public CourseRatingPage(Course c, Enrolled e)
{
InitializeComponent();
_historyService = new HistoryService((string)Application.Current.Properties["jwt"]);
chosenCourse = new EnrolledViewModel(c, e);
BindingContext = chosenCourse;
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false},
/// false if the student is already enrolled in the Class.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
// Query db for ClassID from given Course(subject/num) and Semester(season/year)
var query =
from cl in db.Class
join cr in db.Course on cl.CourseId equals cr.CourseId
join sm in db.Semester on cl.SemesterId equals sm.SemesterId
where cr.DeptAbbr == subject && cr.Number == num && sm.Season == season && sm.Year == year
select cl.ClassId;
uint classID = query.First();
Enrolled newEnroll = new Enrolled();
newEnroll.ClassId = classID;
newEnroll.SId = uid;
newEnroll.Grade = "--";
// try adding the new enrolled info to the db. Only return true if the changes are applied successfully.
try
{
db.Enrolled.Add(newEnroll);
db.SaveChanges();
return(Json(new { success = true }));
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.Message);
}
return(Json(new { success = false }));
}
public void buildRateCourseViewModelTest_NullCourse()
{
Enrolled enrolled = _context.Enrolled.Find(9);
RateCourseViewModel rateCourseViewModel = _viewModelService.buildRateCourseViewModel(enrolled, null);
Assert.Null(rateCourseViewModel);
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false}.
/// false if the student is already enrolled in the class, true otherwise.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
uint theID = uint.Parse(uid.Remove(0, 1));
var query =
from d in db.Department
where d.Abbrv == subject
join co in db.Course on d.DepartmentId equals co.DepartmentId
where co.Number == num
join cl in db.Class on co.CourseId equals cl.CourseId
where cl.Season == season && cl.Year == year
select new
{
cl.ClassId
};
if (db.Enrolled.Where(en => en.UId == theID && en.ClassId == query.First().ClassId).Any())
{
return(Json(new { success = false }));
}
Enrolled e = new Enrolled();
e.ClassId = query.First().ClassId;
e.UId = theID;
e.Grade = "--";
db.Enrolled.Add(e);
if (db.SaveChanges() > 0)
{
return(Json(new { success = true }));
}
return(Json(new { success = false }));
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false}.
/// false if the student is already enrolled in the class, true otherwise.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid) //works
{
//sub , num --> catalogID
// catalogID, season, year --> classid
// classid, uied -- add to Enroll
var flag = false;
using (Team9LMSContext db = new Team9LMSContext())
{
var classIDQuery = from cid in (from c in db.Courses
where c.Subject == subject && c.Num == num
select new { CatalogId = c.CatalogId })
join cl in db.Classes
on cid.CatalogId equals cl.CatalogId
where cl.Semester == year.ToString() + season
select new { classID = cl.ClassId };
Enrolled newEn = new Enrolled();
newEn.UId = uid;
newEn.ClassId = (uint)Convert.ToInt32(classIDQuery.First().classID);
db.Enrolled.Add(newEn);
db.SaveChanges();
flag = true;
}
return(Json(new { success = flag }));
}
public async void UpdateEnrollTest_HappyPath()
{
int enrollNum = 1;
Enrolled enrolled = await _enrollService.getEnrollAsync(enrollNum);
Assert.NotNull(enrolled);
//Make changes
enrolled.courseId = 99;
enrolled.studentId = 99;
enrolled.completed = true;
enrolled.grade = 99;
enrolled.rating = 99;
enrolled.comment = "";
enrolled.course = null;
enrolled.student = null;
//Update the enrolled
_enrollService.updateEnroll(enrolled);
Enrolled enrolledTemp = await _enrollService.getEnrollAsync(enrollNum);
Assert.NotNull(enrolledTemp);
//Verify that the changes took place
Assert.True(enrolledTemp.enrollId == 1);
Assert.True(enrolledTemp.studentId == 99);
Assert.True(enrolledTemp.completed);
Assert.True(enrolledTemp.grade == 99);
Assert.True(enrolledTemp.rating == 99);
Assert.Equal("", enrolledTemp.comment);
Assert.Null(enrolledTemp.course);
Assert.Null(enrolledTemp.student);
}
public async Task <ActionResult <Enrolled> > PostEnrolled(Enrolled enrolled)
{
_context.Enrolleds.Add(enrolled);
await _context.SaveChangesAsync();
