compatlib.php

<?php
// This file is part of the learningtimecheck plugin for 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/>.

/**
 * Cross version compatibility functions.
 * @package block_use_stats
 * @author Valery Fremaux <valery.fremaux@gmail.com>
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 */
namespace block_use_stats;

/**
 * Groups the multiversion compatibility changes.
 */
class compat {

    /**
     * User fields
     * @param $prefix table prefix if needed.
     */
    public static function get_user_fields($prefix = 'u') {

        global $CFG;

        if (!empty($prefix)) {
            $prefix = $prefix.'.';
        }

        if ($CFG->branch < 400) {
            return $prefix.'id,'.get_all_user_name_fields(true, $prefix);
        } else {
            $fields = $prefix.'id';
            $morefields = \core_user\fields::for_name()->with_userpic()->excluding('id')->get_required_fields();
            foreach ($morefields as &$f) {
                $f = $prefix.$f;
            }
            $fields .= ','.implode(',', $morefields);
            return $fields;
        }
    }
}