X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/ae60b2a3949e96357477cc04f90fd0873cee8a92..b2f4ade206d7b14e14cd902eddd990e84eb6552f:/src/search/views.py diff --git a/src/search/views.py b/src/search/views.py index c6759ea76..4d792e439 100644 --- a/src/search/views.py +++ b/src/search/views.py @@ -1,22 +1,22 @@ -# -*- coding: utf-8 -*- # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later. # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # from django.conf import settings -from django.shortcuts import render_to_response -from django.template import RequestContext +from django.http.response import HttpResponseRedirect +from django.shortcuts import render from django.views.decorators import cache from django.http import HttpResponse, JsonResponse -from django.utils.translation import ugettext as _ -from catalogue.utils import split_tags -from catalogue.models import Book -from pdcounter.models import Author as PDCounterAuthor, BookStub as PDCounterBook -from search.index import Search, SearchResult +from catalogue.models import Book, Tag +from pdcounter.models import Author +from picture.models import Picture +from search.index import Search, SearchResult, PictureResult from suggest.forms import PublishingSuggestForm import re import json +from wolnelektury.utils import re_escape + def match_word_re(word): if 'sqlite' in settings.DATABASES['default']['ENGINE']: @@ -25,11 +25,11 @@ def match_word_re(word): return "[[:<:]]%s[[:>:]]" % word -query_syntax_chars = re.compile(r"[\\/*:(){}]") +query_syntax_chars = re.compile(r"[\\/*:(){}?.[\]+]") def remove_query_syntax_chars(query, replace=' '): - return query_syntax_chars.sub(' ', query) + return query_syntax_chars.sub(replace, query) def did_you_mean(query, tokens): @@ -64,63 +64,36 @@ def hint(request): if len(prefix) < 2: return JsonResponse([], safe=False) - prefix = remove_query_syntax_chars(prefix) - - search = Search() - # tagi beda ograniczac tutaj - # ale tagi moga byc na ksiazce i na fragmentach - # jezeli tagi dot tylko ksiazki, to wazne zeby te nowe byly w tej samej ksiazce - # jesli zas dotycza themes, to wazne, zeby byly w tym samym fragmencie. - - def is_dupe(tag): - if isinstance(tag, PDCounterAuthor): - if filter(lambda t: t.slug == tag.slug and t != tag, tags): - return True - elif isinstance(tag, PDCounterBook): - if filter(lambda b: b.slug == tag.slug, tags): - return True - return False - - def category_name(c): - if c.startswith('pd_'): - c = c[len('pd_'):] - return _(c) + prefix = re_escape(' '.join(remove_query_syntax_chars(prefix).split())) try: limit = int(request.GET.get('max', '')) except ValueError: - limit = -1 + limit = 20 else: if limit < 1: - limit = -1 - - data = [] - - tags = search.hint_tags(prefix, pdcounter=True) - tags = filter(lambda t: not is_dupe(t), tags) - for t in tags: - if not limit: - break - limit -= 1 - data.append({ - 'label': t.name, - 'category': category_name(t.category), - 'id': t.id, - 'url': t.get_absolute_url() - }) - if limit: - books = search.hint_books(prefix) - for b in books: - if not limit: - break - limit -= 1 - data.append({ + limit = 20 + + authors = Tag.objects.filter( + category='author', name_pl__iregex='\m' + prefix).only('name', 'id', 'slug', 'category') + data = [ + { + 'label': author.name, + 'id': author.id, + 'url': author.get_absolute_url(), + } + for author in authors[:limit] + ] + if len(data) < limit: + data += [ + { 'label': b.title, - 'category': _('book'), + 'author': b.author_unicode(), 'id': b.id, 'url': b.get_absolute_url() - }) - + } + for b in Book.objects.filter(findable=True, title__iregex='\m' + prefix)[:limit-len(data)] + ] callback = request.GET.get('callback', None) if callback: return HttpResponse("%s(%s);" % (callback, json.dumps(data)), @@ -132,126 +105,136 @@ def hint(request): @cache.never_cache def main(request): query = request.GET.get('q', '') - if