we delete the objExercise from the session in order to get the latest
changes in the exercise */
if (api_is_allowed_to_edit(null, true) && isset($_GET['preview']) && $_GET['preview'] == 1) {
Session::erase('objExercise');
}
// 1. Loading the $objExercise variable
if (!isset($_SESSION['objExercise']) || $_SESSION['objExercise']->id != $_REQUEST['exerciseId']) {
// Construction of Exercise
$objExercise = new Exercise();
Session::write('firstTime', true);
if ($debug) {
error_log('1. Setting the $objExercise variable');
}
unset($_SESSION['questionList']);
// if the specified exercise doesn't exist or is disabled
if (!$objExercise->read($exerciseId) || !$objExercise->selectStatus() && !$is_allowedToEdit && $origin != 'learnpath') {
if ($debug) {
error_log('1.1. Error while reading the exercise');
}
unset($objExercise);
$error = get_lang('ExerciseNotFound');
} else {
// Saves the object into the session
Session::write('objExercise', $objExercise);
if ($debug) {
error_log('1.1. $_SESSION[objExercise] was unset - set now - end');
}
}
} else {
Session::write('firstTime', false);
}
/**
* This function exports the given Chamilo test
* @param integer Test ID
* @return string The test itself as an HTML string
*/
function export_exercise($item_id)
{
global $expdir, $_course, $_configuration, $_SESSION, $_SERVER, $language_interface, $langExerciseNotFound, $langQuestion, $langOk, $origin, $questionNum;
$exerciseId = $item_id;
require_once '../exercice/exercise.class.php';
require_once '../exercice/question.class.php';
require_once '../exercice/answer.class.php';
$TBL_EXERCISES = Database::get_course_table(TABLE_QUIZ_TEST);
/* Clears the exercise session */
if (isset($_SESSION['objExercise'])) {
Session::erase('objExercise');
}
if (isset($_SESSION['objQuestion'])) {
Session::erase('objQuestion');
}
if (isset($_SESSION['objAnswer'])) {
Session::erase('objAnswer');
}
if (isset($_SESSION['questionList'])) {
Session::erase('questionList');
}
if (isset($_SESSION['exerciseResult'])) {
Session::erase('exerciseResult');
}
// If the object is not in the session:
if (!isset($_SESSION['objExercise'])) {
// Construction of Exercise.
$objExercise = new Exercise();
$sql = "SELECT title,description,sound,type,random,active FROM {$TBL_EXERCISES} WHERE iid='{$exerciseId}'";
// If the specified exercise doesn't exist or is disabled:
if (!$objExercise->read($exerciseId) || !$objExercise->selectStatus() && !api_is_allowed_to_edit() && $origin != 'learnpath') {
die($langExerciseNotFound);
}
// Saves the object into the session.
Session::write('objExercise', $objExercise);
}
$exerciseTitle = $objExercise->selectTitle();
$exerciseDescription = $objExercise->selectDescription();
$exerciseSound = $objExercise->selectSound();
$randomQuestions = $objExercise->isRandom();
$exerciseType = $objExercise->selectType();
if (!isset($_SESSION['questionList'])) {
// Selects the list of question ID.
$questionList = $randomQuestions ? $objExercise->selectRandomList() : $objExercise->selectQuestionList();
// Saves the question list into the session.
Session::write('questionList', $questionList);
}
$nbrQuestions = sizeof($questionList);
// If questionNum comes from POST and not from GET:
if (!$questionNum || $_POST['questionNum']) {
// Only used for sequential exercises (see $exerciseType).
if (!$questionNum) {
$questionNum = 1;
} else {
$questionNum++;
}
}
$test .= "<h3>" . $exerciseTitle . "</h3>";
if (!empty($exerciseSound)) {
$test .= "<a href=\"../document/download.php?doc_url=%2Faudio%2F" . $exerciseSound . "\"&SQMSESSID=36812c2dea7d8d6e708d5e6a2f09b0b9 target=\"_blank\"><img src=\"../img/sound.gif\" border=\"0\" align=\"absmiddle\" alt=" . get_lang("Sound") . "\" /></a>";
}
// Writing the .js file with to check the correct answers begin.
