6782e53691a8dfeb1c79c4aaa41412b61d265751
[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, QuerySet
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 from catalogue.models.tag import prefetch_relations
33
34 staff_required = user_passes_test(lambda user: user.is_staff)
35
36
37 def catalogue(request):
38     return render(request, 'catalogue/catalogue.html', {
39         'books': Book.objects.filter(parent=None),
40         'pictures': Picture.objects.all(),
41         'collections': Collection.objects.all(),
42         'active_menu_item': 'all_works',
43     })
44
45
46 def book_list(request, filters=None, template_name='catalogue/book_list.html',
47               nav_template_name='catalogue/snippets/book_list_nav.html',
48               list_template_name='catalogue/snippets/book_list.html'):
49     """ generates a listing of all books, optionally filtered """
50     books_by_author, orphans, books_by_parent = Book.book_list(filters)
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 daisy_list(request):
67     return book_list(request, Q(media__type='daisy'), template_name='catalogue/daisy_list.html')
68
69
70 def collection(request, slug):
71     coll = get_object_or_404(Collection, slug=slug)
72     return render(request, 'catalogue/collection.html', {'collection': coll})
73
74
75 def differentiate_tags(request, tags, ambiguous_slugs):
76     beginning = '/'.join(tag.url_chunk for tag in tags)
77     unparsed = '/'.join(ambiguous_slugs[1:])
78     options = []
79     for tag in Tag.objects.filter(slug=ambiguous_slugs[0]):
80         options.append({
81             'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
82             'tags': [tag]
83         })
84     return render_to_response(
85         'catalogue/differentiate_tags.html', {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},
86         context_instance=RequestContext(request))
87
88
89 def object_list(request, objects, fragments=None, related_tags=None, tags=None, list_type='books', extra=None):
90     if not tags:
91         tags = []
92     tag_ids = [tag.pk for tag in tags]
93
94     related_tag_lists = []
95     if related_tags:
96         related_tag_lists.append(related_tags)
97     else:
98         related_tag_lists.append(
99             Tag.objects.usage_for_queryset(objects, counts=True).exclude(category='set').exclude(pk__in=tag_ids))
100     if not (extra and extra.get('theme_is_set')):
101         if fragments is None:
102             if list_type == 'gallery':
103                 fragments = PictureArea.objects.filter(picture__in=objects)
104             else:
105                 fragments = Fragment.objects.filter(book__in=objects)
106         related_tag_lists.append(
107             Tag.objects.usage_for_queryset(fragments, counts=True).filter(category='theme').exclude(pk__in=tag_ids)
108             .only('name', 'sort_key', 'category', 'slug'))
109         if isinstance(objects, QuerySet):
110             objects = prefetch_relations(objects, 'author')
111
112     categories = split_tags(*related_tag_lists)
113
114     objects = list(objects)
115
116     if not objects and len(tags) == 1 and list_type == 'books':
117         if PictureArea.tagged.with_any(tags).exists() or Picture.tagged.with_any(tags).exists():
118             return redirect('tagged_object_list_gallery', '/'.join(tag.url_chunk for tag in tags))
119
120     if len(objects) > 3:
121         best = random.sample(objects, 3)
122     else:
123         best = objects
124
125     result = {
126         'object_list': objects,
127         'categories': categories,
128         'list_type': list_type,
129         'tags': tags,
130
131         'formats_form': forms.DownloadFormatsForm(),
132         'best': best,
133         'active_menu_item': list_type,
134     }
135     if extra:
136         result.update(extra)
137     return render_to_response(
138         'catalogue/tagged_object_list.html', result,
139         context_instance=RequestContext(request))
140
141
142 def literature(request):
143     books = Book.objects.filter(parent=None)
144
