List <IGrouping <bool, Tuple <string, decimal> > > Section(int sectionId)
{
var courseTCs = SiteObjectRelationService
.GetByRelation(typeof(Section), sectionId, typeof(Course)).Select(x => x.Object_ID.ToString())
.ToList();
var parents = CourseService.GetAll(x => courseTCs.Contains(x.Course_TC) &&
x.IsTrack != true)
.Select(x => x.ParentCourse_TC).Distinct().ToList();
var context = new RecRepository().GetContext();
var coefs = parents.SelectMany(x => GetCoefs(context, x))
.GroupBy(x => x.Item1, x => x.Item2).Select(x => Tuple.Create(x.Key, x.Sum() / x.Count()));
var zero = parents.Except(coefs.Select(x => x.Item1)).Select(x => Tuple.Create(x, decimal.Zero));
coefs = coefs.Concat(zero);
var coefs2 = coefs
.GroupBy(x => parents.Contains(x.Item1));
return(coefs2.ToList());
}
public ActionResult CourseRecommendations(string id)
{
var model = new List <FullCourseCoef>();
if (!id.IsEmpty())
{
var parentTC = CourseService.GetValues(id, x => x.ParentCourse_TC);
var context = new RecRepository().GetContext();
var coefs = GetCoefs(context, parentTC);
if (coefs.Any())
{
var preCourses = CoursePrerequisiteService.GetAll(x => x.Course_TC == id)
.Select(x => x.RequiredCourse.ParentCourse_TC).ToList();
coefs = coefs.Where(x => !preCourses.Contains(x.Item1)).ToList();
model = GetCourses(coefs);
}
}
return(View(model));
}
