mirrored from git://git.moodle.org/moodle.git
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questiontype.php
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/
questiontype.php
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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/>.
/**
* Question type class for the matching question type.
*
* @package qtype_match
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir . '/questionlib.php');
require_once($CFG->dirroot . '/question/engine/lib.php');
/**
* The matching question type class.
*
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class qtype_match extends question_type {
public function get_question_options($question) {
global $DB;
parent::get_question_options($question);
$question->options = $DB->get_record('qtype_match_options',
array('questionid' => $question->id));
$question->options->subquestions = $DB->get_records('qtype_match_subquestions',
array('questionid' => $question->id), 'id ASC');
return true;
}
public function save_defaults_for_new_questions(stdClass $fromform): void {
parent::save_defaults_for_new_questions($fromform);
$this->set_default_value('shuffleanswers', $fromform->shuffleanswers);
}
public function save_question_options($question) {
global $DB;
$context = $question->context;
$result = new stdClass();
$oldsubquestions = $DB->get_records('qtype_match_subquestions',
array('questionid' => $question->id), 'id ASC');
// Insert all the new question & answer pairs.
foreach ($question->subquestions as $key => $questiontext) {
if ($questiontext['text'] == '' && trim($question->subanswers[$key]) == '') {
continue;
}
if ($questiontext['text'] != '' && trim($question->subanswers[$key]) == '') {
$result->notice = get_string('nomatchinganswer', 'qtype_match', $questiontext);
}
// Update an existing subquestion if possible.
$subquestion = array_shift($oldsubquestions);
if (!$subquestion) {
$subquestion = new stdClass();
$subquestion->questionid = $question->id;
$subquestion->questiontext = '';
$subquestion->answertext = '';
$subquestion->id = $DB->insert_record('qtype_match_subquestions', $subquestion);
}
$subquestion->questiontext = $this->import_or_save_files($questiontext,
$context, 'qtype_match', 'subquestion', $subquestion->id);
$subquestion->questiontextformat = $questiontext['format'];
$subquestion->answertext = trim($question->subanswers[$key]);
$DB->update_record('qtype_match_subquestions', $subquestion);
}
// Delete old subquestions records.
$fs = get_file_storage();
foreach ($oldsubquestions as $oldsub) {
$fs->delete_area_files($context->id, 'qtype_match', 'subquestion', $oldsub->id);
$DB->delete_records('qtype_match_subquestions', array('id' => $oldsub->id));
}
// Save the question options.
$options = $DB->get_record('qtype_match_options', array('questionid' => $question->id));
if (!$options) {
$options = new stdClass();
$options->questionid = $question->id;
$options->correctfeedback = '';
$options->partiallycorrectfeedback = '';
$options->incorrectfeedback = '';
$options->id = $DB->insert_record('qtype_match_options', $options);
}
$options->shuffleanswers = $question->shuffleanswers;
$options = $this->save_combined_feedback_helper($options, $question, $context, true);
$DB->update_record('qtype_match_options', $options);
$this->save_hints($question, true);
if (!empty($result->notice)) {
return $result;
}
return true;
}
protected function initialise_question_instance(question_definition $question, $questiondata) {
parent::initialise_question_instance($question, $questiondata);
$question->shufflestems = $questiondata->options->shuffleanswers;
$this->initialise_combined_feedback($question, $questiondata, true);
$question->stems = array();
$question->choices = array();
$question->right = array();
foreach ($questiondata->options->subquestions as $matchsub) {
$key = array_search($matchsub->answertext, $question->choices, true);
if ($key === false) {
$key = $matchsub->id;
$question->choices[$key] = $matchsub->answertext;
}
if ($matchsub->questiontext !== '') {
$question->stems[$matchsub->id] = $matchsub->questiontext;
$question->stemformat[$matchsub->id] = $matchsub->questiontextformat;
$question->right[$matchsub->id] = $key;
}
}
}
protected function make_hint($hint) {
return question_hint_with_parts::load_from_record($hint);
}
public function delete_question($questionid, $contextid) {
global $DB;
$DB->delete_records('qtype_match_options', array('questionid' => $questionid));
$DB->delete_records('qtype_match_subquestions', array('questionid' => $questionid));
parent::delete_question($questionid, $contextid);
}
public function get_random_guess_score($questiondata) {
$q = $this->make_question($questiondata);
return 1 / count($q->choices);
}
public function get_possible_responses($questiondata) {
$subqs = array();
$q = $this->make_question($questiondata);
foreach ($q->stems as $stemid => $stem) {
$responses = array();
foreach ($q->choices as $choiceid => $choice) {
$responses[$choiceid] = new question_possible_response(
$q->html_to_text($stem, $q->stemformat[$stemid]) . ': ' . $choice,
($choiceid == $q->right[$stemid]) / count($q->stems));
}
$responses[null] = question_possible_response::no_response();
$subqs[$stemid] = $responses;
}
return $subqs;
}
public function move_files($questionid, $oldcontextid, $newcontextid) {
global $DB;
$fs = get_file_storage();
parent::move_files($questionid, $oldcontextid, $newcontextid);
$subquestionids = $DB->get_records_menu('qtype_match_subquestions',
array('questionid' => $questionid), 'id', 'id,1');
foreach ($subquestionids as $subquestionid => $notused) {
$fs->move_area_files_to_new_context($oldcontextid,
$newcontextid, 'qtype_match', 'subquestion', $subquestionid);
}
$this->move_files_in_combined_feedback($questionid, $oldcontextid, $newcontextid);
$this->move_files_in_hints($questionid, $oldcontextid, $newcontextid);
}
protected function delete_files($questionid, $contextid) {
global $DB;
$fs = get_file_storage();
parent::delete_files($questionid, $contextid);
$subquestionids = $DB->get_records_menu('qtype_match_subquestions',
array('questionid' => $questionid), 'id', 'id,1');
foreach ($subquestionids as $subquestionid => $notused) {
$fs->delete_area_files($contextid, 'qtype_match', 'subquestion', $subquestionid);
}
$this->delete_files_in_combined_feedback($questionid, $contextid);
$this->delete_files_in_hints($questionid, $contextid);
}
}