protected function body()
{
$inputs = array('lecture' => 'isIndex', 'text' => 'isNotEmpty', 'type' => array('isEnum' => array('text', 'choice', 'multi')));
if (!$this->isInputValid($inputs)) {
return false;
}
$lectureId = $this->getParams('lecture');
$text = $this->getParams('text');
$type = $this->getParams('type');
$id = $this->getParams('id');
$isIdSet = $id !== null && $id !== '';
$options = $this->getParams('options') . '';
$attachments = $this->getParams('attachments') . '';
if (!$this->checkTestGenerationPrivileges($lectureId)) {
return $this->death(StringID::InsufficientPrivileges);
}
$visibleAttachments = CommonQueries::GetAttachmentsVisibleToActiveUser();
$attTmp = $attachments ? explode(';', $attachments) : array();
foreach ($visibleAttachments as $va) {
$aId = $va->getId();
$index = array_search($aId, $attTmp);
if ($index !== false) {
array_splice($attTmp, $index, 1);
if ($va->getLecture()->getId() != $lectureId) {
return $this->death(StringID::AttachmentBelongsToAnotherLecture);
}
}
}
if (count($attTmp)) {
return $this->stop(ErrorCause::invalidInput('Following attachment IDs are invalid or inaccessible: ' . implode(', ', $attTmp) . '.', 'attachments'));
}
/** @var \Question $question */
$question = null;
if (!$isIdSet) {
$question = new \Question();
} else {
$question = Repositories::findEntity(Repositories::Question, $id);
if ($question->getLecture()->getId() != $lectureId) {
// This must be a weak comparison, because lectureId comes from user and is text.
return $this->death(StringID::HackerError);
}
}
$question->setAttachments($attachments);
/** @var \Lecture $lecture */
$lecture = Repositories::findEntity(Repositories::Lecture, $lectureId);
$question->setLecture($lecture);
$question->setOptions($options);
$question->setText($text);
$question->setType($type);
Repositories::persistAndFlush($question);
return true;
}
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;
}
/**
* Checks whether required handler arguments are set and fit supplied constraints [stopping].
* @param array $fields associative array of fields and their validation filters
* @code
* array(
* '<argument name>' => array(\<FILTER\>, ...),
* [...]
* )
* @endcode
* where \<FILTER\> is either filter name string (must be accepted by Validator::validate()
* as second argument) or array key-value pair with filter name as key and
* filter options array as value, e.g.:
* @code
* array(
* 'id' => array('isId'),
* 'name' => array(
* 'isAlphaNumeric',
* 'hasLength' => array(
* 'min_length' => 5,
* 'max_length' => 15,
* ),
* ),
* )
* @endcode
* @return bool true if arguments for all supplied keys are set and valid to supplied constraints
* @see isInputSet()
* @see Validator
*/
protected final function isInputValid($fields)
{
if (!$this->isInputSet(array_keys($fields))) {
return false;
}
foreach ($fields as $name => $filters) {
if ($filters === null) {
continue;
}
if (!is_array($filters)) {
$filters = array($filters => array());
}
foreach ($filters as $filter => $options) {
if (is_int($filter)) {
$filter = $options;
$options = array();
}
$details = Validator::validate($this->getParams($name), $filter, $options);
if ($details) {
if ($details === true) {
return $this->stop(ErrorCode::inputInvalid, null, "key: '{$name}'");
} else {
return $this->stop(ErrorCause::invalidInput($details, $name));
}
}
}
}
return true;
}
