laravel create trigger migration

1<?php
2
3use Illuminate\Database\Migrations\Migration;
4
5class CreateTrigger extends Migration
6{
7    public function up()
8    {
9        DB::unprepared('
10                CREATE TRIGGER tr_after_main_insert AFTER INSERT ON `main` FOR EACH ROW
11                    BEGIN
12                        INSERT INTO `test`(`new_id`, `type`, `value`, `created_at`) VALUES (NEW.id, NEW.type, 1, NOW());
13                    END
14                ');
15    }
16
17    public function down()
18    {
19        DB::unprepared('DROP TRIGGER `tr_after_main_insert`');
20    }
21}