public function getAssetUrl($bundle, $asset)
{
$url = parent::getAssetUrl($bundle, $asset);
$absPath = \Yii::getAlias('@webroot') . $url;
if (is_file($absPath)) {
$mtime = filemtime($absPath);
$md = md5($mtime);
$v = substr($md, 0, 8);
$url .= StringHelper::contains($url, '?') ? '&' : '?';
$url .= "v={$v}";
}
return $url;
}
