public static IList <StandardGradingViewData> Create(IList <GradingStandardInfo> gradingStandards, IList <int> studentIds) { var gradigDic = gradingStandards.GroupBy(x => x.Standard.Id).ToDictionary(x => x.Key, x => x.ToList()); var res = new List <StandardGradingViewData>(); foreach (var kv in gradigDic) { var gradingSt = kv.Value.First(); var standardGrading = new StandardGradingViewData { Standard = StandardViewData.Create(gradingSt.Standard), NumericAvg = (int?)kv.Value.Average(x => x.NumericGrade), Items = new List <StandardGradingItemViewData>() }; res.Add(standardGrading); foreach (var studentId in studentIds) { var gradingInfo = kv.Value.FirstOrDefault(x => x.StudentId == studentId); if (gradingInfo != null) { standardGrading.Items.Add(StandardGradingItemViewData.Create(gradingInfo)); } } } return(res); }
public static StandardGradingGridViewData Create(GradingPeriod gradingPeriod, IList <GradingStandardInfo> gradingStandardInfos, IList <Student> students) { var res = new StandardGradingGridViewData { GradingPeriod = GradingPeriodViewData.Create(gradingPeriod), Students = students.Select(x => GradeStudentViewData.Create(x, x.IsWithdrawn)).ToList() }; gradingStandardInfos = gradingStandardInfos.Where(x => students.Any(y => y.Id == x.StudentId) && gradingPeriod.Id == x.GradingPeriodId).ToList(); res.GradingItems = StandardGradingViewData.Create(gradingStandardInfos, res.Students.Select(x => x.StudentInfo.Id).ToList()); if (res.GradingItems.Count > 0) { res.Avg = (int?)res.GradingItems.Average(x => x.NumericAvg); } return(res); }