From f145e435c7e6648789b7be6822103901fe45a322 Mon Sep 17 00:00:00 2001
From: Evgeny Persienko <e.persienko@office.ngs.ru>
Date: Fri, 20 Feb 2015 11:37:20 +0600
Subject: [PATCH] Add validating sub structures

---
 binding/binding.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/binding/binding.go b/binding/binding.go
index 81ac3fa5..cff06f88 100644
--- a/binding/binding.go
+++ b/binding/binding.go
@@ -199,6 +199,17 @@ func Validate(obj interface{}, parents ...string) error {
 						return err
 					}
 				}
+			} else {
+				fieldType := field.Type.Kind()
+				if fieldType == reflect.Struct {
+					if reflect.DeepEqual(zero, fieldValue) {
+						continue
+					}
+					err := Validate(fieldValue, field.Name)
+					if err != nil {
+						return err
+					}
+				}
 			}
 		}
 	case reflect.Slice: