public List <CourseTeachersStudentsAverageGradesModelView> CreateCourseTeachersStudentsAverageGradesModelView(List <Course> courses)
{
teacherService = new TeacherService();
studentSubjectService = new StudentSubjectService();
studentService = new StudentService();
int numberOfTeacherFromACourse;
int numberOfEnrolledAndRegisteredStudentsInACourse;
Grade?averageGrade;
List <CourseTeachersStudentsAverageGradesModelView> viewModel = new List <CourseTeachersStudentsAverageGradesModelView>();
foreach (Course course in courses)
{
numberOfTeacherFromACourse = teacherService.GetNumberOfTeachersPerCourse(course);
numberOfEnrolledAndRegisteredStudentsInACourse = studentService
.GetStudentsRegisteredInACourse(course).Count();
averageGrade = studentSubjectService.GetStudentAverageGradePerCourse(course);
CourseTeachersStudentsAverageGradesModelView CourseTeachersStudentsAverageGradesModelView
= new CourseTeachersStudentsAverageGradesModelView()
{
Course = course,
numberOfTeachers = numberOfTeacherFromACourse,
numberOfStudents = numberOfEnrolledAndRegisteredStudentsInACourse,
averageGrade = averageGrade
};
viewModel.Add(CourseTeachersStudentsAverageGradesModelView);
}
return(viewModel);
}
public List <TeacherSubjectNumberOfStudentsViewModel> CreateTeacherSubjectNumberOfStudentsViewModel(Teacher teacher, IEnumerable <Subject> teacherSubjects)
{
int numberOfStudents = 0;
List <TeacherSubjectNumberOfStudentsViewModel> viewModel =
new List <TeacherSubjectNumberOfStudentsViewModel>();
foreach (Subject subject in teacherSubjects)
{
studentSubjectService = new StudentSubjectService();
numberOfStudents = studentSubjectService.NumberOfStudentsPerSubject(subject);
TeacherSubjectNumberOfStudentsViewModel model =
new TeacherSubjectNumberOfStudentsViewModel()
{
Teacher = teacher,
Subject = subject,
NumberOfStudents = numberOfStudents
};
viewModel.Add(model);
}
return(viewModel);
}
public IEnumerable <StudentSubject> GetTeacherStudentSubjectsByTeacherId(int teacherId)
{
studentSubjectService = new StudentSubjectService();
IEnumerable <StudentSubject> teachersStudentSubjects = studentSubjectService.
GetStudentSubjectsByTeacherId(teacherId);
return(teachersStudentSubjects);
}
public Grade?GetStudentAverageGradePerCourse(Course course)
{
studentService = new StudentService();
subjectService = new SubjectService();
studentSubjectService = new StudentSubjectService();
gradeService = new GradeService();
int studentsAverageGrade;
int studentsAverageRounded;
Grade?averageGrade;
List <Subject> subjectsFromACourse = subjectService.GetSubjectsFromACourse(course);
int numberOfSubjectsInACourse = subjectsFromACourse.Count();
int numberOfStudentsRegisteredInACourse = studentService
.GetStudentsRegisteredInACourse(course).Count();
int studentsTotalGrades = studentSubjectService
.GetTotalStudentGradesFromACourse(course);
int numberOfStudentSubjectsGraded = GetNumberOfStudentsSubjectsGradedInACourse(subjectsFromACourse);
if (numberOfSubjectsInACourse != 0 && numberOfStudentSubjectsGraded != 0)
{
studentsAverageGrade =
studentsTotalGrades / numberOfStudentSubjectsGraded;
}
else
{
studentsAverageGrade = 0;
}
studentsAverageRounded = (int)Math.Round((decimal)studentsAverageGrade);
averageGrade = gradeService.ConvertIntToGrade(studentsAverageRounded);
return(averageGrade);
}
public Student RegisterStudent(UniversityStudentsList student)
{
courseSubjectService = new CourseSubjectService();
studentService = new StudentService();
studentSubjectService = new StudentSubjectService();
universityStudentsListService = new UniversityStudentsListService();
Student studentToRegister = new Student();
// adding and saving student to db, changing university list isEnrolled to true
studentToRegister = studentService.AddStudent(student);
//populate student with student subjects
ICollection <Subject> studentCourseSubjects = new List <Subject>();
studentCourseSubjects = courseSubjectService.GetSubjectsFromCourse(studentToRegister.CourseId);
studentSubjectService.CreateStudentSubjectList(studentCourseSubjects.ToList(),
studentToRegister);
return(studentToRegister);
}