From f0b5ced5169c863f2349ec0cd5ea6c765b472a91 Mon Sep 17 00:00:00 2001
From: Tomasz Zielinski <tomasz.zielinski@pyconsultant.eu>
Date: Sun, 29 Jan 2012 22:52:22 +0100
Subject: Fixed a bug where a tag could be duplicated in the URL

---
 askbot/search/state_manager.py     |  8 +++++++-
 askbot/tests/search_state_tests.py | 16 ++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/askbot/search/state_manager.py b/askbot/search/state_manager.py
index 232d64e9..ee46501e 100644
--- a/askbot/search/state_manager.py
+++ b/askbot/search/state_manager.py
@@ -117,7 +117,13 @@ class SearchState(object):
         else:
             self.sort = sort
 
-        self.tags = [t.strip() for t in tags.split(const.TAG_SEP)] if tags else []
+        self.tags = []
+        if tags:
+            for t in tags.split(const.TAG_SEP):
+                tag = t.strip()
+                if tag not in self.tags:
+                    self.tags.append(tag)
+
         self.author = int(author) if author else None
         self.page = int(page) if page else 1
         if self.page == 0:  # in case someone likes jokes :)
diff --git a/askbot/tests/search_state_tests.py b/askbot/tests/search_state_tests.py
index aca989fc..18f5eb36 100644
--- a/askbot/tests/search_state_tests.py
+++ b/askbot/tests/search_state_tests.py
@@ -275,3 +275,19 @@ class SearchStateTests(AskbotTestCase):
         ss = SearchState.get_empty().add_tag('double').add_tag('double')
         self.assertListEqual(['double'], ss.tags)
 
+    def test_prevent_dupped_tags(self):
+        ss = SearchState(
+            scope=None,
+            sort=None,
+            query=None,
+            tags='valid1,dupped,valid2,dupped',
+            author=None,
+            page=None,
+            user_logged_in=False
+        )
+        self.assertEqual(
+            'scope:all/sort:activity-desc/tags:valid1,dupped,valid2/page:1/',
+            ss.query_string()
+        )
+
+
-- 
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