public 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 attachDetachStudentToGroup = new AttachDetachStudentToGroup
{
StudentId = currentStudent.Id
};
ViewBag.StudentList = new SelectList(students.Select(s => new
{
Text = $"{s.FirstName}{s.LastName}",
Value = s.Id,
Selected = s.Id
}), "Value", "Text");
ViewBag.GroupsList = new SelectList(groups.Select(g => new
{
Text = g.Name,
Value = g.Id,
Selected = g.Id
}), "Value", "Text");
return(View("AttachStudentToGroup", attachDetachStudentToGroup));
}
public StudentVm AttachStudentToGroup(AttachDetachStudentToGroup attachDetachStudentToGroup)
{
if (attachDetachStudentToGroup == null)
{
throw new Exception("attach is null");
}
var student = _dbContext.Users.OfType <Student>().FirstOrDefault(x => x.Id == attachDetachStudentToGroup.StudentId);
if (student == null)
{
throw new Exception("student is null");
}
var group = _dbContext.Groups.FirstOrDefault(x => x.Id == attachDetachStudentToGroup.GroupId);
if (group == null)
{
throw new Exception("group is null");
}
student.GroupId = group.Id;
_dbContext.SaveChanges();
var studentVm = Mapper.Map <StudentVm>(student);
return(studentVm);
}
public IActionResult AttachStudentToGroup(AttachDetachStudentToGroup attachDetachStudentToGroupDto)
{
if (ModelState.IsValid)
{
_groupService.AttachStudentToGroup(attachDetachStudentToGroupDto);
return(RedirectToAction("Index"));
}
return(View());
}
