From dd0d4d931f0d6b52e3c8df75496b0a1aaa5667e6 Mon Sep 17 00:00:00 2001
From: Jinzhu <wosmvp@gmail.com>
Date: Fri, 14 Aug 2015 14:53:26 +0800
Subject: [PATCH] Add errorsInterface

---
 errors.go |  4 ++++
 main.go   | 15 ++++++++++-----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/errors.go b/errors.go
index f4743b0a..23fedd7f 100644
--- a/errors.go
+++ b/errors.go
@@ -13,6 +13,10 @@ var (
 	CantStartTransaction = errors.New("can't start transaction")
 )
 
+type errorsInterface interface {
+	GetErrors() []error
+}
+
 type Errors struct {
 	errors []error
 }
diff --git a/main.go b/main.go
index 8457dc96..d1898142 100644
--- a/main.go
+++ b/main.go
@@ -518,7 +518,11 @@ func (s *DB) AddError(err error) error {
 				s.log(err)
 			}
 
-			err = Errors{errors: append(s.GetErrors(), err)}
+			if e, ok := err.(errorsInterface); ok {
+				err = Errors{errors: append(s.GetErrors(), e.GetErrors()...)}
+			} else {
+				err = Errors{errors: append(s.GetErrors(), err)}
+			}
 		}
 
 		s.Error = err
@@ -526,10 +530,11 @@ func (s *DB) AddError(err error) error {
 	return err
 }
 
-func (s *DB) GetErrors() []error {
-	if errs, ok := s.Error.(Errors); ok {
-		return errs.errors
-	} else {
+func (s *DB) GetErrors() (errors []error) {
+	if errs, ok := s.Error.(errorsInterface); ok {
+		return errs.GetErrors()
+	} else if s.Error != nil {
 		return []error{s.Error}
 	}
+	return
 }