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72 lines
1.4 KiB
72 lines
1.4 KiB
<?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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