From aed19a5f8179d21a33c536b7b40083a6799cb529 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Thu, 8 May 2014 13:24:07 +0800
Subject: [PATCH] add support for ptr to extends struct

---
 column.go | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/column.go b/column.go
index b4aa5cfd..f600719c 100644
--- a/column.go
+++ b/column.go
@@ -123,7 +123,21 @@ func (col *Column) ValueOfV(dataStruct *reflect.Value) (*reflect.Value, error) {
 	} else if len(col.fieldPath) == 2 {
 		parentField := dataStruct.FieldByName(col.fieldPath[0])
 		if parentField.IsValid() {
-			fieldValue = parentField.FieldByName(col.fieldPath[1])
+			if parentField.Kind() == reflect.Struct {
+				fieldValue = parentField.FieldByName(col.fieldPath[1])
+			} else if parentField.Kind() == reflect.Ptr {
+				if parentField.IsNil() {
+					parentField.Set(reflect.New(parentField.Type().Elem()))
+					fieldValue = parentField.Elem().FieldByName(col.fieldPath[1])
+				} else {
+					parentField = parentField.Elem()
+					if parentField.IsValid() {
+						fieldValue = parentField.FieldByName(col.fieldPath[1])
+					} else {
+						err = fmt.Errorf("field  %v is not valid", col.FieldName)
+					}
+				}
+			}
 		} else {
 			err = fmt.Errorf("field  %v is not valid", col.FieldName)
 		}