return(CreatedAtAction("GetEnrolled", new { id = enrolled.Id }, enrolled));
}
public async Task <IActionResult> PutEnrolled(int id, Enrolled enrolled)
{
if (id != enrolled.Id)
{
return(BadRequest());
}
_context.Entry(enrolled).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!EnrolledExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(NoContent());
}
public void GetGPAMultiple07()
{
var db = Utils.MakeMockDatabase();
var controller = MakeController(db);
string uid = AddOneStudent(db);
for (int i = 0; i < 10; i++)
{
Enrolled newEnrolled = new Enrolled {
UId = uid,
CId = 101 + (uint)i,
Grade = "D-"
};
db.Enrolled.Add(newEnrolled);
}
db.SaveChanges();
var jsonResults = controller.GetGPA(uid) as JsonResult;
dynamic resultValues = jsonResults.Value;
float gpa = Utils.GetValue <float>(resultValues, "gpa");
Assert.True(MathF.Abs(0.7f - gpa) < 0.01f);
}
/*
* Stil trying to get this to work... 8/2/18
*
* /// <summary>
* /// Calculates a student's GPA
* /// A student's GPA is determined by the grade-point representation of the average grade in all their classes.
* /// If a student does not have a grade in a class ("--"), that class is not counted in the average.
* /// Otherwise, the point-value of a letter grade for the UofU is determined by the table on this page:
* /// https://advising.utah.edu/academic-standards/gpa-calculator-new.php
* /// </summary>
* /// <param name="uid">The uid of the student</param>
* /// <returns>A JSON object containing a single field called "gpa" with the number value</returns>
* public IActionResult GetGPA(string uid)
* {
* using (Team6Context db = new Team6Context())
* {
* var qcat =
* from stud in db.Enrolled
* where stud.Student.Equals(uid)
* join cl in db.Class
* on stud.ClassId equals cl.ClassId
* into classes
* from cs in classes
* join ass in db.Assignment
* on cs.ClassId equals ass.Class
* into final
* from f in final
* join cat in db.AssignmentCat
* on f.AssignmentCat equals cat.AcatId
* into finalfinal
* from ff in finalfinal
* join co in db.Course
* on ff.AcatId equals co.CatId
*
* select new
* {
* category = co.CatId,
* season = cs.Semester,
* num = co.Number,
* subject = co.Department,
* year = cs.Year
* };
*
* var allCats = 0;
* var numericGradeTotal = 0; //total weighted score for the class
*
* var categories = qcat.ToArray();
*
* foreach (var cat in categories) {
* var catTotalPoints = 0;
* // query to get assignments for that category
* var qasg = from cl in db.Class
* where cl.Semester.Equals(cat.season) && cl.Year == cat.year && cl.CatID == cat.num
* join co in db.Course
* on cl.CatID equals co.CatId
* into classes
* from _cl in classes
* where _cl.Department.Equals(cat.subject)
* join ass_cat in db.AssignmentCat
* on cl.CatID equals ass_cat.Class
* into catset
* from cats in catset
* join asss in db.Assignment
* on cats.AcatId equals asss.AssignmentCat
*
* select new
* {
* asgns = asss.AssId,
* score = asss.Points
* };
*
* var asgns = qcat.ToArray();
* foreach (var asg in asgns) {
* catTotalPoints += asg..Max(); //maximum points possible in the assignment
* var qsub = query.ToArray(); //to get the submission to the specific assignment(gets either 0 or 1 things) for 1 student
*
* if (qsub.count() == 0)
* {
* catEarned += 0;
* }
*
* else { catEarned += qsub.first().score }
* }
*
* catPercent = (catEarned / catTotalPoints);//percentage of points the student earned in that category
* catScore = catPercent * cat.weight;
* numericGradeTotal += catScore;
* allCats += cat.weight;
* }
*
* numericGradeTotal *= (100 / allCats); //rescale category weight into a percentage
* return null;
* }
* }
*/
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false}. False if the student is already enrolled in the class.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
var query =
from cl in db.Class
where cl.Semester.Equals(season) && cl.Year == year && cl.CatId == num
join co in db.Course
on cl.CatId equals co.CatId
join e in db.Enrolled
on cl.ClassId equals e.ClassId
into roll
from student in roll
where student.Equals(uid) && co.Department.Equals(subject)
select new
{
Name = student.StudentId,
Class = cl.ClassId
};
if (query.ToArray().Count() != 0)
{
return(Json(new { success = false }));
}
else
{
// Create a new AssignmentCat object.
