function addQuiz(Model_Quiz_Quiz $quiz)
{
$db = Zend_Registry::get('db');
$current = $this->getQuizzes();
try {
$db->insert("sequence_quiz", array('quiz_id' => $quiz->getID(), 'sequence_id' => $this->id, 'position' => count($current) + 1));
return true;
} catch (Exception $e) {
My_Logger::log($e->getMessage());
return false;
}
}
public function getQuiz()
{
return Model_Quiz_Quiz::fromID($this->quizquiz_id);
}
/**
* This action is the quiz shell.
* It ensures permissions, creates new attempts etc etc.
*
* @author Ben Evans
*/
public function attemptAction()
{
Model_Shell_Debug::getInstance()->log("User Entered the Attempt Action");
$identity = Zend_Auth::getInstance()->getIdentity();
$username = $identity->username;
$auth_model = Model_Auth_General::getAuthModel();
/* Before we do anything, test to make sure we've passed a VALID QUIZ which WE ARE ENTITLED to sit. */
$quiz_id = $this->_getParam("quiz");
if (is_null($quiz_id)) {
throw new Exception("No quiz was passed. Cannot continue.");
}
$vQuiz = Model_Quiz_Quiz::fromID($quiz_id);
if ($vQuiz == null) {
throw new Exception("Quiz ID passed was invalid. Cannot continue.");
}
$mFinished = false;
$mMarking = false;
//Permissions
if ($auth_model->userInGroup($username, $vQuiz->getPermissions_group()) && $vQuiz->getOpen_date() <= strtotime("now")) {
//Have we run out of attempts?
$vAttempts = Model_Quiz_QuizAttempt::getAllFromUser($username, $vQuiz);
if (sizeof($vAttempts) >= $vQuiz->getMax_attempts()) {
//It is possible that we're on our last attempt, and that it's "in progress"...check
$bInProgress = false;
foreach ($vAttempts as $vAttempt) {
if ($vAttempt->getDate_finished() == null) {
$bInProgress = true;
}
}
if (!$bInProgress) {
throw new Exception("You've exceeded your maximum attempts for this quiz. Cannot continue");
}
}
} else {
if (!$this->view->is_admin) {
throw new Exception("Insufficient Permissions to take this quiz / Quiz not open yet");
}
$vAttempts = Model_Quiz_QuizAttempt::getAllFromUser($username, $vQuiz);
}
/* Ok. We're allowed to TAKE the quiz. Are we resuming, or starting a new one? */
$mQuizAttempt = null;
if (is_array($vAttempts)) {
foreach ($vAttempts as $vAttempt) {
if ($vAttempt->getDate_finished() == null) {
$mQuizAttempt = $vAttempt;
break;
}
}
//End Foreach
}
//End If
if ($mQuizAttempt == null) {
$mQuizAttempt = Model_Quiz_QuizAttempt::fromScratch(strtotime("now"), $vQuiz, $username);
}
/* Calculate the total questions needed for this quiz */
$vTCs = $vQuiz->getTestedConcepts();
$vTotalQuestions = 0;
foreach ($vTCs as $vTC) {
$vTotalQuestions = $vTotalQuestions + $vTC->getNumber_tested();
}
/* We have our quizAttempt ready to go. Now we look to see if we're resuming a question or not */
$mQuestionAttempt = $mQuizAttempt->getLastIncompleteQuestion();
if (is_object($mQuestionAttempt) && !$mQuestionAttempt->isValid()) {
$mQuestionAttempt->destroy();
// Remove the Question attempt (Database was reinitialised or something)
$mQuestionAttempt = null;
}
if ($mQuestionAttempt != null) {
/* Are we getting an ANSWER for this question? */
if (array_key_exists("marking", $_POST) && $_POST['marking'] == "1") {
/* Mark it */
$mMarking = true;
}
/* If we reach here, the page has probably been refreshed. We just re-display the last question */
} else {
/* Have we finished this quiz? */
if ($mQuizAttempt->getQuestionAttemptCount() >= $vTotalQuestions) {
//Close this attempt and display a result later on down the page
$mQuizAttempt->setDate_finished(strtotime("now"));
//Calculate and store the final score
$mQuizAttempt->setTotal_score($mQuizAttempt->getTotal_score());
$mFinished = true;
} else {
/* QuizAttempt isn't finished... Fetch a questionBase */
$vQuestionBase = Model_Shell_QuestionChooser::select_next_question($mQuizAttempt, true);
/* Make a GeneratedQuestion */
$vCounter = 0;
