X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/4f985994c54a53688a15c21ba599d7bcdc1e4974..4e290186955957b103282f78036b344e7e38d279:/apps/catalogue/views.py diff --git a/apps/catalogue/views.py b/apps/catalogue/views.py index 127648b66..102b38ee5 100644 --- a/apps/catalogue/views.py +++ b/apps/catalogue/views.py @@ -8,6 +8,8 @@ import sys import pprint import traceback import re +import itertools +from operator import itemgetter from django.conf import settings from django.template import RequestContext @@ -71,22 +73,41 @@ def book_list(request): context_instance=RequestContext(request)) -def tagged_object_list(request, tags=''): - # Prevent DoS attacks on our database - if len(tags.split('/')) > 6: - raise Http404 +def differentiate_tags(request, tags, ambiguous_slugs): + beginning = '/'.join(tag.url_chunk for tag in tags) + unparsed = '/'.join(ambiguous_slugs[1:]) + options = [] + for tag in models.Tag.objects.exclude(category='book').filter(slug=ambiguous_slugs[0]): + options.append({ + 'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'), + 'tags': [tag] + }) + return render_to_response('catalogue/differentiate_tags.html', + {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]}, + context_instance=RequestContext(request)) + +def tagged_object_list(request, tags=''): try: tags = models.Tag.get_tag_list(tags) except models.Tag.DoesNotExist: raise Http404 + except models.Tag.MultipleObjectsReturned, e: + return differentiate_tags(request, e.tags, e.ambiguous_slugs) + + try: + if len(tags) > settings.MAX_TAG_LIST: + raise Http404 + except AttributeError: + pass if len([tag for tag in tags if tag.category == 'book']): raise Http404 theme_is_set = [tag for tag in tags if tag.category == 'theme'] - shelf_is_set = len(tags) == 1 and tags[0].category == 'set' - my_shelf_is_set = shelf_is_set and request.user.is_authenticated() and request.user == tags[0].user + shelf_is_set = [tag for tag in tags if tag.category == 'set'] + only_shelf = shelf_is_set and len(tags) == 1 + only_my_shelf = only_shelf and request.user.is_authenticated() and request.user == tags[0].user objects = only_author = pd_counter = None categories = {} @@ -98,11 +119,11 @@ def tagged_object_list(request, tags=''): if shelf_tags: books = models.Book.tagged.with_all(shelf_tags).order_by() - l_tags = [models.Tag.objects.get(slug='l-' + book.slug) for book in books] + l_tags = [book.book_tag() for book in books] fragments = models.Fragment.tagged.with_any(l_tags, fragments) # newtagging goes crazy if we just try: - #related_tags = models.Tag.objects.usage_for_queryset(fragments, counts=True, + #related_tags = models.Tag.objects.usage_for_queryset(fragments, counts=True, # extra={'where': ["catalogue_tag.category != 'book'"]}) fragment_keys = [fragment.pk for fragment in fragments] if fragment_keys: @@ -114,26 +135,30 @@ def tagged_object_list(request, tags=''): objects = fragments else: - books = models.Book.tagged.with_all(tags).order_by() - l_tags = [models.Tag.objects.get(slug='l-' + book.slug) for book in books] - book_keys = [book.pk for book in books] - # newtagging goes crazy if we just try: - #related_tags = models.Tag.objects.usage_for_queryset(books, counts=True, - # extra={'where': ["catalogue_tag.category NOT IN ('set', 'book', 'theme')"]}) - if book_keys: - related_tags = models.Book.tags.usage(counts=True, - filters={'pk__in': book_keys}, - extra={'where': ["catalogue_tag.category NOT IN ('set', 'book', 'theme')"]}) - categories = split_tags(related_tags) - - fragment_keys = [fragment.pk for fragment in models.Fragment.tagged.with_any(l_tags)] - if fragment_keys: - categories['theme'] = models.Fragment.tags.usage(counts=True, - filters={'pk__in': fragment_keys}, - extra={'where': ["catalogue_tag.category = 'theme'"]}) - - books = books.exclude(parent__in=book_keys) - objects = books + # get relevant books and their tags + objects = models.Book.tagged.with_all(tags).order_by() + if not shelf_is_set: + # eliminate descendants + l_tags = [book.book_tag() for book in objects] + descendants_keys = [book.pk for book in models.Book.tagged.with_any(l_tags)] + if descendants_keys: + objects = objects.exclude(pk__in=descendants_keys) + + # get related tags from `tag_counter` and `theme_counter` + related_counts = {} + tags_pks = [tag.pk for tag in tags] + for book in objects: + for tag_pk, value in itertools.chain(book.tag_counter.iteritems(), book.theme_counter.iteritems()): + if tag_pk in tags_pks: + continue + related_counts[tag_pk] = related_counts.get(tag_pk, 0) + value + related_tags = models.Tag.objects.filter(pk__in=related_counts.keys()) + related_tags = [tag for tag in related_tags if tag not in tags] + for tag in related_tags: + tag.count = related_counts[tag.pk] + + categories = split_tags(related_tags) + del related_tags if not objects: only_author = len(tags) == 1 and tags[0].category == 'author' @@ -146,10 +171,10 @@ def tagged_object_list(request, tags=''): template_name='catalogue/tagged_object_list.html', extra_context={ 'categories': categories, - 'shelf_is_set': shelf_is_set, + 'only_shelf': only_shelf, 'only_author': only_author, 'pd_counter': pd_counter, - 'user_is_owner': my_shelf_is_set, + 'only_my_shelf': only_my_shelf, 'formats_form': forms.DownloadFormatsForm(), 'tags': tags, @@ -159,8 +184,8 @@ def tagged_object_list(request, tags=''): def book_fragments(request, book_slug, theme_slug): book = get_object_or_404(models.Book, slug=book_slug) - book_tag = get_object_or_404(models.Tag, slug='l-' + book_slug) - theme = get_object_or_404(models.Tag, slug=theme_slug) + book_tag = get_object_or_404(models.Tag, slug='l-' + book_slug, category='book') + theme = get_object_or_404(models.Tag, slug=theme_slug, category='theme') fragments = models.Fragment.tagged.with_all([book_tag, theme]) form = forms.SearchForm() @@ -174,7 +199,7 @@ def book_detail(request, slug): except models.Book.DoesNotExist: return book_stub_detail(request, slug) - book_tag = get_object_or_404(models.Tag, slug='l-' + slug) + book_tag = book.book_tag() tags = list(book.tags.filter(~Q(category='set'))) categories = split_tags(tags) book_children = book.children.all().order_by('parent_number') @@ -215,7 +240,7 @@ def book_text(request, slug): def _no_diacritics_regexp(query): """ returns a regexp for searching for a query without diacritics - + should be locale-aware """ names = { 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', u'z':u'zźżŹŻ', @@ -233,16 +258,16 @@ def unicode_re_escape(query): def _word_starts_with(name, prefix): """returns a Q object getting models having `name` contain a word starting with `prefix` - + We define word characters as alphanumeric and underscore, like in JS. - + Works for MySQL, PostgreSQL, Oracle. For SQLite, _sqlite* version is substituted for this. """ kwargs = {} prefix = _no_diacritics_regexp(unicode_re_escape(prefix)) - # can't use [[:<:]] (word start), + # can't use [[:<:]] (word start), # but we want both `xy` and `(xy` to catch `(xyz)` kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix @@ -250,8 +275,8 @@ def _word_starts_with(name, prefix): def _sqlite_word_starts_with(name, prefix): - """ version of _word_starts_with for SQLite - + """ version of _word_starts_with for SQLite + SQLite in Django uses Python re module """ kwargs = {} @@ -283,7 +308,7 @@ def _get_result_link(match, tag_list): return match.get_absolute_url() else: return reverse('catalogue.views.tagged_object_list', - kwargs={'tags': '/'.join(tag.slug for tag in tag_list + [match])} + kwargs={'tags': '/'.join(tag.url_chunk for tag in tag_list + [match])} ) def _get_result_type(match): @@ -297,12 +322,12 @@ def _get_result_type(match): def find_best_matches(query, user=None): """ Finds a Book, Tag or Bookstub best matching a query. - + Returns a with: - zero elements when nothing is found, - one element when a best result is found, - more then one element on multiple exact matches - + Raises a ValueError on too short a query. """ @@ -352,7 +377,6 @@ def tags_starting_with(request): return HttpResponse('\n'.join(tag.name for tag in _tags_starting_with(prefix, request.user))) - # ==================== # = Shelf management = # ==================== @@ -436,7 +460,7 @@ def download_shelf(request, slug): """" Create a ZIP archive on disk and transmit it in chunks of 8KB, without loading the whole file into memory. A similar approach can - be used for large dynamic PDF files. + be used for large dynamic PDF files. """ shelf = get_object_or_404(models.Tag, slug=slug, category='set') @@ -445,7 +469,7 @@ def download_shelf(request, slug): if form.is_valid(): formats = form.cleaned_data['formats'] if len(formats) == 0: - formats = ['pdf', 'odt', 'txt', 'mp3', 'ogg'] + formats = ['pdf', 'epub', 'odt', 'txt', 'mp3', 'ogg'] # Create a ZIP archive temp = tempfile.TemporaryFile() @@ -455,6 +479,9 @@ def download_shelf(request, slug): if 'pdf' in formats and book.pdf_file: filename = book.pdf_file.path archive.write(filename, str('%s.pdf' % book.slug)) + if 'epub' in formats and book.epub_file: + filename = book.epub_file.path + archive.write(filename, str('%s.epub' % book.slug)) if 'odt' in formats and book.odt_file: filename = book.odt_file.path archive.write(filename, str('%s.odt' % book.slug)) @@ -485,11 +512,13 @@ def shelf_book_formats(request, shelf): """ shelf = get_object_or_404(models.Tag, slug=shelf, category='set') - formats = {'pdf': False, 'odt': False, 'txt': False, 'mp3': False, 'ogg': False} + formats = {'pdf': False, 'epub': False, 'odt': False, 'txt': False, 'mp3': False, 'ogg': False} for book in collect_books(models.Book.tagged.with_all(shelf)): if book.pdf_file: formats['pdf'] = True + if book.epub_file: + formats['epub'] = True if book.odt_file: formats['odt'] = True if book.txt_file: