See Release Notes
Long Term Support Release
<?php // This file is part of Moodle - http://moodle.org/ // // 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 <http://www.gnu.org/licenses/>. namespace qbank_usage; /** * Helper class for usage. * * @package qbank_usage * @copyright 2021 Catalyst IT Australia Pty Ltd * @author Safat Shahin <safatshahin@catalyst-au.net> * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class helper { /** * Get the usage count for a question. * * @param \question_definition $question * @return int */ public static function get_question_entry_usage_count($question) { global $DB; $sql = 'SELECT COUNT(*) FROM (' . self::question_usage_sql() . ') quizid'; return $DB->count_records_sql($sql, [$question->id, $question->questionbankentryid, 'mod_quiz', 'slot']); } /** * Get the sql for usage data. * * @return string */ public static function question_usage_sql(): string { $sqlset = "(". self::get_question_attempt_usage_sql() .")". "UNION". "(". self::get_question_bank_usage_sql() .")"; return $sqlset; } /** * Get question attempt count for the question. * * @param int $questionid * @param int $quizid * @return int */ public static function get_question_attempts_count_in_quiz(int $questionid, $quizid = null): int { global $DB; if ($quizid) { $sql = 'SELECT COUNT(qatt.id) FROM {quiz} qz JOIN {quiz_attempts} qa ON qa.quiz = qz.id JOIN {question_usages} qu ON qu.id = qa.uniqueid JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id JOIN {question} q ON q.id = qatt.questionid WHERE qatt.questionid = :questionid AND qa.preview = 0 AND qz.id = :quizid'; $param = ['questionid' => $questionid, 'quizid' => $quizid]; } else { $sql = 'SELECT COUNT(qatt.id) FROM {quiz_slots} qs JOIN {quiz_attempts} qa ON qa.quiz = qs.quizid JOIN {question_usages} qu ON qu.id = qa.uniqueid JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id JOIN {question} q ON q.id = qatt.questionid WHERE qatt.questionid = ? AND qa.preview = 0'; $param = ['questionid' => $questionid]; } return $DB->count_records_sql($sql, $param); } /** * Get the question bank usage sql. * * The resulting string which represents a sql query has then to be * called accompanying a $params array which includes the necessary * parameters in the correct order which are the question id, then * the component and finally the question area. * * @return string */ public static function get_question_bank_usage_sql(): string { $sql = "SELECT qz.id as quizid, qz.name as modulename, qz.course as courseid FROM {quiz_slots} slot JOIN {quiz} qz ON qz.id = slot.quizid JOIN {question_references} qr ON qr.itemid = slot.id JOIN {question_bank_entries} qbe ON qbe.id = qr.questionbankentryid JOIN {question_versions} qv ON qv.questionbankentryid = qbe.id WHERE qv.questionbankentryid = ? AND qr.component = ? AND qr.questionarea = ?"; return $sql; } /** * Get the question attempt usage sql. * * The resulting string which represents a sql query has then to be * called accompanying a $params array which includes the necessary * parameter, the question id. * * @return string */ public static function get_question_attempt_usage_sql(): string { $sql = "SELECT qz.id as quizid, qz.name as modulename, qz.course as courseid FROM {quiz} qz JOIN {quiz_attempts} qa ON qa.quiz = qz.id JOIN {question_usages} qu ON qu.id = qa.uniqueid JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id JOIN {question} q ON q.id = qatt.questionid WHERE qa.preview = 0 AND q.id = ?"; return $sql; }> } > /** > * Get the question last used sql. > * > * @return string > */ > public static function get_question_last_used_sql(): string { > $sql = "SELECT MAX(qa.timemodified) as lastused > FROM {quiz} qz > JOIN {quiz_attempts} qa ON qa.quiz = qz.id > JOIN {question_usages} qu ON qu.id = qa.uniqueid > JOIN {question_attempts} qatt ON qatt.questionusageid = qu.id > JOIN {question} q ON q.id = qatt.questionid > WHERE qa.preview = 0 > AND q.id = ?"; > return $sql; > } >