//Make sure we don't get any fluke no-text answers
while ($vCounter < 3) {
Model_Shell_Debug::getInstance()->log("vQuestionBase: " . isset($vQuestionBase));
Model_Shell_Debug::getInstance()->log("Generating... from " . $vQuestionBase->getXml());
$vGen = Model_Quiz_GeneratedQuestion::fromQuestionBase($vQuestionBase);
if ($vGen->getCorrect_answer() != "" && $vGen->getCorrect_answer() != "\r\n") {
break;
} else {
$vGen->remove();
}
$vCounter++;
}
if ($vGen->getCorrect_answer() == "" || $vGen->getCorrect_answer() == "\r\n") {
throw new Exception("Error. While generating a question for you, blank answers appeared > 3 times. This should never happen. Either try to refresh this page, or consult your lecturer...");
}
/* Make a QuestionAttempt */
$mQuestionAttempt = Model_Quiz_QuestionAttempt::fromScratch($vQuestionBase, strtotime("now"), strtotime("now"), $mQuizAttempt, $vGen);
}
//End-if_finished_quizAttempt
}
// Pass all relevant information to the view
$this->view->quiz = $vQuiz;
$this->view->question_attempt = $mQuestionAttempt;
$this->view->finished = $mFinished;
$this->view->marking = $mMarking;
$this->view->mQuizAttempt = $mQuizAttempt;
$this->view->vTotalQuestions = $vTotalQuestions;
}
protected function findQuiz($quiz_id)
{
if (is_null($quiz_id)) {
throw new Exception("No quiz was passed. Cannot continue.");
}
$quiz = Model_Quiz_Quiz::fromID($quiz_id);
if ($quiz == null) {
throw new Exception("Quiz ID passed was invalid. Cannot continue.");
}
return $quiz;
}
/**
* Shows Pass/Fail for a given class [Group]
*/
public function passfailAction()
{
$group = $this->_getParam("group");
$this->view->group = $group;
// Pass ALL the groups to the view (to select)
$all_groups = array();
$all_quizzes = Model_Quiz_Quiz::getAll();
foreach ($all_quizzes as $quiz) {
$all_groups[] = $quiz->getPermissions_group();
}
$all_groups = array_unique($all_groups);
sort($all_groups);
$this->view->all_groups = $all_groups;
// If we've SELECTED a group...
if (!is_null($group)) {
$group = strtolower($group);
// Group Members
$members = Model_Auth_ActiveDirectory::getUsersFromGroup($group);
$keyed_members = array();
foreach ($members as $member) {
$username = $member;
$member = Model_Auth_ActiveDirectory::getUserDetails($username);
$member['username'] = strtolower($username);
$keyed_members[$username] = $member;
}
// Find all Quizzes that are part of this group
$all_quizzes = Model_Quiz_Quiz::getAll();
$valid_quizzes = array();
foreach ($all_quizzes as $quiz) {
if (strtolower($quiz->getPermissions_group()) == $group) {
$valid_quizzes[] = $quiz;
}
}
// Now go and find all the results for each quiz
$quiz_results = array();
// Key is the quiz ID
foreach ($valid_quizzes as $quiz) {
$set_result = array();
foreach ($keyed_members as $member) {
//Did they pass?
$highest_result = Model_Quiz_QuizAttempt::getHighestMarkQuiz($member['username'], $quiz);
if (is_null($highest_result)) {
$set_result[$member['username']] = "NA";
} else {
if ($highest_result->getTotal_score() / $quiz->getTotalQuestions() * 100 >= $quiz->getPercentage_pass()) {
$set_result[$member['username']] = "<span class='green'>P</span>";
} else {
$set_result[$member['username']] = "<span class='red'>F</span>";
}
}
}
$quiz_results[$quiz->getID()] = $set_result;
}
// Pass all info to the view
$this->view->members = $keyed_members;
$this->view->quizzes = $valid_quizzes;
$this->view->quiz_results = $quiz_results;
}
}
function hasPendingPrerequisite($username)
{
$prereq = $this->getPrerequisite();
if (!$prereq) {
return false;
}
$prereq_question = Model_Quiz_Quiz::fromID($prereq);
// have the user attempted the prerequisites?
$attempt = Model_Quiz_QuizAttempt::fromQuizAndUser($prereq, $username);
if (!$attempt) {
return true;
//prerequisite has not even been attempted
}
// if yes, of all the attempts, has the best score passed the quiz requirement?
