Allow temporarily disable default transaction

callbacks/transaction.go

@@ -5,15 +5,18 @@ import (
 )
 
 func BeginTransaction(db *gorm.DB) {
+	if !db.Config.SkipDefaultTransaction {
 		if tx := db.Begin(); tx.Error == nil {
 			db.Statement.ConnPool = tx.Statement.ConnPool
 			db.InstanceSet("gorm:started_transaction", true)
 		} else {
 			tx.Error = nil
 		}
+	}
 }
 
 func CommitOrRollbackTransaction(db *gorm.DB) {
+	if !db.Config.SkipDefaultTransaction {
 		if _, ok := db.InstanceGet("gorm:started_transaction"); ok {
 			if db.Error == nil {
 				db.Commit()
@@ -22,4 +25,5 @@ func CommitOrRollbackTransaction(db *gorm.DB) {
 			}
 			db.Statement.ConnPool = db.ConnPool
 		}
+	}
 }

gorm.go

@@ -60,6 +60,7 @@ type Session struct {
 	DryRun                 bool
 	PrepareStmt            bool
 	WithConditions         bool
+	SkipDefaultTransaction bool
 	Context                context.Context
 	Logger                 logger.Interface
 	NowFunc                func() time.Time
@@ -145,6 +146,10 @@ func (db *DB) Session(config *Session) *DB {
 		}
 	)
 
+	if config.SkipDefaultTransaction {
+		tx.Config.SkipDefaultTransaction = true
+	}
+
 	if config.Context != nil {
 		tx.Statement = tx.Statement.clone()
 		tx.Statement.DB = tx