How to work with transactions in yii2?

Question

Yii

How to make a transaction with two tables? In this case, you first need to save to one table, then take the ID and save to another table.
This is the code that doesn't work:

Test1::getDb()->transaction(function($db) use ($model2, $model2)  {
           Test2::getDb()->transaction(function($db) use ($model, $model2)  {
                    $model->save();
                    $model2->save();
           });
});

Answer 1

Start one transaction.