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https://github.com/moodle/moodle.git
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340 lines
11 KiB
PHP
340 lines
11 KiB
PHP
<?php // $Id$
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// This page prints a particular instance of quiz
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require_once("../../config.php");
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require_once("locallib.php");
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optional_variable($id); // Course Module ID, or
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optional_variable($q); // quiz ID
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if ($id) {
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if (! $cm = get_record("course_modules", "id", $id)) {
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error("Course Module ID was incorrect");
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}
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if (! $course = get_record("course", "id", $cm->course)) {
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error("Course is misconfigured");
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}
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if (! $quiz = get_record("quiz", "id", $cm->instance)) {
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error("Course module is incorrect");
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}
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} else {
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if (! $quiz = get_record("quiz", "id", $q)) {
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error("Course module is incorrect");
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}
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if (! $course = get_record("course", "id", $quiz->course)) {
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error("Course is misconfigured");
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}
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if (! $cm = get_coursemodule_from_instance("quiz", $quiz->id, $course->id)) {
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error("Course Module ID was incorrect");
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}
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}
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require_login($course->id, false, $cm);
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/// Set number for next attempt:
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if ($attempts = quiz_get_user_attempts($quiz->id, $USER->id)) {
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$attemptnumber = 2;
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foreach ($attempts as $attempt) {
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if ($attempt->attempt >= $attemptnumber) {
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$attemptnumber = $attempt->attempt + 1;
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}
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}
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} else {
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$attemptnumber = 1;
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}
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$strattemptnum = get_string("attempt", "quiz", $attemptnumber);
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// Print the page header
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if (!empty($quiz->popup)) {
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define('MESSAGE_WINDOW', true); // This prevents the message window coming up
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print_header("$course->shortname: $quiz->name", '', '', '', '', false, '', '', false, '');
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} else {
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$strquizzes = get_string("modulenameplural", "quiz");
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$strquiz = get_string("modulename", "quiz");
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print_header_simple("$quiz->name", "",
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"<a href=\"index.php?id=$course->id\">$strquizzes</a> ->
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<a href=\"view.php?id=$cm->id\">$quiz->name</a> -> $strattemptnum",
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"", "", true);
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}
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echo '<div id="overDiv" style="position:absolute; visibility:hidden; z-index:1000;"></div>'; // for overlib
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/// Check availability
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if ($quiz->attempts and $attempts and count($attempts) >= $quiz->attempts) {
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error("Sorry, you've had $quiz->attempts attempts already.", "view.php?id=$cm->id");
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}
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/// Check subnet access
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if ($quiz->subnet and !address_in_subnet(getremoteaddr(), $quiz->subnet)) {
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error(get_string("subneterror", "quiz"), "view.php?id=$cm->id");
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}
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/// Check password access
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if ($quiz->password and empty($_POST['q'])) {
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if (empty($_POST['quizpassword'])) {
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print_heading($quiz->name);
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print_heading(get_string("attempt", "quiz", $attemptnumber));
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if (trim(strip_tags($quiz->intro))) {
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print_simple_box(format_text($quiz->intro), "center");
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}
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echo "<br />\n";
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echo "<form name=\"passwordform\" method=\"post\" action=\"attempt.php?id=$cm->id\">\n";
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print_simple_box_start("center");
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echo "<div align=\"center\">\n";
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print_string("requirepasswordmessage", "quiz");
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echo "<br /><br />\n";
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echo " <input name=\"quizpassword\" type=\"password\" value=\"\" alt=\"password\" />";
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echo " <input type=\"submit\" value=\"".get_string("ok")."\" />\n";
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echo "</div>\n";
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print_simple_box_end();
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echo "</form>\n";
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if (empty($quiz->popup)) {
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print_footer($course);
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}
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exit;
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} else {
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if (strcmp($quiz->password, $_POST['quizpassword']) !== 0) {
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error(get_string("passworderror", "quiz"), "view.php?id=$cm->id");
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}
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unset($_POST['quizpassword']); /// needed so as not to confuse later code dealing with submitted answers
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}
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}
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/// Get time limit if any.
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$timelimit = $quiz->timelimit * 60;
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$unattempt = quiz_get_user_attempt_unfinished($quiz->id, $USER->id);
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if($timelimit > 0) {
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$timestart = $unattempt->timestart;
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if($timestart) {
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$timesincestart = time() - $timestart;
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$timerstartvalue = $timelimit - $timesincestart;
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} else {
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$timerstartvalue = $timelimit;
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}
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}
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if($timelimit and $timerstartvalue <= 0) {
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$timerstartvalue = 1;
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}
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$timenow = time();
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$available = ($quiz->timeopen < $timenow and $timenow < $quiz->timeclose) || isteacher($course->id);
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/// Check to see if they are submitting answers
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if ($rawanswers = data_submitted()) {
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$rawanswers = (array)$rawanswers;
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$shuffleorder = NULL;
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unset($rawanswers["q"]); // quiz id
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if (! count($rawanswers) and ! $timelimit) {
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print_heading(get_string("noanswers", "quiz"));
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print_continue("attempt.php?q=$quiz->id");
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exit;
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}
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if (!$questions = get_records_list("quiz_questions", "id", $quiz->questions)) {
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error("No questions found!");
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}
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foreach ($rawanswers as $key => $value) { // Parse input for question->response
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if ($postedquestionid = quiz_extract_posted_id($key)) {
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$questions[$postedquestionid]->response[$key] = trim($value);
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} else if ('shuffleorder' == $key) {
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$shuffleorder = explode(",", $value); // Actual order questions were given in
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} else if ('navigation' == $key) {
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$navigation = $value; // Determines next page to show in quiz
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} else { // Useful for debugging new question types. Must be last.