if ($attempt->getDate_finished()) {
$best_attempt = Model_Quiz_QuizAttempt::getHighestMarkQuiz($username, $prereq_question);
return !$best_attempt->hasPassedQuiz();
}
return true;
/*
if ($attempt->getDate_finished()==null){
$vQuizStatus = Model_Quiz_Quiz::QUIZ_INPROGRESS;
if($vQuiz->getClose_date() < strtotime("now")){
echo "\t\t<td>In Progress (Late)</td>\n";
}
else{
echo "\t\t<td>In Progress</td>\n";
}
}else{
$vQuizStatus = Model_Quiz_Quiz::QUIZ_COMPLETED;
echo "\t\t<td>Completed</td>\n";
}
*/
}
/**
* This function Caches the local Usernames (and First/Last names)
* from the designated Authentication source (eg. LDAP)
*/
public function syncusernamesAction()
{
$vGroups = array();
$vCounter = 0;
//Get all the quizzes
$vQuizzes = Model_Quiz_Quiz::getAll();
foreach ($vQuizzes as $vQuiz) {
if (!in_array($vQuiz->getPermissions_group(), $vGroups)) {
$vGroups[] = $vQuiz->getPermissions_group();
}
}
//So we have all groups now in the system
foreach ($vGroups as $vGroup) {
//Get the members of this group
$vMembers = Model_Auth_ActiveDirectory::getUsersFromGroup($vGroup);
if (is_array($vMembers) && sizeof($vMembers) > 0) {
foreach ($vMembers as $vMember) {
Model_Auth_ActiveDirectory::updateUser($vMember);
$vCounter++;
}
}
}
$this->view->counter = $vCounter;
}
function createQuiz($name, $permissions, $starts = false, $ends = false, $attempts = 50, $percentage = 100)
{
return Model_Quiz_Quiz::fromScratch($name, $permissions, $starts ?: date('Y-m-d', strtotime("-1 month")), $ends ?: date('Y-m-d', strtotime("+5 month")), $attempts, $percentage);
}
/**
* Shows the Hall of Fame for the Logged in User
*
* @return void
* @author Ben Evans
*/
public function halloffameAction()
{
$this->view->title = "Hall of Fame";
$this->view->headTitle("Hall of Fame");
$identity = Zend_Auth::getInstance()->getIdentity();
$auth_model = Model_Auth_General::getAuthModel();
//Firstly, we have to get the quizzes that we have access to
$vQuizzes = Model_Quiz_Quiz::getAll(true);
$vAvailable = array();
/* Make sure you have permission */
foreach ($vQuizzes as $vQuiz) {
if ($this->view->is_admin) {
$vAvailable[] = $vQuiz;
} else {
if ($auth_model->userInGroup($identity->username, $vQuiz->getPermissions_group()) && $vQuiz->getOpen_date() <= strtotime("now")) {
$vAvailable[] = $vQuiz;
}
}
}
/* Any Quizzes available? */
$quiz_rows = array();
if (sizeof($vAvailable) != 0) {
foreach ($vAvailable as $vQuiz) {
$quiz_row = array();
$quiz_row['name'] = $vQuiz->getName();
$vAttempts = $vQuiz->getQuizAttempts();
$vPassed = array();
if (sizeof($vAttempts) > 0) {
foreach ($vAttempts as $vAttempt) {
//Make sure we're only looking at people who've passed
$vTotalScore = $vAttempt->getTotal_score();
//echo "Comparing " . $vTotalScore . "/". $vQuiz->getTotalQuestions() ." with " . $vQuiz->getPercentage_pass() . "% (".$vAttempt->getID().")<br/>";
if ($vTotalScore / $vQuiz->getTotalQuestions() * 100 >= $vQuiz->getPercentage_pass() && $vAttempt->getDate_finished() != null) {
//echo "Added.<br/>";
$vPassed[] = $vAttempt;
}
}
}
//Did anyone pass?
if (sizeof($vPassed) > 0) {
//Sort results first
usort($vPassed, "sort_by_score");
//Truncate the array if necessary
if (sizeof($vPassed) > MAX_HALLOFFAME) {
array_splice($vPassed, 0, MAX_HALLOFFAME);
}
// And now record the scores
$quiz_row['scores'] = array();
//Now output the scores
foreach ($vPassed as $vp) {
$score_row = array("name" => $vp->getAd_user_cachesamaccountname(), "score" => $vp->getTotal_score(), "time" => $vp->getDate_finished() - $vp->getDate_started());
$quiz_row['scores'][] = $score_row;
}
}
$quiz_rows[] = $quiz_row;
}
//End_foreach_quiz
}
$this->view->quiz_rows = $quiz_rows;
}
public static function getAll($vOrder = false)
{
$db = Zend_Registry::get("db");
$vReturn = array();
$sql = "SELECT * FROM quiz";
if ($vOrder) {
$sql .= " ORDER BY close_date";
}
//echo "SQL: $sql<br/>";
$result = $db->query($sql);
$rows = $result->fetchAll();
foreach ($rows as $row) {
$vReturn[] = Model_Quiz_Quiz::fromID($row['quiz_id']);
}
return $vReturn;
}