$scriptfilename = "Exercice" . $item_id . ".js";
$s = "<script type=\"text/javascript\" src='../js/" . $scriptfilename . "'></script>";
$test .= $s;
$content = "function evaluate() {\n alert('Test evaluated.');\n }\n ";
if (!($handle = fopen($expdir . '/js/' . $scriptfilename, 'w'))) {
echo "Cannot open file ({$scriptfilename})";
}
if (fwrite($handle, $content) === false) {
echo "Cannot write to file ({$filename})";
exit;
}
fclose($handle);
// Writing the .js file with to check the correct answers end.
$s = "\n <p>{$exerciseDescription}</p>\n <table width='100%' border='0' cellpadding='1' cellspacing='0'>\n <form method='post' action=''><input type=\"hidden\" name=\"SQMSESSID\" value=\"36812c2dea7d8d6e708d5e6a2f09b0b9\" />\n <input type='hidden' name='formSent' value='1' />\n <input type='hidden' name='exerciseType' value='" . $exerciseType . "' />\n <input type='hidden' name='questionNum' value='" . $questionNum . "' />\n <input type='hidden' name='nbrQuestions' value='" . $nbrQuestions . "' />\n <tr>\n <td>\n <table width='100%' cellpadding='4' cellspacing='2' border='0'>";
$exerciseType = 1;
// So to list all questions in one page.
$test .= $s;
$i = 0;
foreach ($questionList as $questionId) {
$i++;
// For sequential exercises.
if ($exerciseType == 2) {
// If it is not the right question, goes to the next loop iteration.
if ($questionNum != $i) {
continue;
} else {
// if the user has already answered this question:
if (isset($exerciseResult[$questionId])) {
// Construction of the Question object.
$objQuestionTmp = new Question();
// Reads question informations.
$objQuestionTmp->read($questionId);
$questionName = $objQuestionTmp->selectTitle();
// Destruction of the Question object.
unset($objQuestionTmp);
$test .= '<tr><td>' . get_lang('AlreadyAnswered') . ' "' . $questionName . '"</td></tr>';
break;
}
}
}
echo $s = "<tr bgcolor='#e6e6e6'><td valign='top' colspan='2'>" . get_lang('Question') . " ";
// Call the showQuestion(). This basically displays the question in a table.
$question_obj = Question::read($questionId);
$test .= $objExercise->showQuestion($question_obj, false, 'export', $i);
}
// end foreach()
$s = "</table></td></tr><tr><td><br/><input type='button' value='" . $langOk . "' onclick=\"javascript: evaluate(); alert('Evaluated.');\">";
$s .= "</td></tr></form></table>";
$s .= "<script type='text/javascript'> loadPage(); </script>";
$b = 2;
$test .= $s;
return $test;
}
}
//Checks if an exercise ID exists in the URL
//and if so it gets the exercise object either by the session (if it exists there)
//or by initializing it using the exercise ID
if (isset($_REQUEST['exerciseId'])) {
$exerciseId = intval($_REQUEST['exerciseId']);
// Checks if exercise object exists in the Session
if (isset($_SESSION['objExercise'][$exerciseId])) {
$objExercise = $_SESSION['objExercise'][$exerciseId];
} else {
// construction of Exercise
$objExercise = new Exercise();
// if the specified exercise is disabled (this only applies to students)
// or doesn't exist redirects and shows error
if (!$objExercise->read($exerciseId) || (!$is_editor && $objExercise->selectStatus($exerciseId)==0)) {
session::Messages($langExerciseNotFound);
redirect_to_home_page('modules/exercise/index.php?course='.$course_code);
}
// saves the object into the session
$_SESSION['objExercise'][$exerciseId] = $objExercise;
}
} else {
redirect_to_home_page('modules/exercise/index.php?course='.$course_code);
}
//Initialize attempts timestamp
if(isset($_POST['attempt_value']) && !isset($_GET['eurId'])){
$attempt_value = $_POST['attempt_value'];
}elseif (isset($_GET['eurId'])) { //reinitialize paused attempt
//If there is a paused attempt get it
