/**
* Appends a VG-style parameter to an Url object
*
* VG-style means:
* {<vgIncrementNumber>,(<key>=)<value>}(,...)
* @param \Cx\Core\Routing\Url $url Url object to apply params to
* @param int $vgId ID of the VG for the parameter
* @param string $name Parameter name
* @param string $value Parameter value
*/
protected static function appendVgParam($url, $vgId, $name, $value)
{
$params = $url->getParamArray();
$pre = '';
if (isset($params[$name])) {
$pre = $params[$name];
}
if (!empty($pre)) {
$pre .= ',';
}
$url->setParam($name, $pre . '{' . $vgId . ',' . $value . '}');
}