len(query) < 2: - return render_to_response( - 'catalogue/search_too_short.html', {'prefix': query}, - context_instance=RequestContext(request)) + return render( + request, 'catalogue/search_too_short.html', + {'prefix': query}) + elif len(query) > 256: + return render( + request, 'catalogue/search_too_long.html', + {'prefix': query}) + + query = prepare_query(query) + pd_authors = search_pd_authors(query) + books = search_books(query) + pictures = search_pictures(query) + suggestion = '' + + if not (books or pictures or pd_authors): + form = PublishingSuggestForm(initial={"books": query + ", "}) + return render( + request, + 'catalogue/search_no_hits.html', + { + 'form': form, + 'did_you_mean': suggestion + }) - query = remove_query_syntax_chars(query) - + if not (books or pictures) and len(pd_authors) == 1: + return HttpResponseRedirect(pd_authors[0].get_absolute_url()) + + return render( + request, + 'catalogue/search_multiple_hits.html', + { + 'pd_authors': pd_authors, + 'books': books, + 'pictures': pictures, + 'did_you_mean': suggestion + }) + +def search_books(query): search = Search() + results_parts = [] + search_fields = [] + words = query.split() + fieldsets = ( + (['authors', 'authors_nonstem'], True), + (['title', 'title_nonstem'], True), + (['metadata', 'metadata_nonstem'], True), + (['text', 'text_nonstem', 'themes_pl', 'themes_pl_nonstem'], False), + ) + for fields, is_book in fieldsets: + search_fields += fields + results_parts.append(search.search_words(words, search_fields, required=fields, book=is_book)) + results = [] + ids_results = {} + for results_part in results_parts: + for result in sorted(SearchResult.aggregate(results_part), reverse=True): + book_id = result.book_id + if book_id in ids_results: + ids_results[book_id].merge(result) + else: + results.append(result) + ids_results[book_id] = result + descendant_ids = set( + Book.objects.filter(id__in=ids_results, ancestor__in=ids_results).values_list('id', flat=True)) + results = [result for result in results if result.book_id not in descendant_ids] + for result in results: + search.get_snippets(result, query, num=3) - theme_terms = search.index.analyze(text=query, field="themes_pl") \ - + search.index.analyze(text=query, field="themes") - - # change hints - tags = search.hint_tags(query, pdcounter=True, prefix=False) - tags = split_tags(tags) - - author_results = search.search_phrase(query, 'authors', book=True) - translator_results = search.search_phrase(query, 'translators', book=True) - - title_results = search.search_phrase(query, 'title', book=True) - - # Boost main author/title results with mixed search, and save some of its results for end of list. - # boost author, title results - author_title_mixed = search.search_some(query, ['authors', 'translators', 'title', 'tags'], query_terms=theme_terms) - author_title_rest = [] - - for b in author_title_mixed: - also_in_mixed = filter(lambda ba: ba.book_id == b.book_id, author_results + translator_results + title_results) - for b2 in also_in_mixed: - b2.boost *= 1.1 - if also_in_mixed is []: - author_title_rest.append(b) - - # Do a phrase search but a term search as well - this can give us better snippets then search_everywhere, - # Because the query is using only one field. - text_phrase = SearchResult.aggregate( - search.search_phrase(query, 'text', snippets=True, book=False), - search.search_some(query, ['text'], snippets=True, book=False, query_terms=theme_terms)) - - everywhere = search.search_everywhere(query, query_terms=theme_terms) - - def already_found(results): - def f(e): - for r in results: - if e.book_id == r.book_id: - e.boost = 0.9 - results.append(e) - return True + def ensure_exists(r): + try: + return r.book + except Book.DoesNotExist: return False - return f - f = already_found(author_results + translator_results + title_results + text_phrase) - everywhere = filter(lambda