Enrolled e = new Enrolled()
{
StudentId = uid,
ClassId = query.ToArray()[0].Class,
};
return(Json(query.ToArray()));
}
}
public async Task <IActionResult> Edit(int id, [Bind("EnrolledID,StudentID,ClassroomID")] Enrolled enrolled)
{
if (id != enrolled.EnrolledID)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(enrolled);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!EnrolledExists(enrolled.EnrolledID))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
PopulateClassroomDropDownList(enrolled.ClassroomID);
PopulateStudentDropDownList(enrolled.StudentID);
return(View(enrolled));
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false}.
/// false if the student is already enrolled in the class, true otherwise.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
var classId =
from c in db.Classes
where c.Catalog.Num == num
where c.Catalog.Department == subject
where c.Semester == (season + " " + year.ToString())
select new
{
c.ClassId
};
try
{
Enrolled enroll = new Enrolled();
enroll.UId = uid;
enroll.ClassId = classId.FirstOrDefault().ClassId;
enroll.Grade = "--";
db.Enrolled.Add(enroll);
db.SaveChanges();
return(Json(new { success = true }));
}
catch (Exception e)
{
return(Json(new { success = false }));
}
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false}. False if the student is already enrolled in the class.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
using (Team9Context db = new Team9Context())
{
//var queryEnrolled =
// from s in db.Student
// join e in db.Enrolled on s.UId equals e.UId
// join cl in db.Class on e.ClassId equals cl.ClassId
// join cr in db.Course on cl.CatId equals cr.CatId
// where e.UId == uid && cr.CourseNum == num && cl.Season == season && cl.Year == year && cr.DId == subject
// select new { uid = e.UId, classID = cl.ClassId };
var queryEnrolled =
from cr in db.Course
join cl in db.Class on cr.CatId equals cl.CatId into join1
from j1 in join1.DefaultIfEmpty()
join e in db.Enrolled on j1.ClassId equals e.ClassId into join3
from j3 in join3.DefaultIfEmpty()
where cr.CourseNum == num && j1.Season == season && j1.Year == year && cr.DId == subject
select new { uid = j3.UId ?? null, classID = j1.ClassId };
bool uidEnrolled = false;
for (int i = 0; i < queryEnrolled.Count(); i++)
{
if (queryEnrolled.ToArray()[0].uid == uid)
{
uidEnrolled = true;
}
}
if (!uidEnrolled)
{
//insert into enroll, grade, uid, classID
Enrolled enroll = new Enrolled();
enroll.UId = uid;
enroll.ClassId = queryEnrolled.ToArray()[0].classID;
enroll.Grade = "--";
db.Enrolled.Add(enroll);
try
{
db.SaveChanges();
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Problem saving changes: " + e);
}
return(Json(new { success = true }));
}
else
{
return(Json(new { success = false }));
}
}
}
public ActionResult DeleteConfirmed(int id)
{
Enrolled enrolled = db.Enrolleds.Find(id);
db.Enrolleds.Remove(enrolled);
db.SaveChanges();
return(RedirectToAction("Index"));
}
/// <summary>
/// Helper for configuring a database with no assignment categories
/// </summary>
/// <returns></returns>
private Team55LMSContext MakeDatabaseWithOneAssignment()
{
var optionsBuilder = new DbContextOptionsBuilder <Team55LMSContext>();
optionsBuilder.UseInMemoryDatabase("one_assignment").UseApplicationServiceProvider(NewServiceProvider());
Team55LMSContext db = new Team55LMSContext(optionsBuilder.Options);
Courses course = new Courses
{
CourseId = 5,
CourseNumber = 2210,
Name = "Calculus III",
SubjectAbbr = "MATH"
};
Classes calculusIII = new Classes
{
CourseId = 2,
Location = "TBA",
Semester = "Summer 2020",
Professor = "u0000010",
Start = TimeSpan.Parse("12:25:00"),
End = TimeSpan.Parse("13:10:00"),
};
Enrolled enr = new Enrolled
{
ClassId = calculusIII.ClassId,
Grade = "--",
UId = "u0000002",
};
AssignmentCategories category = new AssignmentCategories
{
ClassId = calculusIII.ClassId,
Name = "Assignments",
Weight = 50,
};
