @ssi_included
725 def tag_box(request, pk):
726     tag = get_object_or_404(Tag, pk=pk)
727     assert tag.category != 'set'
728
729     return render(request, 'catalogue/tag_box.html', {
730         'tag': tag,
731     })
732
733
734 @ssi_included
735 def collection_box(request, pk):
736     obj = get_object_or_404(Collection, pk=pk)
737
738     return render(request, 'catalogue/collection_box.html', {
739         'obj': obj,
740     })
741
742
743 def tag_catalogue(request, category):
744     if category == 'theme':
745         tags = Tag.objects.usage_for_model(
746             Fragment, counts=True).filter(category='theme')
747     else:
748         tags = list(get_top_level_related_tags((), categories=(category,)))
749
750     described_tags = [tag for tag in tags if tag.description]
751
752     if len(described_tags) > 4:
753         best = random.sample(described_tags, 4)
754     else:
755         best = described_tags
756
757     return render(request, 'catalogue/tag_catalogue.html', {
758         'tags': tags,
759         'best': best,
760         'title': constants.CATEGORIES_NAME_PLURAL[category],
761         'whole_category': constants.WHOLE_CATEGORY[category],
762     })
763
764
765 def collections(request):
766     objects = Collection.objects.all()
767
768     if len(objects) > 3:
769         best = random.sample(objects, 3)
770     else:
771         best = objects
772
773     return render(request, 'catalogue/collections.html', {
774         'objects': objects,
775         'best': best,
776     })