Exporting CSV formatted data from Mojito

controller.server.js

exportcsv: function (ac) {
    ac.model.get('mydb').fetch(function (err, data) {
        var csv = convert2csv(data); // csv is of type string
        
        ac.http.addHeader('content-type', 'application/vnd.ms-excel');
        ac.http.addHeader("content-disposition", "attachment; filename=export");
        
        ac.done(csv);
    });
}