public async Task <IActionResult> Unsubcribe(int id)
{
var subject = await _subjectManager.GetSubjectAsync(id);
if (subject == null)
{
return(NotFound());
}
var user = await GetCurrentUser();
await _subjectManager.UnsubcribeAsync(new ClassRoomSubject()
{
ClassRoomId = user.ClassRoomId,
SubjectId = id
});
return(Ok());
}