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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 core_question\bank;

/**
 * A column type for the name of the question creator.
 *
 * @copyright  2009 Tim Hunt
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

class creator_name_column extends column_base {
    public function get_name() {
        return 'creatorname';
    }

protected function get_title() {
        return get_string('createdby', 'question');
    }

protected function display_content($question, $rowclasses) {
        if (!empty($question->creatorfirstname) && !empty($question->creatorlastname)) {
            $u = new \stdClass();
            $u = username_load_fields_from_object($u, $question, 'creator');
            $date = userdate($question->timecreated, get_string('strftimedatetime', 'langconfig'));
            echo fullname($u) . '<br>' . \html_writer::tag('span', $date, array('class' => 'date'));
        }
    }

public function get_extra_joins() {
        return array('uc' => 'LEFT JOIN {user} uc ON uc.id = q.createdby');
    }

public function get_required_fields() {
        $allnames = get_all_user_name_fields();
        $requiredfields = array();
        foreach ($allnames as $allname) {
            $requiredfields[] = 'uc.' . $allname . ' AS creator' . $allname;
        }
        $requiredfields[] = 'q.timecreated';
        return $requiredfields;
    }

public function is_sortable() {
        return array(
            'firstname' => array('field' => 'uc.firstname', 'title' => get_string('firstname')),
            'lastname' => array('field' => 'uc.lastname', 'title' => get_string('lastname')),
            'timecreated' => array('field' => 'q.timecreated', 'title' => get_string('date'))
        );
    }
}