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Directory : /var/www/vhosts/lautnusantara.com/httpdocs/mis/system/Database/ |
<?php
/**
* This file is part of CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
namespace CodeIgniter\Database;
use Config\Database;
/**
* Class Migration
*/
abstract class Migration
{
/**
* The name of the database group to use.
*
* @var string
*/
protected $DBGroup;
/**
* Database Connection instance
*
* @var ConnectionInterface
*/
protected $db;
/**
* Database Forge instance.
*
* @var Forge
*/
protected $forge;
/**
* Constructor.
*
* @param Forge $forge
*/
public function __construct(?Forge $forge = null)
{
$this->forge = $forge ?? Database::forge($this->DBGroup ?? config('Database')->defaultGroup);
$this->db = $this->forge->getConnection();
}
/**
* Returns the database group name this migration uses.
*
* @return string
*/
public function getDBGroup(): ?string
{
return $this->DBGroup;
}
/**
* Perform a migration step.
*/
abstract public function up();
/**
* Revert a migration step.
*/
abstract public function down();
}