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<?php
/**
* Spiral Framework.
*
* @license MIT
* @author Anton Titov (Wolfy-J)
*/
declare(strict_types=1);
namespace Cycle\Migrations\Operation\ForeignKey;
use Cycle\Migrations\Operation\AbstractOperation;
abstract class ForeignKey extends AbstractOperation
{
* Some options has set of aliases.
* @var array
protected $aliases = [
'onDelete' => ['delete'],
'onUpdate' => ['update'],
];
* Column foreign key associated to.
protected $columns = [];
* @param string $table
* @param array $columns
public function __construct(string $table, array $columns)
parent::__construct($table);
$this->columns = $columns;
}
* @return string
public function columnNames(): string
return implode(', ', $this->columns);