search demo

[wolnelektury.git] / apps / search / views.py

diff --git a/apps/search/views.py b/apps/search/views.py
index fc14b06..d9b2f26 100644 (file)
--- a/apps/search/views.py
+++ b/apps/search/views.py
@@ -1,5 +1,4 @@
 
-
 from django.shortcuts import render_to_response, get_object_or_404
 from django.template import RequestContext
 from django.contrib.auth.decorators import login_required
@@ -9,6 +8,31 @@ from catalogue.utils import get_random_hash
 from catalogue.models import Book, Tag
 from catalogue import forms
 from search import MultiSearch, JVM, SearchResult
+from lucene import StringReader
+
+import enchant
+
+dictionary = enchant.Dict('pl_PL')
+
+
+def did_you_mean(query, tokens):
+    change = {}
+    
+    for t in tokens:
+        print("%s ok? %s, sug: %s" %(t, dictionary.check(t), dictionary.suggest(t)))
+        if not dictionary.check(t):
+            try:
+                change[t] = dictionary.suggest(t)[0]
+            except IndexError:
+                pass
+
+    if change == {}:
+        return None
+
+    for frm, to in change.items():
+        query = query.replace(frm, to)
+        
+    return query
 
 
 def main(request):
@@ -17,15 +41,26 @@ def main(request):
     srch = MultiSearch()
 
     results = None
+    query = None
+    fuzzy = False
     if 'q' in request.GET:
-        toks = srch.get_tokens(request.GET['q'])
-        results = SearchResult.aggregate(srch.search_perfect_book(toks),
-                                         srch.search_perfect_parts(toks),
-                                         srch.search_everywhere(toks))
+        query = request.GET['q']
+        toks = StringReader(query)
+        fuzzy = 'fuzzy' in request.GET
+        if fuzzy:
+            fuzzy = 0.7
+
+
+        results = SearchResult.aggregate(srch.search_perfect_book(toks, fuzzy=fuzzy),
+                                         srch.search_perfect_parts(toks, fuzzy=fuzzy),
+                                         srch.search_everywhere(toks, fuzzy=fuzzy))
         results.sort(reverse=True)
 
         for r in results:
             print r.parts
 
-    return render_to_response('newsearch/search.html', {"results": results},
+    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))