x: not f(x), everywhere) - author_results = SearchResult.aggregate(author_results) - translator_results = SearchResult.aggregate(translator_results) - title_results = SearchResult.aggregate(title_results) + results = filter(ensure_exists, results) + return results - everywhere = SearchResult.aggregate(everywhere, author_title_rest) - for field, res in [('authors', author_results), - ('translators', translator_results), - ('title', title_results), - ('text', text_phrase), - ('text', everywhere)]: - res.sort(reverse=True) - for r in res: - search.get_snippets(r, query, field, 3) - - suggestion = u'' +def search_pictures(query): + search = Search() + results_parts = [] + search_fields = [] + words = query.split() + fieldsets = ( + (['authors', 'authors_nonstem'], True), + (['title', 'title_nonstem'], True), + (['metadata', 'metadata_nonstem'], True), + (['themes_pl', 'themes_pl_nonstem'], False), + ) + for fields, is_book in fieldsets: + search_fields += fields + results_parts.append(search.search_words(words, search_fields, required=fields, book=is_book, picture=True)) + results = [] + ids_results = {} + for results_part in results_parts: + for result in sorted(PictureResult.aggregate(results_part), reverse=True): + picture_id = result.picture_id + if picture_id in ids_results: + ids_results[picture_id].merge(result) + else: + results.append(result) + ids_results[picture_id] = result def ensure_exists(r): try: - return r.book - except Book.DoesNotExist: + return r.picture + except Picture.DoesNotExist: return False - author_results = filter(ensure_exists, author_results) - translator_results = filter(ensure_exists, translator_results) - title_results = filter(ensure_exists, title_results) - text_phrase = filter(ensure_exists, text_phrase) - everywhere = filter(ensure_exists, everywhere) - - results = author_results + translator_results + title_results + text_phrase + everywhere - # ensure books do exists & sort them - for res in (author_results, translator_results, title_results, text_phrase, everywhere): - res.sort(reverse=True) - - # We don't want to redirect to book text, but rather display result page even with one result. - # if len(results) == 1: - # fragment_hits = filter(lambda h: 'fragment' in h, results[0].hits) - # if len(fragment_hits) == 1: - # #anchor = fragment_hits[0]['fragment'] - # #frag = Fragment.objects.get(anchor=anchor) - # return HttpResponseRedirect(fragment_hits[0]['fragment'].get_absolute_url()) - # return HttpResponseRedirect(results[0].book.get_absolute_url()) - if len(results) == 0: - form = PublishingSuggestForm(initial={"books": query + ", "}) - return render_to_response( - 'catalogue/search_no_hits.html', - { - 'tags': tags, - 'prefix': query, - 'form': form, - 'did_you_mean': suggestion - }, - context_instance=RequestContext(request)) + results = filter(ensure_exists, results) + return results - return render_to_response( - 'catalogue/search_multiple_hits.html', - { - 'tags': tags, - 'prefix': query, - 'results': { - 'author': author_results, - 'translator': translator_results, - 'title': title_results, - 'content': text_phrase, - 'other': everywhere - }, - 'did_you_mean': suggestion - }, - context_instance=RequestContext(request)) + +def search_pd_authors(query): + pd_authors = Author.objects.filter(name__icontains=query) + existing_slugs = Tag.objects.filter( + category='author', slug__in=list(pd_authors.values_list('slug', flat=True))) \ + .values_list('slug', flat=True) + pd_authors = pd_authors.exclude(slug__in=existing_slugs) + return pd_authors + + +def prepare_query(query): + query = ' '.join(query.split()) + # filter out private use characters + import unicodedata + query = ''.join(ch for ch in query if unicodedata.category(ch) != 'Co') + query = remove_query_syntax_chars(query) + + words = query.split() + if len(words) > 10: + query = ' '.join(words[:10]) + return query