From aa53b887d111aca141682258f85d279139f11079 Mon Sep 17 00:00:00 2001
From: Ismael Ambrosi <ismaambrosi@gmail.com>
Date: Sun, 11 Mar 2012 16:56:20 -0300
Subject: [PATCH] Sets _format attribute only if it wasn't set previously by
 the user

---
 src/Symfony/Bundle/FrameworkBundle/HttpKernel.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/HttpKernel.php b/src/Symfony/Bundle/FrameworkBundle/HttpKernel.php
index fe44fe0131af..6f827b9e4801 100644
--- a/src/Symfony/Bundle/FrameworkBundle/HttpKernel.php
+++ b/src/Symfony/Bundle/FrameworkBundle/HttpKernel.php
@@ -133,7 +133,11 @@ public function render($controller, array $options = array())
             }
         } else {
             $options['attributes']['_controller'] = $controller;
-            $options['attributes']['_format'] = $request->getRequestFormat();
+
+            if (!isset($options['attributes']['_format'])) {
+                $options['attributes']['_format'] = $request->getRequestFormat();
+            }
+
             $options['attributes']['_route'] = '_internal';
             $subRequest = $request->duplicate($options['query'], null, $options['attributes']);
         }