[HttpPost("/catalogs/{catalogId}/records")] // 'Create' a new record
public ActionResult Create(int catalogId, string albumName)
{
Dictionary <string, object> model = new Dictionary <string, object>();
Catalog foundCatalog = Catalog.Find(catalogId);
Record newRecord = new Record(albumName);
foundCatalog.AddRecord(newRecord);
List <Record> catalogRecords = foundCatalog.Records;
model.Add("records", catalogRecords);
model.Add("catalog", foundCatalog);
return(View("Show", model));
}