145     # last_published = Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:20]
146     # most_popular = Book.objects.exclude(cover_thumb='')\
147     #                    .order_by('-popularity__count', 'sort_key_author', 'sort_key')[:20]
148     return object_list(request, books, related_tags=get_top_level_related_tags([]))
149     # extra={
150     #     'last_published': last_published,
151     #     'most_popular': most_popular,
152     # })
153
154
155 def gallery(request):
156     return object_list(request, Picture.objects.all(), list_type='gallery')
157
158
159 def audiobooks(request):
160     audiobooks = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
161     return object_list(request, audiobooks, list_type='audiobooks', extra={
162         'daisy': Book.objects.filter(media__type='daisy').distinct(),
163     })
164
165
166 class ResponseInstead(Exception):
167     def __init__(self, response):
168         super(ResponseInstead, self).__init__()
169         self.response = response
170
171
172 def analyse_tags(request, tag_str):
173     try:
174         tags = Tag.get_tag_list(tag_str)
175     except Tag.DoesNotExist:
176         # Perhaps the user is asking about an author in Public Domain
177         # counter (they are not represented in tags)
178         chunks = tag_str.split('/')
179         if len(chunks) == 2 and chunks[0] == 'autor':
180             raise ResponseInstead(pdcounter_views.author_detail(request, chunks[1]))
181         else:
182             raise Http404
183     except Tag.MultipleObjectsReturned, e:
184         # Ask the user to disambiguate
185         raise ResponseInstead(differentiate_tags(request, e.tags, e.ambiguous_slugs))
186     except Tag.UrlDeprecationWarning, e:
187         raise ResponseInstead(HttpResponsePermanentRedirect(
188             reverse('tagged_object_list', args=['/'.join(tag.url_chunk for tag in e.tags)])))
189
190     try:
191         if len(tags) > settings.MAX_TAG_LIST:
192             raise Http404
193     except AttributeError:
194         pass
195
196     return tags
197
198
199 def theme_list(request, tags, list_type):
200     shelf_tags = [tag for tag in tags if tag.category == 'set']
201     fragment_tags = [tag for tag in tags if tag.category != 'set']
202     if list_type == 'gallery':
203         fragments = PictureArea.tagged.with_all(fragment_tags)
204     else:
205         fragments = Fragment.tagged.with_all(fragment_tags)
206
207     if shelf_tags:
208         # TODO: Pictures on shelves not supported yet.
209         books = Book.tagged.with_all(shelf_tags).order_by()
210         fragments = fragments.filter(Q(book__in=books) | Q(book__ancestor__in=books))
211
212     if not fragments and len(tags) == 1 and list_type == 'books':
213         if PictureArea.tagged.with_any(tags).exists() or Picture.tagged.with_any(tags).exists():
214             return redirect('tagged_object_list_gallery', '/'.join(tag.url_chunk for tag in tags))
215
216     return object_list(request, fragments, tags=tags, list_type=list_type, extra={
217         'theme_is_set': True,
218         'active_menu_item': 'theme',
219     })
220
221
222 def tagged_object_list(request, tags, list_type):
223     try:
224         tags = analyse_tags(request, tags)
225     except ResponseInstead as e:
226         return e.response
227
228     if list_type == 'gallery' and any(tag.category == 'set' for tag in tags):
229         raise Http404
230
231     if any(tag.category in ('theme', 'thing') for tag in tags):
232         return theme_list(request, tags, list_type=list_type)
233
234     if list_type == 'books':
235         books = Book.tagged.with_all(tags)
236
237         if any(tag.category == 'set' for tag in tags):
238             params = {'objects': books}
239         else:
240             params = {
241                 'objects': Book.tagged_top_level(tags),
242                 'fragments': Fragment.objects.filter(book__in=books),
243                 'related_tags': get_top_level_related_tags(tags),
244             }
245     elif list_type == 'gallery':
246         params = {'objects': Picture.tagged.with_all(tags)}
