public ActionResult Pieces(int id) { var version = Entities().VariantVersions.Find(id); if (version == null) { return(HttpNotFound()); } UserService users = GetService <UserService>(); if (!users.IsAllowedToEdit(version.Variant, User.Identity.Name)) { return(new HttpUnauthorizedResult()); } DefinitionService definitions = GetService <DefinitionService>(); var model = new PieceDefinitionsModel(version, definitions.GetPieceDefinitionXML(version)); return(View(model)); }