public async Task <IActionResult> DeleteSubject(DeleteSubjectViewModel model)
        {
            var subject = await _evaluationManager.FindSubjectByIdAsync(model.Id);

            if (subject == null)
            {
                return(NotFoundSubject(model.Id));
            }
            await _evaluationManager.DeleteSubjectAsync(subject);

            Notifier.Success("你已成功删除了一条技术点记录!");
            return(RedirectToAction(nameof(Subjects), new { model.EvaluationId }));
        }