public StudentVm AttachStudentToGroup(AttachDetachStudentToGroupDto attachStudentToGroupDto)
{
if (attachStudentToGroupDto == null)
{
throw new ArgumentNullException($"Dto of type is null");
}
var student = _dbContext.Users.OfType <Student>().FirstOrDefault(t => t.Id == attachStudentToGroupDto.StudentId);
if (student == null || !_userManager.IsInRoleAsync(student, "Student").Result)
{
throw new ArgumentNullException($"Student is null or user is not student");
}
var group = _dbContext.Groups.FirstOrDefault(x => x.Id == attachStudentToGroupDto.GroupId);
if (group == null)
{
throw new ArgumentNullException($"group is null");
}
student.GroupId = group.Id;
student.Group = group;
_dbContext.SaveChanges();
var studentVm = Mapper.Map <StudentVm>(student);
return(studentVm);
}
private IActionResult AttachDetachGetView(int studentId)
{
var students = _studentService.GetStudents();
var groups = _groupService.GetGroups();
var currentStudent = students.FirstOrDefault(x => x.Id == studentId);
if (currentStudent == null)
{
throw new ArgumentNullException("studentId not exists.");
}
var attachDetachStudentToGroupDto = new AttachDetachStudentToGroupDto
{
StudentId = currentStudent.Id
};
ViewBag.SubjectList = new SelectList(students.Select(s => new
{
Text = $"{s.FirstName} {s.LastName}",
Value = s.Id,
Selected = s.Id == currentStudent.Id
}), "Value", "Text");
ViewBag.GroupList = new SelectList(groups.Select(s => new
{
Text = s.Name,
Value = s.Id
}), "Value", "Text");
return(View("AttachDetachStudentToGroup", attachDetachStudentToGroupDto));
}
public IActionResult AttachStudentToGroup(AttachDetachStudentToGroupDto attachDetachStudentToGroupDto)
{
if (ModelState.IsValid)
{
_groupService.AttachStudentToGroup(attachDetachStudentToGroupDto);
return(RedirectToAction("Index"));
}
return(View());
}
public IActionResult DetachStudentFromGroup(AttachDetachStudentToGroupDto attachDetachStudentToGroup)
{
if (ModelState.IsValid)
{
_groupService.DetachStudentFromGroup(attachDetachStudentToGroup);
return(RedirectToAction("ViewStudents", "Student"));
}
return(View());
}
