From b34b62e9545e4c8a887c4ea54203082fb6ecec42 Mon Sep 17 00:00:00 2001
From: Marcin Koziej <marcin.koziej@nowoczesnapolska.org.pl>
Date: Wed, 21 Nov 2012 11:03:17 +0100
Subject: [PATCH] Filter some search characters which make Solr too unhappy.

---
 apps/search/views.py | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/apps/search/views.py b/apps/search/views.py
index 2109a7398..9a0b469a1 100644
--- a/apps/search/views.py
+++ b/apps/search/views.py
@@ -3,7 +3,6 @@
 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 _
@@ -13,9 +12,7 @@ from catalogue.models import Book, Tag, Fragment
 from pdcounter.models import Author as PDCounterAuthor, BookStub as PDCounterBook
 from catalogue.views import JSONResponse
 from search import Search, SearchResult
-from lucene import StringReader
 from suggest.forms import PublishingSuggestForm
-from time import sleep
 import re
 #import enchant
 import json
@@ -28,6 +25,13 @@ def match_word_re(word):
         return "[[:<:]]%s[[:>:]]" % word
 
 
+query_syntax_chars = re.compile(r"[\\/*:(){}]")
+
+
+def remove_query_syntax_chars(query, replace=' '):
+    return query_syntax_chars.sub(' ', query)
+
+
 def did_you_mean(query, tokens):
     return query
     # change = {}
@@ -59,6 +63,8 @@ def hint(request):
     if len(prefix) < 2:
         return JSONResponse([])
 
+    prefix = remove_query_syntax_chars(prefix)
+
     search = Search()
     # tagi beda ograniczac tutaj
     # ale tagi moga byc na ksiazce i na fragmentach
@@ -114,6 +120,9 @@ def main(request):
         return render_to_response('catalogue/search_too_short.html',
                                   {'prefix': query},
             context_instance=RequestContext(request))
+
+    query = remove_query_syntax_chars(query)
+    
     search = Search()
 
     theme_terms = search.index.analyze(text=query, field="themes_pl") \
@@ -191,7 +200,8 @@ def main(request):
 
     results = author_results + translator_results + title_results + text_phrase + everywhere
     # ensure books do exists & sort them
-    results.sort(reverse=True)
+    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:
-- 
2.20.1