247     elif list_type == 'audiobooks':
248         audiobooks = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
249         params = {
250             'objects': Book.tagged.with_all(tags, audiobooks),
251             'extra': {
252                 'daisy': Book.tagged.with_all(tags, audiobooks.filter(media__type='daisy').distinct()),
253             }
254         }
255     else:
256         raise Http404
257
258     return object_list(request, tags=tags, list_type=list_type, **params)
259
260
261 def book_fragments(request, slug, theme_slug):
262     book = get_object_or_404(Book, slug=slug)
263     theme = get_object_or_404(Tag, slug=theme_slug, category='theme')
264     fragments = Fragment.tagged.with_all([theme]).filter(
265         Q(book=book) | Q(book__ancestor=book))
266
267     return render_to_response('catalogue/book_fragments.html', {
268         'book': book,
269         'theme': theme,
270         'fragments': fragments,
271         'active_menu_item': 'books',
272     }, context_instance=RequestContext(request))
273
274
275 def book_detail(request, slug):
276     try:
277         book = Book.objects.get(slug=slug)
278     except Book.DoesNotExist:
279         return pdcounter_views.book_stub_detail(request, slug)
280
281     return render_to_response('catalogue/book_detail.html', {
282         'book': book,
283         'tags': book.tags.exclude(category__in=('set', 'theme')),
284         'book_children': book.children.all().order_by('parent_number', 'sort_key'),
285         'active_menu_item': 'books',
286     }, context_instance=RequestContext(request))
287
288
289 def get_audiobooks(book):
290     ogg_files = {}
291     for m in book.media.filter(type='ogg').order_by().iterator():
292         ogg_files[m.name] = m
293
294     audiobooks = []
295     have_oggs = True
296     projects = set()
297     for mp3 in book.media.filter(type='mp3').iterator():
298         # ogg files are always from the same project
299         meta = mp3.extra_info
300         project = meta.get('project')
301         if not project:
302             # temporary fallback
303             project = u'CzytamySłuchając'
304
305         projects.add((project, meta.get('funded_by', '')))
306
307         media = {'mp3': mp3}
308
309         ogg = ogg_files.get(mp3.name)
310         if ogg:
311             media['ogg'] = ogg
312         else:
313             have_oggs = False
314         audiobooks.append(media)
315
316     projects = sorted(projects)
317     return audiobooks, projects, have_oggs
318
319
320 # używane w publicznym interfejsie
321 def player(request, slug):
322     book = get_object_or_404(Book, slug=slug)
323     if not book.has_media('mp3'):
324         raise Http404
325
326     audiobooks, projects, have_oggs = get_audiobooks(book)
327
328     return render_to_response('catalogue/player.html', {
329         'book': book,
330         'audiobook': '',
331         'audiobooks': audiobooks,
332         'projects': projects,
333     }, context_instance=RequestContext(request))
334
335
336 def book_text(request, slug):
337     book = get_object_or_404(Book, slug=slug)
338
339     if not book.has_html_file():
340         raise Http404
341     return render_to_response('catalogue/book_text.html', {'book': book}, context_instance=RequestContext(request))
342
343
344 # ==========
345 # = Search =
346 # ==========
347
348 def _no_diacritics_regexp(query):
349     """ returns a regexp for searching for a query without diacritics
350
351     should be locale-aware """
352     names = {
353         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',
354         u'z': u'zźżŹŻ',
355         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',
356         u'ż': u'żŻ'
357         }
358
359     def repl(m):
360         l = m.group()
361         return u"(?:%s)" % '|'.join(names[l])
362
363     return re.sub(u'[%s]' % (u''.join(names.keys())), repl, query)
364
365
366 def unicode_re_escape(query):
367     """ Unicode-friendly version of re.escape """
368     return re.sub(r'(?u)(\W)', r'\\\1', query)
369
370
371 def _word_starts_with(name, prefix):
