Fixed #3749 -- Set the context correctly when using the "filter" template tag.

Thanks, Zak Johnson.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@5052 bcc190cf-cafb-0310-a4f2-bffc1f526a37

AUTHORS

@@ -113,6 +113,7 @@ answer newbie questions, and generally made Django that much better:
     Tom Insam
     Baurzhan Ismagulov <ibr@radix50.net>
     jcrasta@gmail.com
+    Zak Johnson <zakj@nox.cx>
     Michael Josephson <http://www.sdjournal.com/>
     jpellerin@gmail.com
     junzhang.jn@gmail.com

django/template/defaulttags.py

@@ -41,7 +41,10 @@ class FilterNode(Node):
     def render(self, context):
         output = self.nodelist.render(context)
         # apply filters
-        return self.filter_expr.resolve(Context({'var': output}))
+        context.update({'var': output})
+        filtered = self.filter_expr.resolve(context)
+        context.pop()
+        return filtered
 
 class FirstOfNode(Node):
     def __init__(self, vars):

tests/regressiontests/templates/tests.py

@@ -259,6 +259,7 @@ class Templates(unittest.TestCase):
             'filter01': ('{% filter upper %}{% endfilter %}', {}, ''),
             'filter02': ('{% filter upper %}django{% endfilter %}', {}, 'DJANGO'),
             'filter03': ('{% filter upper|lower %}django{% endfilter %}', {}, 'django'),
+            'filter04': ('{% filter cut:remove %}djangospam{% endfilter %}', {'remove': 'spam'}, 'django'),
 
             ### FIRSTOF TAG ###########################################################
             'firstof01': ('{% firstof a b c %}', {'a':0,'b':0,'c':0}, ''),