From 0e369e6df83b5ecbf94c17b3f9ff9b444a4084ca Mon Sep 17 00:00:00 2001
From: BorisBorshevsky <BorisBorshevsky@gmail.com>
Date: Wed, 13 Dec 2017 15:27:32 +0200
Subject: [PATCH] fix bug

---
 router.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/router.go b/router.go
index 2f5d2eae..11cb4aa8 100644
--- a/router.go
+++ b/router.go
@@ -201,9 +201,12 @@ func (p *ControllerRegister) addWithMethodParams(pattern string, c ControllerInt
 
 		numOfFields := elemVal.NumField()
 		for i := 0; i < numOfFields; i++ {
-			fieldVal := elemVal.Field(i)
 			fieldType := elemType.Field(i)
-			execElem.FieldByName(fieldType.Name).Set(fieldVal)
+
+			if execElem.FieldByName(fieldType.Name).CanSet() {
+				fieldVal := elemVal.Field(i)
+				execElem.FieldByName(fieldType.Name).Set(fieldVal)
+			}
 		}
 
 		return execController