From 0e0c83fabc77e2888e26c56df9acda7a5c839530 Mon Sep 17 00:00:00 2001
From: Christopher Lambacher <chris@kateandchris.net>
Date: Fri, 27 Apr 2012 11:06:59 -0400
Subject: Don't add a ? to url if query string is empty.

---
 pyramid/tests/test_url.py | 17 +++++++++++++++++
 pyramid/url.py            |  8 ++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/pyramid/tests/test_url.py b/pyramid/tests/test_url.py
index 0dff1e648..50deb63f3 100644
--- a/pyramid/tests/test_url.py
+++ b/pyramid/tests/test_url.py
@@ -113,6 +113,14 @@ class TestURLMethodsMixin(unittest.TestCase):
         self.assertEqual(result,
             'http://example.com:5432/context/a?a=hi+there&b=La+Pe%C3%B1a')
 
+    def test_resource_url_with_query_empty(self):
+        request = self._makeOne()
+        self._registerResourceURL(request.registry)
+        context = DummyContext()
+        result = request.resource_url(context, 'a', query=[])
+        self.assertEqual(result,
+            'http://example.com:5432/context/a')
+
     def test_resource_url_anchor_is_after_root_when_no_elements(self):
         request = self._makeOne()
         self._registerResourceURL(request.registry)
@@ -334,6 +342,15 @@ class TestURLMethodsMixin(unittest.TestCase):
         self.assertEqual(result,
                          'http://example.com:5432/1/2/3?q=1')
 
+    def test_route_url_with_empty_query(self):
+        from pyramid.interfaces import IRoutesMapper
+        request = self._makeOne()
+        mapper = DummyRoutesMapper(route=DummyRoute('/1/2/3'))
+        request.registry.registerUtility(mapper, IRoutesMapper)
+        result = request.route_url('flub', _query={})
+        self.assertEqual(result,
+                         'http://example.com:5432/1/2/3')
+
     def test_route_url_with_app_url(self):
         from pyramid.interfaces import IRoutesMapper
         request = self._makeOne()
diff --git a/pyramid/url.py b/pyramid/url.py
index 022867967..dd83bb631 100644
--- a/pyramid/url.py
+++ b/pyramid/url.py
@@ -218,7 +218,9 @@ class URLMethodsMixin(object):
         port = None
 
         if '_query' in kw:
-            qs = '?' + urlencode(kw.pop('_query'), doseq=True)
+            query = kw.pop('_query')
+            if query:
+                qs = '?' + urlencode(query, doseq=True)
 
         if '_anchor' in kw:
             anchor = kw.pop('_anchor')
@@ -494,7 +496,9 @@ class URLMethodsMixin(object):
         anchor = ''
 
         if 'query' in kw:
-            qs = '?' + urlencode(kw['query'], doseq=True)
+            query = kw['query']
+            if query:
+                qs = '?' + urlencode(query, doseq=True)
 
         if 'anchor' in kw:
             anchor = kw['anchor']
-- 
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