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);
}