From dcdf7b92f457b27459a8a58e3e5a9770b02a9ad9 Mon Sep 17 00:00:00 2001
From: Manu Mtz-Almeida <manu.valladolid@gmail.com>
Date: Tue, 7 Apr 2015 18:52:33 +0200
Subject: [PATCH] Error middleware does not write if the it is already written

---
 logger.go | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/logger.go b/logger.go
index 4418ef89..0e02600d 100644
--- a/logger.go
+++ b/logger.go
@@ -29,10 +29,11 @@ func ErrorLoggerT(typ uint32) HandlerFunc {
 	return func(c *Context) {
 		c.Next()
 
-		errs := c.Errors.ByType(typ)
-		if len(errs) > 0 {
-			// -1 status code = do not change current one
-			c.JSON(-1, c.Errors)
+		if !c.Writer.Written() {
+			errs := c.Errors.ByType(typ)
+			if len(errs) > 0 {
+				c.JSON(-1, c.Errors)
+			}
 		}
 	}
 }