public IHttpActionResult PostEnrollStudent(int classRoomId, ClassRoomEnrollStudentDto enroll)
{
var userData = IdentityHelper.GetLoggedInUser(RequestContext);
logger.Info("Enroll Student {@studentId} in ClassRoom {@classRoomId} {@enrollData} by {@userData}", enroll.StudentId, enroll.ClassRoomId, enroll, userData);
if (classRoomId != enroll.ClassRoomId)
{
return(BadRequest("Class identities do not match."));
}
return(Ok(service.EnrollStudent(enroll)));
}
/// <summary>
/// Enroll student in classroom
/// OPTIONS: enroll in classroom, enroll in program
/// TODO use converter for classroom
/// </summary>
/// <param name="enroll"></param>
/// <returns></returns>
public ClassRoomDto EnrollStudent(ClassRoomEnrollStudentDto enroll)
{
// Check if classroom is ok
ClassRoom classRoom = db.ClassRoomsRepository.GetByID(enroll.ClassRoomId);
if (classRoom == null)
{
return(null);
}
StudentUser student = db.StudentsRepository.Get(s => s.Id == enroll.StudentId).FirstOrDefault();
if (student == null)
{
return(null);
}
// --- IF STUDENT IS ENROLLED:
if (student.ClassRoomId != null)
{
// check if already registered for a course
var takingCourse = db.TakingsRepository.Get(t => t.Student.Id == student.Id).FirstOrDefault();
if (takingCourse != null)
{
// can't switch classroom, too late
logger.Info("Student {@studentId} from classroom {@classRoomId} is enrolled in a course, cannot change classRooms anymore", student.Id, classRoom.Id);
var ex = new StudentEnrolledInCourseException(string.Format("Student {0} from classroom {1} is enrolled in a course, cannot change classRooms anymore", student.Id, classRoom.Id));
ex.Data.Add("studentId", student.Id);
ex.Data.Add("classRoomId", classRoom.Id);
throw ex;
}
}
// Two strategies with current model:
// -- 1. Change ClassRoom property of student.
// -- 2. Update Students collection of classroom.
// -- (3.) with associative table
// with the collection stuff we have one problem:
// well, let's find out, dear...
var enrolled = classRoom.Students;
// Can we check like this:
if (enrolled.Where(e => e.Id == student.Id).FirstOrDefault() != null)
{
// student is already enrolled, quit
return(null);
}
enrolled.Add(student);
db.Save();
// This is only the classroom with the list of enrolled students
// no courses.
return(db.ClassRoomsRepository.Get(c => c.Id == classRoom.Id)
.Select(cr => new ClassRoomDto()
{
ClassRoomId = cr.Id,
Name = cr.Name,
Program = null,
SchoolGrade = cr.ClassGrade,
Students = cr.Students.Select(s => new ClassRoomDto.ClassRoomStudentDto()
{
FullName = s.FirstName + " " + s.LastName,
StudentId = s.Id
}).ToList()
})
.FirstOrDefault());
}
public ClassRoomDto EnrollStudent(ClassRoomEnrollStudentDto enroll)
{
throw new NotImplementedException();
}
