yii2 多数据库 事务 跨数据库事务

1.配置：组件配置，db是默认的数据库库连接

'components' => [
       'db' => [
           'class' => 'yii\db\Connection',
           'dsn' => 'mysql:host=localhost;dbname=erp',
           'username' => 'root',
           'password' => 'onfancy',
           'charset' => 'utf8',
        //'tablePrefix' => 'tbl_',   数据表前缀
       ],


    'ebayDb' => [
           'class' => 'yii\db\Connection',
           'dsn' => 'mysql:host=localhost;dbname=erp_ebay',
           'username' => 'root',
           'password' => 'onfancy',
           'charset' => 'utf8',
       ],

配置完成后，创建数据库  erp  erp_ebay

然后创建表：

erp.test

erp_ebay.test

2.创建activeRecord 

namespace myapp\code\core\Erp\Sales\models;
use yii\db\ActiveRecord;

class Erptest extends ActiveRecord
{
    public static function tableName()
        {
          return 'test';
       }
}

上面的代码，getDb默认使用db的配置

php

namespace myapp\code\core\Erp\Sales\models;
use yii\db\ActiveRecord;

class Ebaytest extends ActiveRecord
{
    public static function getDb()
    {
        return \Yii::$app->ebayDb;  // use the "db2" application component
    }

    public static function tableName()
    {
        return 'test';
    }
}

上面的代码：通过getDb获取上面配置的ebayDb的配置

然后就可以使用使用了

$innerTransaction = Yii::$app->db->beginTransaction();
        try {

            $erp_test = new Erptest();
            $erp_test->class = 99;
            $erp_test->age = 99;
            $erp_test->live = 99;
            $erp_test->save();

            $Ebaytest = new Ebaytest();
            $Ebaytest->age = 88;
            $Ebaytest->name = 88;
            $Ebaytest->live = 99;
            $Ebaytest->save();



            $data = Ebaytest::find()->asArray()->all();
            foreach($data as $d){
                var_dump($d);
            }


            $data = Erptest::find()->asArray()->all();
            foreach($data as $d){
                var_dump($d);
            }



            $innerTransaction->commit();
        } catch (Exception $e) {
            $innerTransaction->rollBack();
        }

当第二条插入执行失败，mysql会回滚！