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