372     """returns a Q object getting models having `name` contain a word
373     starting with `prefix`
374
375     We define word characters as alphanumeric and underscore, like in JS.
376
377     Works for MySQL, PostgreSQL, Oracle.
378     For SQLite, _sqlite* version is substituted for this.
379     """
380     kwargs = {}
381
382     prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
383     # can't use [[:<:]] (word start),
384     # but we want both `xy` and `(xy` to catch `(xyz)`
385     kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
386
387     return Q(**kwargs)
388
389
390 def _word_starts_with_regexp(prefix):
391     prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
392     return ur"(^|(?<=[^\wąćęłńóśźżĄĆĘŁŃÓŚŹŻ]))%s" % prefix
393
394
395 def _sqlite_word_starts_with(name, prefix):
396     """ version of _word_starts_with for SQLite
397
398     SQLite in Django uses Python re module
399     """
400     kwargs = {'%s__iregex' % name: _word_starts_with_regexp(prefix)}
401     return Q(**kwargs)
402
403
404 if hasattr(settings, 'DATABASES'):
405     if settings.DATABASES['default']['ENGINE'] == 'django.db.backends.sqlite3':
406         _word_starts_with = _sqlite_word_starts_with
407 elif settings.DATABASE_ENGINE == 'sqlite3':
408     _word_starts_with = _sqlite_word_starts_with
409
410
411 class App:
412     def __init__(self, name, view):
413         self.name = name
414         self._view = view
415         self.lower = name.lower()
416         self.category = 'application'
417
418     def view(self):
419         return reverse(*self._view)
420
421 _apps = (
422     App(u'Leśmianator', (u'lesmianator', )),
423     )
424
425
426 def _tags_starting_with(prefix, user=None):
427     prefix = prefix.lower()
428     # PD counter
429     book_stubs = BookStub.objects.filter(_word_starts_with('title', prefix))
430     authors = Author.objects.filter(_word_starts_with('name', prefix))
431
432     books = Book.objects.filter(_word_starts_with('title', prefix))
433     tags = Tag.objects.filter(_word_starts_with('name', prefix))
434     if user and user.is_authenticated():
435         tags = tags.filter(~Q(category='set') | Q(user=user))
436     else:
437         tags = tags.exclude(category='set')
438
439     prefix_regexp = re.compile(_word_starts_with_regexp(prefix))
440     return list(books) + list(tags) + [app for app in _apps if prefix_regexp.search(app.lower)] + list(book_stubs) + \
441         list(authors)
442
443
444 def _get_result_link(match, tag_list):
445     if isinstance(match, Tag):
446         return reverse('catalogue.views.tagged_object_list',
447                        kwargs={'tags': '/'.join(tag.url_chunk for tag in tag_list + [match])})
448     elif isinstance(match, App):
449         return match.view()
450     else:
451         return match.get_absolute_url()
452
453
454 def _get_result_type(match):
455     if isinstance(match, Book) or isinstance(match, BookStub):
456         match_type = 'book'
457     else:
458         match_type = match.category
459     return match_type
460
461
462 def books_starting_with(prefix):
463     prefix = prefix.lower()
464     return Book.objects.filter(_word_starts_with('title', prefix))
465
466
467 def find_best_matches(query, user=None):
468     """ Finds a Book, Tag, BookStub or Author best matching a query.
469
470     Returns a with:
471       - zero elements when nothing is found,
472       - one element when a best result is found,
473       - more then one element on multiple exact matches
474
475     Raises a ValueError on too short a query.
476     """
477
478     query = query.lower()
479     if len(query) < 2:
480         raise ValueError("query must have at least two characters")
481
482     result = tuple(_tags_starting_with(query, user))
483     # remove pdcounter stuff
484     book_titles = set(match.pretty_title().lower() for match in result
485                       if isinstance(match, Book))
486     authors = set(match.name.lower() for match in result
487                   if isinstance(match, Tag) and match.category == 'author')
488     result = tuple(res for res in result if not (
489                  (isinstance(res, BookStub) and res.pretty_title().lower() in book_titles) or
490                  (isinstance(res, Author) and res.name.lower() in authors)
491              ))
492
493     exact_matches = tuple(res for res in result if res.name.lower() == query)
494     if exact_matches:
495         return exact_matches
496     else:
497         return tuple(result)[:1]
498
499
500 def search(request):
501     tags = request.GET.get('tags', '')
502     prefix = request.GET.get('q', '')
503
504     try:
505         tag_list = Tag.get_tag_list(tags)
506     except (Tag.DoesNotExist, Tag.MultipleObjectsReturned, Tag.UrlDeprecationWarning):
