moodle_local_treestudyplan/classes/local/ungradedscanners/quiz_scanner.php

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<?php
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// This file is part of the Studyplan plugin for Moodle
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <https://www.gnu.org/licenses/>.
/**
*
* @package local_treestudyplan
* @copyright 2023 P.M. Kuipers
* @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace local_treestudyplan\local\ungradedscanners;
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require_once($CFG->dirroot.'/question/engine/states.php'); // For reading question state.
class quiz_scanner extends scanner_base {
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protected function get_ungraded_submissions() {
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// Count all users who have one or more questions that still need grading.
global $DB;
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// First find all question attempts that need grading.
$sql = "SELECT qza.id as submissionid, qza.userid as userid, qas.questionattemptid as attempt_id, qas.sequencenumber as sequencenumber
FROM {question_attempt_steps} qas
JOIN {question_attempts} qna ON qas.questionattemptid = qna.id
JOIN {quiz_attempts} qza ON qna.questionusageid = qza.uniqueid
WHERE qas.state = 'needsgrading' AND qza.quiz = {$this->gi->iteminstance}";
$rs = $DB->get_recordset_sql($sql);
$submissions = [];
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foreach ($rs as $r) {
// Now, check if .
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$maxstatesql = "SELECT MAX(qas.sequencenumber) FROM {question_attempt_steps} qas WHERE qas.questionattemptid = {$r->attempt_id}";
$max = $DB->get_field_sql($maxstatesql);
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if ($r->sequencenumber == $max) {
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$submissions[$r->userid] = true; // Set array index based on user id, to avoid checking if value is in array.
}
}
$rs->close();
return array_keys($submissions);
}
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public function count_ungraded($courseuserids=[]) {
$ungraded = $this->get_ungraded_submissions();
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if (count($courseuserids) > 0) {
$ungraded = array_intersect($ungraded, $courseuserids);
}
return count($ungraded);
}
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public function count_graded($courseuserids=[]) {
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// Count all users who submitted one or more finished tests.
global $DB;
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$sql = "SELECT DISTINCT g.userid
FROM {grade_grades} g
LEFT JOIN {grade_items} gi on g.itemid = gi.id
WHERE gi.itemmodule = 'quiz' AND gi.iteminstance = {$this->gi->iteminstance}
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AND g.finalgrade IS NOT NULL"; // MAy turn out to be needed, dunno.
$graded = $DB->get_fieldset_sql($sql);
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if (count($courseuserids) > 0) {
$graded = array_intersect($graded, $courseuserids);
}
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return count($graded);
}
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public function has_ungraded_submission($userid) {
$ungraded = $this->get_ungraded_submissions();
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return in_array($userid, $ungraded);
}
}