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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
use yii\db\Migration;
* Initializes Session tables.
*
* @author Misbahul D Munir <[email protected]>
* @since 2.0.8
class m160313_153426_session_init extends Migration
{
* {@inheritdoc}
public function up()
$dataType = $this->binary();
$tableOptions = null;
switch ($this->db->driverName) {
case 'mysql':
// http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
$tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';
break;
case 'sqlsrv':
case 'mssql':
case 'dblib':
$dataType = $this->text();
}
$this->createTable('{{%session}}', [
'id' => $this->string()->notNull(),
'expire' => $this->integer(),
'data' => $dataType,
'PRIMARY KEY ([[id]])',
], $tableOptions);
public function down()
$this->dropTable('{{%session}}');