public async Task <IActionResult> _ReportChart(int surveyId, int answerId)
        {
            var model = new ReportChartViewModel();

            model.Items = await service.SurveyChartBy(surveyId, answerId);

            return(PartialView(model));
        }
        public async Task <IActionResult> ReportChart()
        {
            var model  = new ReportChartViewModel();
            var userId = GetUserId();

            model.Surveys = await service.GetBy(userId, null, null);

            model.Answers = await service.GetAnswers();

            return(View(model));
        }