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See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
  • Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
  • PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
<?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/>.

/**
 * True-false question renderer class.
 *
 * @package    qtype
 * @subpackage truefalse
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


defined('MOODLE_INTERNAL') || die();


/**
 * Generates the output for true-false questions.
 *
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class qtype_truefalse_renderer extends qtype_renderer {
    public function formulation_and_controls(question_attempt $qa,
            question_display_options $options) {

        $question = $qa->get_question();
        $response = $qa->get_last_qt_var('answer', '');

        $inputname = $qa->get_qt_field_name('answer');
        $trueattributes = array(
            'type' => 'radio',
            'name' => $inputname,
            'value' => 1,
            'id' => $inputname . 'true',
        );
        $falseattributes = array(
            'type' => 'radio',
            'name' => $inputname,
            'value' => 0,
            'id' => $inputname . 'false',
        );

        if ($options->readonly) {
            $trueattributes['disabled'] = 'disabled';
            $falseattributes['disabled'] = 'disabled';
        }

        // Work out which radio button to select (if any).
        $truechecked = false;
        $falsechecked = false;
        $responsearray = array();
        if ($response) {
            $trueattributes['checked'] = 'checked';
            $truechecked = true;
            $responsearray = array('answer' => 1);
        } else if ($response !== '') {
            $falseattributes['checked'] = 'checked';
            $falsechecked = true;
            $responsearray = array('answer' => 1);
        }

        // Work out visual feedback for answer correctness.
        $trueclass = '';
        $falseclass = '';
        $truefeedbackimg = '';
        $falsefeedbackimg = '';
        if ($options->correctness) {
            if ($truechecked) {
                $trueclass = ' ' . $this->feedback_class((int) $question->rightanswer);
                $truefeedbackimg = $this->feedback_image((int) $question->rightanswer);
            } else if ($falsechecked) {
                $falseclass = ' ' . $this->feedback_class((int) (!$question->rightanswer));
                $falsefeedbackimg = $this->feedback_image((int) (!$question->rightanswer));
            }
        }

        $radiotrue = html_writer::empty_tag('input', $trueattributes) .
                html_writer::tag('label', get_string('true', 'qtype_truefalse'),
                array('for' => $trueattributes['id'], 'class' => 'ml-1'));
        $radiofalse = html_writer::empty_tag('input', $falseattributes) .
                html_writer::tag('label', get_string('false', 'qtype_truefalse'),
                array('for' => $falseattributes['id'], 'class' => 'ml-1'));

        $result = '';
        $result .= html_writer::tag('div', $question->format_questiontext($qa),
                array('class' => 'qtext'));

        $result .= html_writer::start_tag('fieldset', array('class' => 'ablock'));
> if (!empty($question->showstandardinstruction)) { $questionnumber = $options->add_question_identifier_to_label(get_string('selectone', 'qtype_truefalse'), true, true); > $legendclass = '';
$result .= html_writer::tag('legend', $questionnumber,
> } else { array('class' => 'prompt h6 font-weight-normal')); > $legendclass = 'sr-only'; > $questionnumber = $options->add_question_identifier_to_label(get_string('answer'), true, true); $result .= html_writer::start_tag('div', array('class' => 'answer')); > }
< array('class' => 'prompt h6 font-weight-normal'));
> array('class' => 'prompt h6 font-weight-normal ' . $legendclass));
array('class' => 'r0' . $trueclass)); $result .= html_writer::tag('div', $radiofalse . ' ' . $falsefeedbackimg, array('class' => 'r1' . $falseclass)); $result .= html_writer::end_tag('div'); // Answer. $result .= html_writer::end_tag('fieldset'); // Ablock. if ($qa->get_state() == question_state::$invalid) { $result .= html_writer::nonempty_tag('div', $question->get_validation_error($responsearray), array('class' => 'validationerror')); } return $result; } public function specific_feedback(question_attempt $qa) { $question = $qa->get_question(); $response = $qa->get_last_qt_var('answer', ''); if ($response) { return $question->format_text($question->truefeedback, $question->truefeedbackformat, $qa, 'question', 'answerfeedback', $question->trueanswerid); } else if ($response !== '') { return $question->format_text($question->falsefeedback, $question->falsefeedbackformat, $qa, 'question', 'answerfeedback', $question->falseanswerid); } } public function correct_response(question_attempt $qa) { $question = $qa->get_question(); if ($question->rightanswer) { return get_string('correctanswertrue', 'qtype_truefalse'); } else { return get_string('correctanswerfalse', 'qtype_truefalse'); } } }