Yii2 事务操作

官网关于Yii2 事务的说明文档

http://www.yiiframework.com/doc-2.0/guide-db-active-record.html

Working with Transactions

There are two ways of using transactions while working with Active Record.

The first way is to explicitly enclose Active Record method calls in a transactional block, like shown below,

$customer = Customer::findOne(123);

Customer::getDb()->transaction(function($db) use ($customer) {
    $customer->id = 200;
    $customer->save();
    // ...other DB operations...
});

// or alternatively

$transaction = Customer::getDb()->beginTransaction();
try {
    $customer->id = 200;
    $customer->save();
    // ...other DB operations...
    $transaction->commit();
} catch(Exception $e) {
    $transaction->rollBack();
    throw $e;
}

The second way is to list the DB operations that require transactional support in the yiidbActiveRecord::transactions() method. For example,

class Customer extends ActiveRecord
{
    public function transactions()
    {
        return [
            'admin' => self::OP_INSERT,
            'api' => self::OP_INSERT | self::OP_UPDATE | self::OP_DELETE,
            // the above is equivalent to the following:
            // 'api' => self::OP_ALL,
        ];
    }
}

The yiidbActiveRecord::transactions() method should return an array whose keys are scenario names and values are the corresponding operations that should be enclosed within transactions. You should use the following constants to refer to different DB operations:

• OP_INSERT: insertion operation performed by insert();
• OP_UPDATE: update operation performed by update();
• OP_DELETE: deletion operation performed by delete().

Use the | operators to concatenate the above constants to indicate multiple operations. You may also use the shortcut constant OP_ALL to refer to all three operations above.

Transactions that are created using this method will be started before calling beforeSave() and will be committed after afterSave() has run.

Yiifans的翻译（权威指南）文档

事务（Transaction）

你可以向下面这样执行一个数据库事务：

$transaction = $connection->beginTransaction();
try {
    $connection->createCommand($sql1)->execute();
     $connection->createCommand($sql2)->execute();
    // ... 执行查询语句  ...
    $transaction->commit();
} catch(Exception $e) {
    $transaction->rollBack();
}

还可以嵌套事务：

// 外层事务
$transaction1 = $connection->beginTransaction();
try {
    $connection->createCommand($sql1)->execute();
 
    // 内层事务
    $transaction2 = $connection->beginTransaction();
    try {
        $connection->createCommand($sql2)->execute();
        $transaction2->commit();
    } catch (Exception $e) {
        $transaction2->rollBack();
    }
 
    $transaction1->commit();
} catch (Exception $e) {
    $transaction1->rollBack();
}

多个sql执行（不同的表ActiveRecord）任意一个无法成功提交都要能回滚， 但这样执行的时候依然插入成功而没有回滚

 SysOrderFeedback正常save， SysOrderFeedbackServer中title必须为string

      $transaction = Yii::$app->db->beginTransaction();
        try {
            $sysOrderFeeback = new commonmodelsSysOrderFeedback();
            $sysOrderFeeback->categ = 1;
            $sysOrderFeeback->ltype = 1;
            $sysOrderFeeback->create_time = 1;
            $sysOrderFeeback->total = 1;
            $sysOrderFeeback->open_remark = 1;
            $sysOrderFeeback->save();
            // ...other DB operations...
            $sysOrderFeedbackServer = new commonmodelsSysOrderFeedbackServer();
            $sysOrderFeedbackServer->fid = 1;
            $sysOrderFeedbackServer->title = 1;
            $sysOrderFeedbackServer->create_time = 1;
            $sysOrderFeedbackServer->save();
            $transaction->commit();
        } catch (Exception $e) {
            $transaction->rollBack();
            throw $e;
        }

 打印：

print_r($sysOrderFeedbackServer->errors);

提示Array ( [title] => Array ( [0] => Title必须是一条字符串。 ) )

开启事务，只要没有commit()即使验证成功的save也保存不了，如下

        $transaction = Yii::$app->db->beginTransaction();
            $sysOrderFeeback = new commonmodelsSysOrderFeedback();
            $sysOrderFeeback->categ = 1;
            $sysOrderFeeback->ltype = 1;
            $sysOrderFeeback->create_time = 1;
            $sysOrderFeeback->total = 1;
            $sysOrderFeeback->open_remark = 1;
            $sysOrderFeeback->save();

 后来改成下下策判断Model->errors 暂时解决问题

$transaction = Yii::$app->db->beginTransaction();
        $sysOrderFeeback = new commonmodelsSysOrderFeedback();
        $sysOrderFeeback->categ = 1;
        $sysOrderFeeback->ltype = 1;
        $sysOrderFeeback->create_time = 1;
        $sysOrderFeeback->total = 1;
        $sysOrderFeeback->open_remark = 1;
        $sysOrderFeeback->save();
        // ...other DB operations...
        $sysOrderFeedbackServer = new commonmodelsSysOrderFeedbackServer();
        $sysOrderFeedbackServer->fid = 1;
        $sysOrderFeedbackServer->title = 1;
        $sysOrderFeedbackServer->create_time = 1;
        $sysOrderFeedbackServer->save();
        if (empty($sysOrderFeeback->errors) && empty($sysOrderFeedbackServer->errors)) {
            $transaction->commit();
            echo 'True';
        } else {
            $transaction->rollBack();
            echo 'false';
        }

跟踪Debug

关于更多的Yii2事务操作（事务级别、事务备份、事务有效性、多主从数据库事务）查看http://www.yiichina.com/doc/guide/2.0/db-dao