Add getter setter for scope

scope.go

@@ -13,17 +13,17 @@ import (
 )
 
 type Scope struct {
-	Value              interface{}
+	Value   interface{}
-	Search             *search
+	Search  *search
-	Sql                string
+	Sql     string
-	SqlVars            []interface{}
+	SqlVars []interface{}
-	db                 *DB
+	db      *DB
-	startedTransaction bool
+	_values map[string]interface{}
 }
 
 func (db *DB) NewScope(value interface{}) *Scope {
 	db.Value = value
-	return &Scope{db: db, Search: db.search, Value: value}
+	return &Scope{db: db, Search: db.search, Value: value, _values: map[string]interface{}{}}
 }
 
 func (scope *Scope) callCallbacks(funcs []*func(s *Scope)) *Scope {
@@ -271,6 +271,15 @@ func (scope *Scope) Exec() {
 	}
 }
 
+func (scope *Scope) Get(name string) (value interface{}, ok bool) {
+	value, ok = scope._values[name]
+	return
+}
+
+func (scope *Scope) Set(name string, value interface{}) {
+	scope._values[name] = value
+}
+
 func (scope *Scope) Trace(t time.Time) {
 	if len(scope.Sql) > 0 {
 		scope.db.slog(scope.Sql, t, scope.SqlVars...)
@@ -281,14 +290,14 @@ func (scope *Scope) Begin() *Scope {
 	if db, ok := scope.DB().(sqlDb); ok {
 		if tx, err := db.Begin(); err == nil {
 			scope.db.db = interface{}(tx).(sqlCommon)
-			scope.startedTransaction = true
+			scope.Set("gorm:started_transaction", true)
 		}
 	}
 	return scope
 }
 
 func (scope *Scope) CommitOrRollback() *Scope {
-	if scope.startedTransaction {
+	if _, ok := scope.Get("gorm:started_transaction"); ok {
 		if db, ok := scope.db.db.(sqlTx); ok {
 			if scope.HasError() {
 				db.Rollback()