public IEnumerable <CourseSubject> CreateCourseSubjectToChooseByCourseIdAndSubjectToDelete
(int courseId, int id, List <Subject> subjects)
{
subjectService = new SubjectService();
courseService = new CourseService();
Subject subjectToRemove = subjectService.getSubjectById(id);
Course course = courseService.GetCourseByCourseId(courseId);
if (subjectToRemove == null)
{
return(null);
}
subjects.Remove(subjectToRemove);
List <CourseSubject> subjectsToChoose = new List <CourseSubject>();
foreach (Subject subject in subjects)
{
CourseSubject courseSubject = new CourseSubject()
{
Course = course,
Subject = subject
};
subjectsToChoose.Add(courseSubject);
}
return(subjectsToChoose);
}
public Dictionary <Subject, Teacher> getSubjectTeacherPairs(int courseId)
{
Dictionary <Subject, Teacher> subjectTeacherPairs =
new Dictionary <Subject, Teacher>();
IEnumerable <CourseSubject> allCourseSubjects = db.CourseSubjects.ToList();
teacherService = new TeacherService();
subjectService = new SubjectService();
foreach (CourseSubject courseSubject in allCourseSubjects)
{
if (courseSubject.CourseId == courseId)
{
Subject wantedSubject = subjectService
.getSubjectById(courseSubject.SubjectId);
Teacher wantedTeacher = teacherService
.getCorrespondingTeacher(wantedSubject.TeacherId);
subjectTeacherPairs.Add(wantedSubject, wantedTeacher);
}
}
return(subjectTeacherPairs);
}
public List <Subject> GetSubjectsFromCourse(int courseId)
{
List <Subject> studentSubjects = new List <Subject>();
IEnumerable <CourseSubject> courseSubjects = db.CourseSubjects.ToList();
Subject subject = new Subject();
int subjectId;
subjectService = new SubjectService();
foreach (CourseSubject courseSubject in courseSubjects)
{
if (courseSubject.CourseId == courseId)
{
subjectId = courseSubject.SubjectId;
subject = subjectService.getSubjectById(subjectId);
studentSubjects.Add(subject);
}
}
return((List <Subject>)studentSubjects);
}