public ActionResult UpdateUserRating([FromBody] StudentGroupInputModel model) { if (model == null || model.UserId < 1 || model.GroupId < 1) { return(BadRequest("Object not found")); } StudentGroup modelSG = StudentGroupMapper.ToDataModel(model); if (modelSG.Rating > -1 && modelSG.Rating < 11) { groupStorage.UpdateUserRating(modelSG); return(Ok()); } else { return(BadRequest("Введите рейтинг от 0 до 10")); } }