Assignments assignment = new Assignments
{
AssignCatId = category.AssignCatId,
Contents = "Just compute the indefinite integral on problem 2, page 303 :)",
MaxPoints = 10,
Name = "One Problem",
DueDate = DateTime.Parse("12/01/2020 11:59:59"),
};
db.Courses.Add(course);
db.Classes.Add(calculusIII);
db.Enrolled.Add(enr);
db.AssignmentCategories.Add(category);
db.Assignments.Add(assignment);
db.SaveChanges();
return(db);
}
/// <summary>
/// Creates a new assignment for the given class and category.
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The new assignment name</param>
/// <param name="asgpoints">The max point value for the new assignment</param>
/// <param name="asgdue">The due DateTime for the new assignment</param>
/// <param name="asgcontents">The contents of the new assignment</param>
/// <returns>A JSON object containing success = true/false</returns>
public IActionResult CreateAssignment(string subject, int num, string season, int year, string category, string asgname, int asgpoints, DateTime asgdue, string asgcontents)
{
var createAssign = from assignCat in db.AssignmentCategories
join classes in db.Classes on assignCat.ClassId equals classes.ClassId
join course in db.Courses on classes.CId equals course.CId
where course.Listing == subject &&
course.Number == num &&
classes.Semester.Equals(season + year) &&
assignCat.Name == category
select new
{
assignCat.AcId,
classes.ClassId
};
uint assignmentCatID = createAssign.First().AcId;
uint classesID = createAssign.First().ClassId;
Assignments newAssignment = new Assignments
{
AcId = assignmentCatID,
Name = asgname,
Contents = asgcontents,
Due = asgdue,
Points = (uint)asgpoints
};
db.Assignments.Add(newAssignment);
db.SaveChanges();
//Change all student scores
//Get all Students in that class
var getAllStudents = (from student in db.Students
join enroll in db.Enrolled on student.UId equals enroll.UId
join classes in db.Classes on enroll.ClassId equals classes.ClassId
where classes.ClassId == classesID
select student).ToList();
//For each student and knowing which class they are in
foreach (Students s in getAllStudents)
{
//Get their assignmentCategories and compute
string letterGrade = getStudentScore(s.UId, classesID);
var changeGrade = from enroll in db.Enrolled
where enroll.ClassId == classesID &&
s.UId == enroll.UId
select enroll;
Enrolled grade = changeGrade.SingleOrDefault();
if (grade != null)
{
grade.Grade = letterGrade;
}
db.SaveChanges();
}
return(Json(new { success = true }));
}
public ActionResult Edit([Bind(Include = "Id,StudentId,ClassId,Grade")] Enrolled enrolled)
{
if (ModelState.IsValid)
{
db.Entry(enrolled).State = EntityState.Modified;
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(enrolled));
}
public async Task updateEnrollTest(int eid, int sid, int cid, bool c, int g, int r, string co)
{
Enrolled newEnroll = new Enrolled {
enrollId = eid, studentId = sid, courseId = cid, completed = c, grade = g, rating = r, comment = co
};
var result = await _controller.updateEnroll(newEnroll);
Assert.NotNull(result);
Assert.IsType <OkResult>(result);
}
public async Task <IActionResult> Rate(int eid)
{
Enrolled rate = await _enrollSerivce.getEnrollAsync(eid);
Course course = await _courseService.getCourseAsync(rate.courseId);
RateCourseViewModel vm = _viewModelSerivce.buildRateCourseViewModel(rate, course);
return(View(vm));
}
public async Task <IActionResult> Rate(RateCourseViewModel courseRate)
{
Enrolled newRating = await _enrollSerivce.getEnrollAsync(courseRate.EnrollId);
newRating.rating = courseRate.Rating;
newRating.comment = courseRate.Comment;
_enrollSerivce.updateEnroll(newRating);
return(RedirectToAction("Index", "Home"));
}
/// <summary>
/// Set the score of an assignment submission
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The name of the assignment</param>
/// <param name="uid">The uid of the student who's submission is being graded</param>
