session Transaction Execute sql wrapped in a transaction(abbr as tx), tx will automatic commit if no errors occurred

session_tx.go

@@ -4,6 +4,16 @@
 
 package xorm
 
+// Transaction Execute sql wrapped in a transaction(abbr as tx), tx will automatic commit if no errors occurred
+// Prevent the nested opening of multiple transactions by Engine().Transaction
+// Prevent the problem that "Begin Begin Commit Rollback" cannot be rolled back
+func (session *Session) Transaction(fn func(session *Session) (interface{}, error)) (interface{}, error) {
+	if session.Tx() != nil {
+		return fn(session)
+	}
+	return session.Engine().Transaction(fn)
+}
+
 // Begin a transaction
 func (session *Session) Begin() error {
 	if session.isAutoCommit {