From 28e7bc26b8ae8f7cee6e8da68a8bd42b7eb1303c Mon Sep 17 00:00:00 2001
From: Jonathan Fischoff <jfischoff@imvu.com>
Date: Mon, 17 Jun 2013 14:24:50 -0700
Subject: [PATCH] Adding a ToTypedContent constraint to yesodMiddleware for
 response logging, etc.

---
 yesod-core/Yesod/Core/Class/Yesod.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/yesod-core/Yesod/Core/Class/Yesod.hs b/yesod-core/Yesod/Core/Class/Yesod.hs
index 1286caee..61b5d939 100644
--- a/yesod-core/Yesod/Core/Class/Yesod.hs
+++ b/yesod-core/Yesod/Core/Class/Yesod.hs
@@ -266,7 +266,7 @@ class RenderRoute site => Yesod site where
     -- Default: the 'defaultYesodMiddleware' function.
     --
     -- Since: 1.1.6
-    yesodMiddleware :: HandlerT site IO res -> HandlerT site IO res
+    yesodMiddleware :: ToTypedContent res => HandlerT site IO res -> HandlerT site IO res
     yesodMiddleware = defaultYesodMiddleware
 
 -- | Default implementation of 'yesodMiddleware'. Adds the response header