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<?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 mod_quiz\local\structure;> use context_module; /** >* Class slot_random, represents a random question slot type. * * @package mod_quiz * @copyright 2018 Shamim Rezaie <shamim@moodle.com> * @author 2021 Safat Shahin <safatshahin@catalyst-au.net> * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class slot_random { /** @var \stdClass Slot's properties. A record retrieved from the quiz_slots table. */ protected $record; /** * @var \stdClass set reference record */ protected $referencerecord; /** * @var \stdClass The quiz this question slot belongs to. */ protected $quiz = null; /** * @var \core_tag_tag[] List of tags for this slot. */ protected $tags = []; /** * @var string filter condition */ protected $filtercondition = null; /** * slot_random constructor. * * @param \stdClass $slotrecord Represents a record in the quiz_slots table. */ public function __construct($slotrecord = null) { $this->record = new \stdClass(); $this->referencerecord = new \stdClass(); $slotproperties = ['id', 'slot', 'quizid', 'page', 'requireprevious', 'maxmark']; $setreferenceproperties = ['usingcontextid', 'questionscontextid']; foreach ($slotproperties as $property) { if (isset($slotrecord->$property)) { $this->record->$property = $slotrecord->$property; } } foreach ($setreferenceproperties as $referenceproperty) { if (isset($slotrecord->$referenceproperty)) { $this->referencerecord->$referenceproperty = $slotrecord->$referenceproperty; } } } /** * Returns the quiz for this question slot. * The quiz is fetched the first time it is requested and then stored in a member variable to be returned each subsequent time. * * @return mixed * @throws \coding_exception */ public function get_quiz() { global $DB; if (empty($this->quiz)) { if (empty($this->record->quizid)) { throw new \coding_exception('quizid is not set.'); }< $this->quiz = $DB->get_record('quiz', array('id' => $this->record->quizid));> $this->quiz = $DB->get_record('quiz', ['id' => $this->record->quizid]);} return $this->quiz; } /** * Sets the quiz object for the quiz slot. * It is not mandatory to set the quiz as the quiz slot can fetch it the first time it is accessed, * however it helps with the performance to set the quiz if you already have it. * * @param \stdClass $quiz The qui object. */ public function set_quiz($quiz) { $this->quiz = $quiz; $this->record->quizid = $quiz->id; } /** * Set some tags for this quiz slot. * * @param \core_tag_tag[] $tags> * */ > * @deprecated since Moodle 4.3 public function set_tags($tags) { > * @todo Final deprecation on Moodle 4.7 MDL-78091$this->tags = [];> debugging('Method set_tags() is deprecated, ' . foreach ($tags as $tag) { > 'please do not use this function.', DEBUG_DEVELOPER);// We use $tag->id as the key for the array so not only it handles duplicates of the same tag being given, // but also it is consistent with the behaviour of set_tags_by_id() below. $this->tags[$tag->id] = $tag; } } /** * Set some tags for this quiz slot. This function uses tag ids to find tags. * * @param int[] $tagids> * @deprecated since Moodle 4.3 */ > * @todo Final deprecation on Moodle 4.7 MDL-78091public function set_tags_by_id($tagids) {> debugging( $this->tags = \core_tag_tag::get_bulk($tagids, 'id, name'); > 'Method set_tags_by_id() is deprecated, please do not use this function.', } > DEBUG_DEVELOPER > );/** * Set filter condition. *< * @param \stdClass $filters> * @param \string $filters*/< public function set_filter_condition($filters) { < if (!empty($this->tags)) { < $filters->tags = $this->tags; < } < < $this->filtercondition = json_encode($filters);> public function set_filter_condition(string $filters): void { > $this->filtercondition = $filters;} /** * Inserts the quiz slot at the $page page. * It is required to call this function if you are building a quiz slot object from scratch. * * @param int $page The page that this slot will be inserted at. */ public function insert($page) { global $DB;< $slots = $DB->get_records('quiz_slots', array('quizid' => $this->record->quizid),> $slots = $DB->get_records('quiz_slots', ['quizid' => $this->record->quizid],'slot', 'id, slot, page'); $quiz = $this->get_quiz(); $trans = $DB->start_delegated_transaction(); $maxpage = 1; $numonlastpage = 0; foreach ($slots as $slot) { if ($slot->page > $maxpage) { $maxpage = $slot->page; $numonlastpage = 1; } else { $numonlastpage += 1; } } if (is_int($page) && $page >= 1) { // Adding on a given page. $lastslotbefore = 0; foreach (array_reverse($slots) as $otherslot) { if ($otherslot->page > $page) {< $DB->set_field('quiz_slots', 'slot', $otherslot->slot + 1, array('id' => $otherslot->id));> $DB->set_field('quiz_slots', 'slot', $otherslot->slot + 1, ['id' => $otherslot->id]);} else { $lastslotbefore = $otherslot->slot; break; } } $this->record->slot = $lastslotbefore + 1; $this->record->page = min($page, $maxpage + 1); quiz_update_section_firstslots($this->record->quizid, 1, max($lastslotbefore, 1)); } else { $lastslot = end($slots); if ($lastslot) { $this->record->slot = $lastslot->slot + 1; } else { $this->record->slot = 1; } if ($quiz->questionsperpage && $numonlastpage >= $quiz->questionsperpage) { $this->record->page = $maxpage + 1; } else { $this->record->page = $maxpage; } } $this->record->id = $DB->insert_record('quiz_slots', $this->record); $this->referencerecord->component = 'mod_quiz'; $this->referencerecord->questionarea = 'slot'; $this->referencerecord->itemid = $this->record->id; $this->referencerecord->filtercondition = $this->filtercondition; $DB->insert_record('question_set_references', $this->referencerecord); $trans->allow_commit(); // Log slot created event. $cm = get_coursemodule_from_instance('quiz', $quiz->id); $event = \mod_quiz\event\slot_created::create([< 'context' => \context_module::instance($cm->id),> 'context' => context_module::instance($cm->id),'objectid' => $this->record->id, 'other' => [ 'quizid' => $quiz->id, 'slotnumber' => $this->record->slot, 'page' => $this->record->page ] ]); $event->trigger(); } }