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error("Unrecognizable input has been posted ($key -> $value)");
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}
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}
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/// Retrieve ->maxgrade for all questions
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If (!($grades = quiz_get_question_grades($quiz->id, $quiz->questions))) {
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$grades = array();
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}
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foreach ($grades as $qid => $grade) {
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$questions[$qid]->maxgrade = $grade->grade;
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}
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if (isset($timesincestart)) {
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$quiz->timesincestart = $timesincestart; // To pass it on to quiz_grade_responses
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}
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if (!$result = quiz_grade_responses($quiz, $questions, $unattempt->id)) {
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error("Could not grade your quiz attempt!");
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}
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if ($attempt = quiz_save_attempt($quiz, $questions, $result,
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$attemptnumber, 0 == $navigation)) {
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if (empty($navigation)) {
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add_to_log($course->id, "quiz", "submit",
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"review.php?id=$cm->id&attempt=$attempt->id", "$quiz->id", $cm->id);
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}
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} else {
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notice(get_string("alreadysubmitted", "quiz"), "view.php?id=$cm->id");
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if (empty($quiz->popup)) {
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print_footer($course);
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}
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exit;
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}
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if (empty($navigation)) {
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/// Attempt has finished
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if (! quiz_save_best_grade($quiz, $USER->id)) {
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error("Sorry! Could not calculate your best grade!");
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}
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if (empty($quiz->popup) and !$quiz->feedback) {
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// No need to stop on this page, go directly to view.php
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redirect('view.php?q='.$quiz->id);
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}
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$strgrade = get_string("grade");
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$strscore = get_string("score", "quiz");
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if ($quiz->grade) {
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print_heading("$strscore: $result->sumgrades/$quiz->sumgrades ($result->percentage %)");
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print_heading("$strgrade: $result->grade/$quiz->grade");
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}
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/// continue button - use javascript to close down child window if in popup
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include('attempt_close_js.php');
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if ($quiz->feedback) {
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$quiz->shuffleanswers = false; // Never shuffle answers in feedback
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/// Make sure to get all questions in case not all are shown
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/// in quiz all the time.
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$questions = quiz_get_attempt_questions($quiz, $attempt);
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quiz_print_quiz_questions($quiz, $questions,
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quiz_grade_responses($quiz, $questions, $unattempt->id),
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$shuffleorder);
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/// continue button - use javascript to close down child window if in popup
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include('attempt_close_js.php');
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}
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if (empty($quiz->popup)) {
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print_footer($course);
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}
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exit;
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}
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} else {
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$navigation= 1;
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$shuffleorder= NULL;
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}
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/// Print the quiz page
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if (isguest()) {
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print_heading(get_string("guestsno", "quiz"));
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if (empty($quiz->popup)) {
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print_footer($course);
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}
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exit;
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}
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/// Actually seeing the questions marks the start of an attempt
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if (isset($unattempt) && $unattempt) {
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$attempt = $unattempt;
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} else if ($attempt = quiz_start_attempt($quiz->id, $USER->id, $attemptnumber)) {
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add_to_log($course->id, "quiz", "attempt",
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"review.php?id=$cm->id&attempt=$attempt->id", "$quiz->id", $cm->id);
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} else {
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error("Sorry! Could not start the quiz (could not save starting time)");
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}
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/// First print the headings and so on
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print_heading($quiz->name);
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if (!$available) {
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error("Sorry, this quiz is not available", "view.php?id=$cm->id");
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}
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print_heading(get_string("attempt", "quiz", $attemptnumber));
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if (trim(strip_tags($quiz->intro))) {
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print_simple_box(format_text($quiz->intro), "center");
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}
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/// Add the javascript timer in the title bar if the closing time appears close
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$secondsleft = $quiz->timeclose - time();
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if ($secondsleft > 0 and $secondsleft < 24*3600) { // less than a day remaining
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include("jsclock.php");
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}
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/// Include Javascript protection for this page if required
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if (!empty($quiz->popup)) {
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include("protect_js.php");
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}
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/// Print all the questions
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echo "<br />";
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$questions = quiz_get_attempt_questions($quiz, $attempt, true);
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if ($quiz->attemptonlast && $attemptnumber >= 2 and
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$quiz->attempts == 0 || !$unattempt) {
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// There are unlimited attempts or it is a new attempt.
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// As the attempt also builds on the last, we can here
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// have the student see the scores of the pre-entered
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// responses that we here will have graded:
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$result = quiz_grade_responses($quiz, $questions);
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$result->attemptbuildsonthelast = true;
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} else {
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$result = NULL;
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}
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// We do not show feedback or correct answers during an attempt:
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$quiz->feedback = $quiz->correctanswers = false;
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if (!quiz_print_quiz_questions($quiz, $questions,
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$result, $shuffleorder, $navigation)) {
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print_continue("view.php?id=$cm->id");
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}
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/// If quiz is available and time limit is set include floating timer.
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if ($available and $timelimit > 0) {
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require('jstimer.php');
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}
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if (empty($quiz->popup)) {
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print_footer($course);
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}
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?>
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