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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace core_question\local\bank;
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/**
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* Helper methods for question version options.
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*
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* @package core_question
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* @copyright 2024 onwards Catalyst IT {@link http://www.catalyst-eu.net/}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @author Conn Warwicker <conn.warwicker@catalyst-eu.net>
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*/
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class version_options {
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/**
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* Get the version options for display in dropdown menu
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* @param int $questionid
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* @return array
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* @throws \coding_exception
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*/
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public static function get_version_menu_options(int $questionid): array {
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$versions = self::get_version_options($questionid);
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$latestversion = reset($versions);
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$return = [];
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// Add the "always latest" option to the beginning.
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$return[0] = get_string('alwayslatest', 'question');
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foreach ($versions as $version) {
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if ($version->version === $latestversion->version) {
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$value = get_string('versioninfolatestshort', 'question', $version->version);
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} else {
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$value = get_string('question_versionshort', 'question', $version->version);
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}
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$return[$version->version] = $value;
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}
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return $return;
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}
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/**
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* Get the available versions of a question where one of the version has the given question id.
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*
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* @param int $questionid id of a question.
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* @return stdClass[] other versions of this question. Each object has fields versionid,
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* version and questionid. Array is returned most recent version first.
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*/
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public static function get_version_options(int $questionid): array {
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global $DB;
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return $DB->get_records_sql("
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SELECT allversions.id AS versionid,
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allversions.version,
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allversions.questionid
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FROM {question_versions} allversions
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WHERE allversions.questionbankentryid = (
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SELECT givenversion.questionbankentryid
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FROM {question_versions} givenversion
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WHERE givenversion.questionid = ?
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)
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AND allversions.status <> ?
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ORDER BY allversions.version DESC
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", [$questionid, question_version_status::QUESTION_STATUS_DRAFT]);
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}
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}
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