/// <param name="score">The new score for the submission</param>
/// <returns>A JSON object containing success = true/false</returns>
public IActionResult GradeSubmission(string subject, int num, string season, int year, string category, string asgname, string uid, int score)
{
//Get the submission of the student
var getSubmission = from submit in db.Submission
join assign in db.Assignments on submit.AId equals assign.AId
join assignCat in db.AssignmentCategories on assign.AcId equals assignCat.AcId
join classes in db.Classes on assignCat.ClassId equals classes.ClassId
join course in db.Courses on classes.CId equals course.CId
where course.Listing == subject &&
course.Number == num &&
assignCat.Name == category &&
classes.Semester.Equals(season + year) &&
assign.Name == asgname &&
submit.UId == uid
select submit;
Submission changeScore = getSubmission.FirstOrDefault();
//update the grade of that assignment then change total grade
if (getSubmission != null)
{
changeScore.Score = (uint)score;
}
db.SaveChanges();
//Get the classID
var getClassID = (from submit in db.Submission
join assign in db.Assignments on submit.AId equals assign.AId
join assignCat in db.AssignmentCategories on assign.AcId equals assignCat.AcId
join classes in db.Classes on assignCat.ClassId equals classes.ClassId
join course in db.Courses on classes.CId equals course.CId
where course.Listing == subject &&
course.Number == num &&
assignCat.Name == category &&
classes.Semester.Equals(season + year) &&
assign.Name == asgname &&
submit.UId == uid
select new
{
assignCat.ClassId
});
string letterGrade = getStudentScore(uid, getClassID.First().ClassId);
var changeGrade = from enroll in db.Enrolled
where enroll.ClassId == getClassID.First().ClassId&&
uid == enroll.UId
select enroll;
Enrolled grade = changeGrade.SingleOrDefault();
if (grade != null)
{
grade.Grade = letterGrade;
}
db.SaveChanges();
return(Json(new { success = true }));
}
public async Task <string> postCommentAsync(Enrolled e)
{
var data = JsonConvert.SerializeObject(e);
var content = new StringContent(data, Encoding.UTF8, "application/json");
var response = await _client.PostAsync(API_DOMAIN + "/enroll", content);
var result = await response.Content.ReadAsStringAsync();
return(result);
}
public static void Enroll(string uid, uint cid, Team41LMSContext db)
{
Enrolled newEnrolled = new Enrolled {
UId = uid,
CId = cid,
Grade = "--"
};
db.Enrolled.Add(newEnrolled);
db.SaveChanges();
}
public ActionResult Create([Bind(Include = "Id,StudentId,ClassId,Grade")] Enrolled enrolled)
{
if (ModelState.IsValid)
{
db.Enrolleds.Add(enrolled);
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(enrolled));
}
public Enrolled drop(int eid)
{
Enrolled thisEnroll = _context.Enrolled.Find(eid);
if (thisEnroll != null)
{
_context.Enrolled.Remove(thisEnroll);
_context.SaveChanges();
}
return(thisEnroll);
}
public void validateModelForNULL()
{
Course c = null;
Enrolled e = null;
EnrolledViewModel model = new EnrolledViewModel(c, e);
Assert.True(model.eid == 0);
Assert.True(model.cid == 0);
Assert.True(model.cour == null);
Assert.True(model.enroll == null);
}
/// <summary>
/// This Rejected Reject a Course
/// </summary>
/// <param name="id"></param>
/// <returns>Return Edit View</returns>
// GET: Admin/Rejected/5
public ActionResult Rejected(int id)
{
Enrolled enrolled = new Enrolled();
enrolled = db.Enrolleds.Find(id);
enrolled.Request = "Rejected".ToString();
db.Entry(enrolled).State = EntityState.Modified;
db.SaveChanges();
return(RedirectToAction("Edit"));
}
public async void UpdateEnrollTest_NullEnroll()
{
int enrollNum = -1;
Enrolled enrolled = await _enrollService.getEnrollAsync(enrollNum);
Assert.Null(enrolled);
//Update the enrolled
int outcome = _enrollService.updateEnroll(enrolled);
Assert.True(outcome == 1);
}
/// <summary>
/// Creates a new assignment for the given class and category.
