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 * @package   mod_quiz
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 * @package   mod_quiz
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 * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
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 * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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 */
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use core\output\notification;
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use mod_quiz\access_manager;
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use mod_quiz\access_manager;
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use mod_quiz\output\list_of_attempts;
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use mod_quiz\output\list_of_attempts;
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use mod_quiz\output\renderer;
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use mod_quiz\output\renderer;
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use mod_quiz\output\view_page;
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use mod_quiz\output\view_page;
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// Trigger course_module_viewed event and completion.
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// Trigger course_module_viewed event and completion.
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quiz_view($quiz, $course, $cm, $context);
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quiz_view($quiz, $course, $cm, $context);
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// Initialize $PAGE, compute blocks.
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// Initialize $PAGE, compute blocks.
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$PAGE->set_url('/mod/quiz/view.php', ['id' => $cm->id]);
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// On the quiz view page, the browser back/forwards buttons should force a reload.
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$PAGE->set_url('/mod/quiz/view.php', ['id' => $cm->id]);
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$PAGE->set_cacheable(false);
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// Create view object which collects all the information the renderer will need.
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// Create view object which collects all the information the renderer will need.
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$viewobj = new view_page();
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$viewobj = new view_page();
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foreach (array_reverse($viewobj->attemptobjs) as $attemptobj) {
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foreach (array_reverse($viewobj->attemptobjs) as $attemptobj) {
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    $viewobj->attemptslist->add_attempt($attemptobj);
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    $viewobj->attemptslist->add_attempt($attemptobj);
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}
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}
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// Work out the final grade, checking whether it was overridden in the gradebook.
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// Work out the final grade, checking whether it was overridden in the gradebook.
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// First, get an initial grade to display.
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if (!$canpreview) {
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if (!$canpreview) {
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    $mygrade = quiz_get_best_grade($quiz, $USER->id);
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    $mygrade = quiz_get_best_grade($quiz, $USER->id);
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} else if ($lastfinishedattempt) {
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} else if ($lastfinishedattempt) {
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    // Users who can preview the quiz don't get a proper grade, so work out a
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    // Users who can preview the quiz don't get a proper grade, so work out a
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    // plausible value to display instead, so the page looks right.
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    // plausible value to display instead, so the page looks right.
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    $mygrade = quiz_rescale_grade($lastfinishedattempt->sumgrades, $quiz, false);
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    $mygrade = quiz_rescale_grade($lastfinishedattempt->sumgrades, $quiz, false);
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} else {
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} else {
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    $mygrade = null;
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    $mygrade = null;
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}
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}
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// Now, check the grade in the gradebook, if there is one.
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$mygradeoverridden = false;
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$mygradeoverridden = false;
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$gradebookfeedback = '';
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$gradebookfeedback = '';
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    'iteminstance' => $quiz->id,
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    'iteminstance' => $quiz->id,
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    'itemnumber' => 0,
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    'itemnumber' => 0,
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    'courseid' => $course->id,
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    'courseid' => $course->id,
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]);
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]);
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// If there's a grade item grade, then get that grade for this user.
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// Users who can preview the quiz (eg teachers) won't have a proper grade,
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// so no point getting their grades here.
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if ($gradeitem) {
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if (!$canpreview && $gradeitem) {
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    if ($gradeitem->refresh_grades($USER->id)) {
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    $grade = $gradeitem->get_grade($USER->id, false);
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    $mygrade = $grade->finalgrade; // Use this grade to display in the view page.
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        $grade = $gradeitem->get_grade($USER->id, false);
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        if ($grade->overridden) {
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    if ($grade->overridden) {
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            if ($gradeitem->needsupdate) {
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        if ($gradeitem->needsupdate) {
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                // It is Error, but let's be consistent with the old code.
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            // It is Error, but let's be consistent with the old code.
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                $mygrade = 0;
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            } else {
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                $mygrade = $grade->finalgrade;
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            }
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            $mygradeoverridden = true;
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            $mygrade = 0;
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        }
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        $mygradeoverridden = true;
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        }
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    }
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        if (!empty($grade->feedback)) {
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            $gradebookfeedback = $grade->feedback;
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        }
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    } else {
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        // It is Error, but let's be consistent with the old code.
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    if (!empty($grade->feedback)) {
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        $mygrade = 0;
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        $gradebookfeedback = $grade->feedback;
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    }
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    }
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}
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}
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}
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}
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$PAGE->add_body_class('limitedwidth');
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$PAGE->add_body_class('limitedwidth');
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/** @var renderer $output */
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/** @var renderer $output */
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$output = $PAGE->get_renderer('mod_quiz');
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$output = $PAGE->get_renderer('mod_quiz');
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// Print table with existing attempts.
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// Print overall stats and table with existing attempts.
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if ($attempts) {
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if ($attempts) {
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    // Work out which columns we need, taking account what data is available in each attempt.
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    // Work out which columns we need, taking account what data is available in each attempt.
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    list($someoptions, $alloptions) = quiz_get_combined_reviewoptions($quiz, $attempts);
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    list($someoptions, $alloptions) = quiz_get_combined_reviewoptions($quiz, $attempts);
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            if ($viewobj->preventmessages) {
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            if ($viewobj->preventmessages) {
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                $viewobj->buttontext = '';
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                $viewobj->buttontext = '';
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            }
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            }
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        }
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        }
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    }
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    }
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    // If the quiz has any invalid questions, we cannot attempt it.
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    if (in_array('missingtype', $quizobj->get_all_question_types_used())) {
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        $viewobj->preventmessages[] = $OUTPUT->notification(
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            get_string('quizinvalidquestions', 'mod_quiz'), notification::NOTIFY_ERROR, false);
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        $viewobj->buttontext = '';
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    }
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}
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}
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$viewobj->showbacktocourse = ($viewobj->buttontext === '' &&
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$viewobj->showbacktocourse = ($viewobj->buttontext === '' &&
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        course_get_format($course)->has_view_page());
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        course_get_format($course)->has_view_page());
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echo $OUTPUT->header();
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echo $OUTPUT->header();
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if (!empty($gradinginfo->errors)) {
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if (!empty($gradinginfo->errors)) {
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    foreach ($gradinginfo->errors as $error) {
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    foreach ($gradinginfo->errors as $error) {
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        $errortext = new \core\output\notification($error, \core\output\notification::NOTIFY_ERROR);
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        $errortext = new notification($error, notification::NOTIFY_ERROR);
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        echo $OUTPUT->render($errortext);
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        echo $OUTPUT->render($errortext);