public IActionResult CheckIfParticipant(int id) { var userId = User.GetUserId(); var student = _studentService.GetStudentByUserId(userId); var studentId = student.Id; var wasParticipant = _internshipService.CheckIfStudentWasParticipant(id, studentId); return(Ok(new ParticipantViewModel() { WasParticipant = wasParticipant })); }