Redirect from record producer

/**
*  Handling redirect to the same portal, where record producer
*  has been initially called
*/
var current_url = String(producer.current_url);
if (!current_url){
	producer.portal_redirect = "sp?id=submit_successful";
} else {
	var portalRedirect = '/' + getPortalFromUrl(current_url) + '?id=submit_successful';
	producer.portal_redirect = portalRedirect;
}

/**
*	This function gets portal id from the url
**/
function getPortalFromUrl(url){
	var regex = /com\/(.+)\?id=/gm;
	var m;
	var returnResult;

	while ((m = regex.exec(url)) !== null) {
		// This is necessary to avoid infinite loops with zero-width matches
		if (m.index === regex.lastIndex) {
			regex.lastIndex++;
		}

		// The result can be accessed through the `m`-variable.
		m.forEach(function(match, groupIndex){
			if (groupIndex == 1){
				returnResult = match;
			}
		});
	}
	return returnResult;
}