X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/919a5d574aac85d55b6cfd17f0a81dd5ff56265a..14129c2a4e9b94274297efc32752f64a6a2b77a7:/apps/search/views.py diff --git a/apps/search/views.py b/apps/search/views.py index ff831f06b..cf008705d 100644 --- a/apps/search/views.py +++ b/apps/search/views.py @@ -1,28 +1,40 @@ # -*- coding: utf-8 -*- +from django.conf import settings from django.shortcuts import render_to_response, get_object_or_404 from django.template import RequestContext from django.contrib.auth.decorators import login_required from django.views.decorators import cache +from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect +from django.utils.translation import ugettext as _ from catalogue.utils import get_random_hash -from catalogue.models import Book, Tag, TAG_CATEGORIES +from catalogue.models import Book, Tag, Fragment from catalogue.fields import dumps from catalogue.views import JSONResponse -from catalogue import forms -from search import MultiSearch, JVM, SearchResult +from search import Search, JVM, SearchResult from lucene import StringReader - +from suggest.forms import PublishingSuggestForm +import re import enchant dictionary = enchant.Dict('pl_PL') +def match_word_re(word): + if 'sqlite' in settings.DATABASES['default']['ENGINE']: + return r"\b%s\b" % word + elif 'mysql' in settings.DATABASES['default']['ENGINE']: + return "[[:<:]]%s[[:>:]]" % word + + def did_you_mean(query, tokens): change = {} - # sprawdzić, czy słowo nie jest aby autorem - proste szukanie termu w author! for t in tokens: - print("%s ok? %s, sug: %s" %(t, dictionary.check(t), dictionary.suggest(t))) + authors = Tag.objects.filter(category='author', name__iregex=match_word_re(t)) + if len(authors) > 0: + continue + if not dictionary.check(t): try: change[t] = dictionary.suggest(t)[0] @@ -38,19 +50,12 @@ def did_you_mean(query, tokens): return query -def category_name(category): - try: - return filter(lambda c: c[0] == category, TAG_CATEGORIES)[0][1].encode('utf-8') - except IndexError: - raise KeyError("No category %s" % category) - - def hint(request): prefix = request.GET.get('term', '') if len(prefix) < 2: - return JSONResponse(dumps(None)) + return JSONResponse([]) JVM.attachCurrentThread() - s = MultiSearch() + s = Search() hint = s.hint() try: @@ -71,33 +76,21 @@ def hint(request): return JSONResponse( [{'label': t.name, - 'category': category_name(t.category), + 'category': _(t.category), 'id': t.id, 'url': t.get_absolute_url()} for t in tags] + \ [{'label': b.title, - 'category': category_name('book'), + 'category': _('book'), 'id': b.id, 'url': b.get_absolute_url()} for b in books]) -def foo(s, q, tag_list=None): - hint = s.hint() - try: - tag_list = Tag.get_tag_list(tag_list) - hint.tags(tag_list) - except: - tag_list = None - - q = StringReader(q) - return (q, hint) - - def main(request): results = {} JVM.attachCurrentThread() # where to put this? - srch = MultiSearch() + srch = Search() results = None query = None @@ -105,30 +98,107 @@ def main(request): if 'q' in request.GET: tags = request.GET.get('tags', '') + query = request.GET['q'] + book_id = request.GET.get('book', None) + book = None + if book_id is not None: + book = get_object_or_404(Book, id=book_id) + hint = srch.hint() try: tag_list = Tag.get_tag_list(tags) except: tag_list = [] + if len(query) < 2: + return render_to_response('catalogue/search_too_short.html', {'tags': tag_list, 'prefix': query}, + context_instance=RequestContext(request)) + hint.tags(tag_list) + if book: + hint.books(book) - query = request.GET['q'] toks = StringReader(query) + tokens_cache = {} fuzzy = 'fuzzy' in request.GET if fuzzy: fuzzy = 0.7 - results = SearchResult.aggregate(srch.search_perfect_book(toks, fuzzy=fuzzy, hint=hint), - srch.search_perfect_parts(toks, fuzzy=fuzzy, hint=hint), - srch.search_everywhere(toks, fuzzy=fuzzy, hint=hint)) + author_results = srch.search_phrase(toks, 'authors', fuzzy=fuzzy, tokens_cache=tokens_cache) + title_results = srch.search_phrase(toks, 'title', fuzzy=fuzzy, tokens_cache=tokens_cache) + + # 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 = srch.search_some(toks, ['authors', 'title', 'tags'], fuzzy=fuzzy, tokens_cache=tokens_cache) + author_title_rest = [] + for b in author_title_mixed: + bks = filter(lambda ba: ba.book_id == b.book_id, author_results + title_results) + for b2 in bks: + b2.boost *= 1.1 + if bks 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( + srch.search_phrase(toks, 'content', fuzzy=fuzzy, tokens_cache=tokens_cache, snippets=True, book=False, slop=4), + srch.search_some(toks, ['content'], tokens_cache=tokens_cache, snippets=True, book=False)) + + everywhere = srch.search_everywhere(toks, fuzzy=fuzzy, tokens_cache=tokens_cache) + + 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 + return False + return f + f = already_found(author_results + title_results + text_phrase) + everywhere = filter(lambda x: not f(x), everywhere) + + author_results = SearchResult.aggregate(author_results) + title_results = SearchResult.aggregate(title_results) + + everywhere = SearchResult.aggregate(everywhere, author_title_rest) + + for res in [author_results, title_results, text_phrase, everywhere]: + res.sort(reverse=True) + for r in res: + for h in r.hits: + h['snippets'] = map(lambda s: + re.subn(r"(^[ \t\n]+|[ \t\n]+$)", u"", + re.subn(r"[ \t\n]*\n[ \t\n]*", u"\n", s)[0])[0], h['snippets']) + + suggestion = did_you_mean(query, srch.get_tokens(toks, field="SIMPLE")) + print "dym? %s" % repr(suggestion).encode('utf-8') + + results = author_results + title_results + text_phrase + everywhere results.sort(reverse=True) - - for r in results: - print r.hits - - return render_to_response('newsearch/search.html', {'results': results, - 'did_you_mean': (query is not None) and - did_you_mean(query, srch.get_tokens(query, field='SIMPLE')), - 'fuzzy': fuzzy}, - context_instance=RequestContext(request)) + + 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(frag.get_absolute_url()) + return HttpResponseRedirect(results[0].book.get_absolute_url()) + elif len(results) == 0: + form = PublishingSuggestForm(initial={"books": query + ", "}) + return render_to_response('catalogue/search_no_hits.html', + {'tags': tag_list, + 'prefix': query, + "form": form, + 'did_you_mean': suggestion}, + context_instance=RequestContext(request)) + + return render_to_response('catalogue/search_multiple_hits.html', + {'tags': tag_list, + 'prefix': query, + 'results': { 'author': author_results, + 'title': title_results, + 'content': text_phrase, + 'other': everywhere}, + 'did_you_mean': suggestion}, + context_instance=RequestContext(request))