507         tag_list = []
508
509     try:
510         result = find_best_matches(prefix, request.user)
511     except ValueError:
512         return render_to_response(
513             'catalogue/search_too_short.html', {'tags': tag_list, 'prefix': prefix},
514             context_instance=RequestContext(request))
515
516     if len(result) == 1:
517         return HttpResponseRedirect(_get_result_link(result[0], tag_list))
518     elif len(result) > 1:
519         return render_to_response(
520             'catalogue/search_multiple_hits.html',
521             {
522                 'tags': tag_list, 'prefix': prefix,
523                 'results': ((x, _get_result_link(x, tag_list), _get_result_type(x)) for x in result)
524             },
525             context_instance=RequestContext(request))
526     else:
527         form = PublishingSuggestForm(initial={"books": prefix + ", "})
528         return render_to_response(
529             'catalogue/search_no_hits.html',
530             {'tags': tag_list, 'prefix': prefix, "pubsuggest_form": form},
531             context_instance=RequestContext(request))
532
533
534 def tags_starting_with(request):
535     prefix = request.GET.get('q', '')
536     # Prefix must have at least 2 characters
537     if len(prefix) < 2:
538         return HttpResponse('')
539     tags_list = []
540     result = ""
541     for tag in _tags_starting_with(prefix, request.user):
542         if tag.name not in tags_list:
543             result += "\n" + tag.name
544             tags_list.append(tag.name)
545     return HttpResponse(result)
546
547
548 def json_tags_starting_with(request, callback=None):
549     # Callback for JSONP
550     prefix = request.GET.get('q', '')
551     callback = request.GET.get('callback', '')
552     # Prefix must have at least 2 characters
553     if len(prefix) < 2:
554         return HttpResponse('')
555     tags_list = []
556     for tag in _tags_starting_with(prefix, request.user):
557         if tag.name not in tags_list:
558             tags_list.append(tag.name)
559     if request.GET.get('mozhint', ''):
560         result = [prefix, tags_list]
561     else:
562         result = {"matches": tags_list}
563     response = JsonResponse(result, safe=False)
564     if callback:
565         response.content = callback + "(" + response.content + ");"
566     return response
567
568
569 # =========
570 # = Admin =
571 # =========
572 @login_required
573 @staff_required
574 def import_book(request):
575     """docstring for import_book"""
576     book_import_form = forms.BookImportForm(request.POST, request.FILES)
577     if book_import_form.is_valid():
578         try:
579             book_import_form.save()
580         except:
581             import sys
582             import pprint
583             import traceback
584             info = sys.exc_info()
585             exception = pprint.pformat(info[1])
586             tb = '\n'.join(traceback.format_tb(info[2]))
587             return HttpResponse(
588                     _("An error occurred: %(exception)s\n\n%(tb)s") % {'exception': exception, 'tb': tb},
589                     mimetype='text/plain')
590         return HttpResponse(_("Book imported successfully"))
591     else:
592         return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
593
594
595 # info views for API
596
597 def book_info(request, book_id, lang='pl'):
598     book = get_object_or_404(Book, id=book_id)
599     # set language by hand
600     translation.activate(lang)
601     return render_to_response('catalogue/book_info.html', {'book': book}, context_instance=RequestContext(request))
602
603
604 def tag_info(request, tag_id):
605     tag = get_object_or_404(Tag, id=tag_id)
606     return HttpResponse(tag.description)
607
608
609 def download_zip(request, format, slug=None):
610     if format in Book.ebook_formats:
611         url = Book.zip_format(format)
612     elif format in ('mp3', 'ogg') and slug is not None:
613         book = get_object_or_404(Book, slug=slug)
614         url = book.zip_audiobooks(format)
615     else:
616         raise Http404('No format specified for zip package')
617     return HttpResponseRedirect(urlquote_plus(settings.MEDIA_URL + url, safe='/?='))
618
619
620 class CustomPDFFormView(AjaxableFormView):
621     form_class = forms.CustomPDFForm
622     title = ugettext_lazy('Download custom PDF')
623     submit = ugettext_lazy('Download')
624     honeypot = True
625
626     def __call__(self, *args, **kwargs):
627         if settings.NO_CUSTOM_PDF:
628             raise Http404('Custom PDF is disabled')
629         return super(CustomPDFFormView, self).__call__(*args, **kwargs)
630
631     def form_args(self, request, obj):
632         """Override to parse view args and give additional args to the form."""
