protected function body()
{
$questions = $this->getParams('questions');
if ($questions === null || $questions === '') {
return $this->death(StringID::ChooseAtLeastOneQuestion);
// Put this in front to have a more specific, comprehensible error message
}
$inputs = array('description' => 'isNotEmpty', 'count' => 'isNonNegativeInt', 'questions' => 'isNotEmpty');
if (!$this->isInputValid($inputs)) {
return false;
}
$description = $this->getParams('description');
$count = $this->getParams('count');
$questions = $this->getParams('questions');
$questionsArray = explode(',', $questions);
$visibleQuestions = CommonQueries::GetQuestionsVisibleToActiveUser();
/**
* @var $lecture \Lecture
*/
$lecture = null;
foreach ($visibleQuestions as $vq) {
$qId = $vq->getId();
$index = array_search($qId, $questionsArray);
if ($index !== false) {
array_splice($questionsArray, $index, 1);
if ($lecture === null) {
$lecture = $vq->getLecture();
} elseif ($lecture->getId() !== $vq->getLecture()->getId()) {
return $this->death(StringID::TestCannotContainQuestionsOfDifferentLectures);
}
}
}
if (count($questionsArray)) {
return $this->stop(ErrorCause::invalidInput('Following question IDs are invalid or inaccessible: ' . implode(', ', $questionsArray) . '.', 'questions'));
}
if ($lecture === null) {
return $this->death(StringID::ChooseAtLeastOneQuestion);
}
if (!$this->checkTestGenerationPrivileges($lecture->getId())) {
return $this->death(StringID::InsufficientPrivileges);
}
$randomized = $this->generateTest($questions, $count);
$xtest = new \Xtest();
$xtest->setDescription($description);
$xtest->setCount($count);
$xtest->setLecture($lecture);
$xtest->setTemplate($questions);
$xtest->setGenerated(implode(',', $randomized));
Repositories::persistAndFlush($xtest);
return true;
}
