function init()
{
$this->exam_hash = array_shift($this->param);
$this->page = array_shift($this->param);
$course = new Course();
$training = new Training();
$t_data = $training->get(array('exam_hash' => $this->exam_hash, 'user_id' => $_SESSION['user_id']));
$c_data = $course->get(array('id' => $t_data['course_id']));
switch ($t_data['status_id']) {
case Training::EXAM:
// fill table "exams" with questions from table "questions"
// via cross select course_id and question_id
if (intval($c_data['exam_duration']) < 1) {
$c_data['exam_duration'] = 30;
}
$training->update($t_data['id'], array('status_id' => Training::EXAM_STARTED, 'exam_started' => date('Y-m-d H:i', time()), 'finished' => date('Y-m-d H:i', time() + $c_data['exam_duration'] * 60)));
$question = new Question();
$enum = $question->enumerateIDs(array('course_id' => $t_data['course_id']));
foreach ($enum as $val) {
$questions[] = $val['id'];
}
$exam = new Exam();
srand();
shuffle($questions);
for ($i = 0; $i < $c_data['questions']; $i++) {
$question_id = array_shift($questions);
if (!isset($question_id)) {
break;
}
$exam->add(array('question_id' => $question_id, 'training_id' => $t_data['id']));
}
header("Location: /exam/{$this->exam_hash}/0");
exit;
break;
case Training::EXAM_STARTED:
if (isset($_POST['answer'])) {
if (is_array($_POST['answer'])) {
$_POST['answer'] = implode(',', $_POST['answer']);
}
$exam = new Exam();
$e_data = $exam->get(array('id' => $_POST['id'], 'training_id' => $t_data['id']));
$exam->update($e_data['id'], array('answer' => $_POST['answer']));
$this->page++;
header("Location: /exam/{$this->exam_hash}/{$this->page}");
exit;
}
break;
default:
header('Location: /403');
exit;
}
}