633         return (obj,), {}
634
635     def get_object(self, request, slug, *args, **kwargs):
636         return get_object_or_404(Book, slug=slug)
637
638     def context_description(self, request, obj):
639         return obj.pretty_title()
640
641
642 ####
643 # Includes
644 ####
645
646
647 @ssi_included
648 def book_mini(request, pk, with_link=True):
649     # book = get_object_or_404(Book, pk=pk)
650     try:
651         book = Book.objects.only('cover_thumb', 'title', 'language', 'slug').get(pk=pk)
652     except Book.DoesNotExist:
653         raise Http404
654     return render(request, 'catalogue/book_mini_box.html', {
655         'book': book,
656         'no_link': not with_link,
657     })
658
659
660 @ssi_included(get_ssi_vars=lambda pk: (lambda ipk: (
661         ('ssify.get_csrf_token',),
662         ('social_tags.likes_book', (ipk,)),
663         ('social_tags.book_shelf_tags', (ipk,)),
664     ))(ssi_expect(pk, int)))
665 def book_short(request, pk):
666     book = get_object_or_404(Book, pk=pk)
667     stage_note, stage_note_url = book.stage_note()
668     audiobooks, projects, have_oggs = get_audiobooks(book)
669
670     return render(request, 'catalogue/book_short.html', {
671         'book': book,
672         'has_audio': book.has_media('mp3'),
673         'main_link': book.get_absolute_url(),
674         'parents': book.parents(),
675         'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
676         'show_lang': book.language_code() != settings.LANGUAGE_CODE,
677         'stage_note': stage_note,
678         'stage_note_url': stage_note_url,
679         'audiobooks': audiobooks,
680         'have_oggs': have_oggs,
681     })
682
683
684 @ssi_included(
685     get_ssi_vars=lambda pk: book_short.get_ssi_vars(pk) +
686     (lambda ipk: (
687         ('social_tags.choose_cite', [ipk]),
688         ('catalogue_tags.choose_fragment', [ipk], {
689             'unless': Var('social_tags.choose_cite', [ipk])}),
690     ))(ssi_expect(pk, int)))
691 def book_wide(request, pk):
692     book = get_object_or_404(Book, pk=pk)
693     stage_note, stage_note_url = book.stage_note()
694     extra_info = book.extra_info
695     audiobooks, projects, have_oggs = get_audiobooks(book)
696
697     return render(request, 'catalogue/book_wide.html', {
698         'book': book,
699         'has_audio': book.has_media('mp3'),
700         'parents': book.parents(),
701         'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
702         'show_lang': book.language_code() != settings.LANGUAGE_CODE,
703         'stage_note': stage_note,
704         'stage_note_url': stage_note_url,
705
706         'main_link': reverse('book_text', args=[book.slug]) if book.html_file else None,
707         'extra_info': extra_info,
708         'hide_about': extra_info.get('about', '').startswith('http://wiki.wolnepodreczniki.pl'),
709         'audiobooks': audiobooks,
710         'have_oggs': have_oggs,
711     })
712
713
714 @ssi_included
715 def fragment_short(request, pk):
716     fragment = get_object_or_404(Fragment, pk=pk)
717     return render(request, 'catalogue/fragment_short.html', {'fragment': fragment})
718
719
720 @ssi_included
721 def fragment_promo(request, pk):
722     fragment = get_object_or_404(Fragment, pk=pk)
723     return render(request, 'catalogue/fragment_promo.html', {'fragment': fragment})
724
725
726 @ssi_included
727 def tag_box(request, pk):
728     tag = get_object_or_404(Tag, pk=pk)
729     assert tag.category != 'set'
730
731     return render(request, 'catalogue/tag_box.html', {
732         'tag': tag,
733     })
734
735
736 @ssi_included
737 def collection_box(request, pk):
738     collection = get_object_or_404(Collection, pk=pk)
739
740     return render(request, 'catalogue/collection_box.html', {
741         'collection': collection,
742     })
743
744
745 def tag_catalogue(request, category):
746     if category == 'theme':
747         tags = Tag.objects.usage_for_model(
748             Fragment, counts=True).filter(category='theme')
749     else:
750         tags = list(get_top_level_related_tags((), categories=(category,)))
751
752     described_tags = [tag for tag in tags if tag.description]
753
754     if len(described_tags) > 4:
755         best = random.sample(described_tags, 4)
756     else:
757         best = described_tags
758
759     return render(request, 'catalogue/tag_catalogue.html', {
760         'tags': tags,
761         'best': best,
762         'title': constants.CATEGORIES_NAME_PLURAL[category],
763         'whole_category': constants.WHOLE_CATEGORY[category],
764         'active_menu_item': 'theme' if category == 'theme' else None,
765     })
766
767
768 def collections(request):
769     objects = Collection.objects.all()
770
771     if len(objects) > 3:
772         best = random.sample(objects, 3)
773     else:
774         best = objects
775
776     return render(request, 'catalogue/collections.html', {
777         'objects': objects,
778         'best': best,
779     })