Ticket #13167: 13167_iffix.diff

django/template/defaulttags.py

@@ -241 +241 @@
             yield node
 
     def render(self, context):
-        if self.var.eval(context):
+        try:
+            val = self.var.eval(context)
+        except VariableDoesNotExist:
+            val = None
+
+        if val:
             return self.nodelist_true.render(context)
         else:
             return self.nodelist_false.render(context)