settings.php

<?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/>.

/**
 * This file adds the settings pages to the navigation menu
 *
 * @package   mod_peerwork
 * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die;

if ($ADMIN->fulltree) {

    $steps = range(0, 100, 1);
    $zerotohundredpcopts = array_combine($steps, array_map(function($i) {
        return $i . '%';
    }, $steps));

    $settings->add(new admin_setting_configselect(
        'peerwork/addmorecriteriastep',
        get_string('addmorecriteriastep', 'mod_peerwork'),
        get_string('addmorecriteriastep_help', 'mod_peerwork'),
        3,
        array_combine(range(1, 9), range(1, 9))
    ));

    $settings->add(new admin_setting_heading(
        'peerwork/defaultsettingshdr',
        get_string('defaultsettings', 'mod_peerwork'),
        get_string('defaultsettings_desc', 'mod_peerwork')
    ));

    $settings->add(new admin_setting_configcheckbox(
        'peerwork/allowlatesubmissions',
        get_string('allowlatesubmissions', 'mod_peerwork'),
        get_string('allowlatesubmissions_help', 'mod_peerwork'),
        0
    ));

    $settings->add(new admin_setting_configselect(
        'peerwork/maxfiles',
        get_string('setup.maxfiles', 'mod_peerwork'),
        get_string('setup.maxfiles_help', 'mod_peerwork'),
        1,
        [0 => 0, 1, 2, 3, 4, 5]
    ));

    $settings->add(new admin_setting_configcheckbox(
        'peerwork/selfgrading',
        get_string('selfgrading', 'mod_peerwork'),
        get_string('selfgrading_help', 'mod_peerwork'),
        0
    ));

    $settings->add(new admin_setting_configselect(
        'peerwork/paweighting',
        get_string('paweighting', 'mod_peerwork'),
        get_string('paweighting_help', 'mod_peerwork'),
        50,
        $zerotohundredpcopts
    ));

    $settings->add(new admin_setting_configselect(
        'peerwork/noncompletionpenalty',
        get_string('noncompletionpenalty', 'mod_peerwork'),
        get_string('noncompletionpenalty_help', 'mod_peerwork'),
        0,
        $zerotohundredpcopts
    ));

    $settings->add(new admin_setting_configcheckbox(
        'peerwork/displaypeergradestotals',
        get_string('displaypeergradestotals', 'mod_peerwork'),
        get_string('displaypeergradestotals_help', 'mod_peerwork'),
        false
    ));

    $settings->add(new admin_setting_configtext(
        'peerwork/justificationmaxlength',
        get_string('justificationmaxlength', 'mod_peerwork'),
        get_string('justificationmaxlength_help', 'mod_peerwork'),
        280,
        PARAM_INT
    ));

}