Как правильно сделать свою themes для проекта на yii2?

'components' => [
        'view' => [
            'theme' => [
                'pathMap' => ['@app/views' => '@app/themes/mytheme'],
            ],
        ],
    ],

class AppAsset extends AssetBundle
{
    public $sourcePath = '@app/themes/mytheme';
    public $css = [
        'css/style.css',
    ];
    public $js = [
    ];
    public $depends = [
        'yii\web\YiiAsset',
        'yii\bootstrap\BootstrapAsset',
    ];
}

<?php
namespace app\components;
use Yii;
use yii\base\InvalidConfigException;
use yii\helpers\ArrayHelper;
use yii\helpers\FileHelper;

class Theme extends \yii\base\Theme
{

    public $active;
    /**
     * @inheritdoc
     */
    public function applyTo($path)
    {

        $pathMap = ArrayHelper::getValue($this->pathMap,$this->active,$this->pathMap);

        if (empty($pathMap)) {
            if (($basePath = $this->getBasePath()) === null) {
                throw new InvalidConfigException('The "basePath" property must be set.');
            }
            $pathMap = [Yii::$app->getBasePath() => [$basePath]];
        }


        $path = FileHelper::normalizePath($path);
        foreach ($pathMap as $from => $tos) {
            $from = FileHelper::normalizePath(Yii::getAlias($from)) . DIRECTORY_SEPARATOR;
            if (strpos($path, $from) === 0) {
                $n = strlen($from);
                foreach ((array) $tos as $to) {
                    $to = FileHelper::normalizePath(Yii::getAlias($to)) . DIRECTORY_SEPARATOR;
                    $file = $to . substr($path, $n);
                    if (is_file($file)) {
                        return $file;
                    }
                }
            }
        }
        return $path;
    }
}

'view'=>[

            'theme' => [
                'class'=>'app\components\Theme',
                'active'=>'theme-default',
                'pathMap' => [
                    'theme-default' => [
                        '@app/views' => ['@app/themes/theme-default/views']
                    ],
                    'theme-dashboard' => [
                        '@app/views' => ['@app/themes/theme-dashboard/views']
                    ]
                ]
            ],
        ],

list($path, $webPath) = Yii::$app->getAssetManager()->publish(__DIR__."/assets");
$this->getView()->registerJsFile($webPath."/js/login.js",['depends' => ['yii\bootstrap\BootstrapAsset']]);