[yii2] How to migrate from PHP Rbac to DB Rbac

RbacMigration.php

<?php

namespace console\controllers;

use Yii;
use yii\console\Controller;

/**
 * I needed to migrate from files-based RBAC to db-based RBAC, here's how I've done it
 *
 * - Before executing the migration, rename your old `authManager` component to `authManagerPhp`
 * - Add the new `authManager` component as follow:
 *      'authManager' => [
 *          'class' => \yii\rbac\DbManager::class,
 *          // 'cache' => 'cache',
 *      ],
 * - Update rules mapping in $rulesMapping
 * - Run ./yii migrate-rbac/to-db
 * - Uncomment the `cache` property in the freshly created authManager
 * - Test your app
 *
 *
 * If anything goes wrong, run `./yii migrate/down 4 --migration-path=vendor/yiisoft/yii2/rbac/migrations`
 * to drop Rbac db migrations before trying again
 */
class MigrateRbacController extends Controller
{
    public function actionToDb()
    {
        $this->run('migrate/up', ['migrationPath' => '@vendor/yiisoft/yii2/rbac/migrations']);

        /** @var \yii\rbac\ManagerInterface $oldAuth */
        $oldAuth = Yii::$app->authManagerPhp;
      
        $newAuth = Yii::$app->authManager;

        $rulesMapping = [
            // Example:
            // 'news-update' => \common\rbac\rules\AuthorRule::class,
            // 'leasing-view' => \common\rbac\rules\BrandUserRule::class,
        ];

        // 1 - migrate all rules
        foreach ($oldAuth->getRules() as $rule) {
            $newRule = new $rulesTranslation[$rule->name]();
            $newAuth->add($newRule);
        }

        // 2 - migrate all permissions
        foreach ($oldAuth->getPermissions() as $permission) {
            $newPermission = $newAuth->createPermission($permission->name);
            $newPermission->description = $permission->description;
            $newPermission->data = $permission->data;
            $newPermission->ruleName = $permission->ruleName;
            $newPermission->createdAt = $permission->createdAt;
            $newPermission->updatedAt = $permission->updatedAt;

            $newAuth->add($newPermission);
        }

        // 2-1 - and their children
        foreach ($oldAuth->getPermissions() as $permission) {
            foreach ($oldAuth->getChildren($permission->name) as $child) {
                $newAuth->addChild($newPermission, $child);
            }
        }

        // 3 - migrate all roles & permissions => role, assignations => role
        foreach ($oldAuth->getRoles() as $role) {
            $newRole = $newAuth->createRole($role->name);
            $newRole->description = $role->description;
            $newRole->data = $role->data;
            $newRole->ruleName = $role->ruleName;
            $newRole->createdAt = $role->createdAt;
            $newRole->updatedAt = $role->updatedAt;

            $newAuth->add($newRole);

            foreach ($oldAuth->getPermissionsByRole($role->name) as $permission) {
                if ($oldAuth->hasChild($role, $permission)) {
                    $newAuth->addChild($newRole, $permission);
                }
            }

            foreach ($oldAuth->getUserIdsByRole($role->name) as $userId) {
                $newAuth->assign($newRole, $userId);
            }

        }
    }
}