public IGroupOfStudents Register(IGroupOfStudents groupOfStudents)
{
_context.GroupOfStudents.Add((GroupOfStudents)groupOfStudents);
_context.SaveChanges();
foreach (var studentId in groupOfStudents.StudentsIds)
{
var student = _context.Students.Single(s => s.Id == studentId);
student.GroupOfStudentId = groupOfStudents.Id;
student.PaymentTypeId = groupOfStudents.PaymentTypeId;
student.IsVIP = groupOfStudents.IsVIP;
student.PaymentDate = DateTime.Today.AddDays(new PaymentTypes().GetPaymentType(groupOfStudents.PaymentTypeId).DaysToPay);
new Student().Update(student);
}
return(groupOfStudents);
}
public bool Delete(IGroupOfStudents groupOfStudents)
{
_context.GroupOfStudents.Remove((GroupOfStudents)groupOfStudents);
return(true);
}