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The new assignment name</param>
/// <param name="asgpoints">The max point value for the new assignment</param>
/// <param name="asgdue">The due DateTime for the new assignment</param>
/// <param name="asgcontents">The contents of the new assignment</param>
/// <returns>A JSON object containing success = true/false</returns>
public IActionResult CreateAssignment(string subject, int num, string season, int year, string category, string asgname, int asgpoints, DateTime asgdue, string asgcontents)
{
var query = from asg in db.Assignments
where asgname == asg.Name
select asg;
if (query.Count() > 0 && query.SingleOrDefault() != null)
{
return(Json(new { success = false }));
}
var query1 = from cr in db.Courses
join c in db.Classes on new { A = cr.CatalogId, B = cr.Listing, C = (int)cr.Number, D = season, E = year }
equals new { A = c.CategoryId, B = subject, C = num, D = (string)splitSem(c.Semester, 0), E = (int)splitSem(c.Semester, 1) } into joined
from j in joined
select j;
var query2 = from q in query1
join ac in db.AssignmentCategories on new { A = q.ClassId, B = category } equals new { A = ac.ClassId, B = ac.Name } into joined
from j in joined.DefaultIfEmpty()
select j.AssignCatId;
Assignments a = new Assignments();
a.AssignCatId = query2.SingleOrDefault();
a.Name = asgname;
a.Points = (uint)asgpoints;
a.Due = asgdue;
a.Contents = asgcontents;
db.Assignments.Add(a);
db.SaveChanges();
//Update Grades for all students
var updateGrades = from e in db.Enrolled
where query1.FirstOrDefault().ClassId == e.ClassId
select e.UId;
foreach (string u in updateGrades)
{
//Requery for where the students grade is in the enrolled table
var gradeQuery = from e in db.Enrolled
where e.UId == u && query1.FirstOrDefault().ClassId == e.ClassId
select e;
Enrolled eObj = gradeQuery.SingleOrDefault();
eObj.Grade = updateGrade(subject, num, season, year, u);
db.SaveChanges(); //Resave changes with new grade
}
return(Json(new { success = true }));
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false}. False if the student is already enrolled in the class.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
// Check to see if the student is already enrolled
var query =
from Co in db.Courses //COURSES to CLASSES
join Cl in db.Classes on Co.CatalogId equals Cl.Offering into join1
from j1 in join1 // CLASSES to ENROLLED
join E in db.Enrolled on j1.ClassId equals E.Class into join2
from j2 in join2
where Co.Department == subject && // Ensure correct course department
Co.Number == num && // Ensure correct course number
j1.Season == season && // Ensure correct season
j1.Year == year && // Ensure class year
j2.Student == uid // Ensure student is enrolled
select j2.Student;
// If the student's already enrolled, return a false success
if (query.Count() == 1)
{
var alreadyRegistered = new { success = false };
return(Json(alreadyRegistered));
}
// If we're here, then student is not currently enrolled in course
Enrolled new_enr = new Enrolled();
new_enr.Student = uid;
var query2 =
from Co in db.Courses
where Co.Number == num && Co.Department == subject
join Cl in db.Classes
on Co.CatalogId equals Cl.Offering into join1
from j1 in join1
where j1.Season == season && j1.Year == year
select j1.ClassId;
new_enr.Class = query2.First();
db.Enrolled.Add(new_enr);
try
{
db.SaveChanges();
// Registration complete, so return
var successfullyRegistered = new { success = true };
return(Json(successfullyRegistered));
}
catch // If the changes to the database fail
{
return(Json(new { success = false }));
}
}
