xref: /webtrees/app/Census/CensusColumnBirthDaySlashMonth.php (revision b2ce94c6833c25934b40a7e6bc15985d50b5f42a)
1<?php
2/**
3 * webtrees: online genealogy
4 * Copyright (C) 2018 webtrees development team
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17namespace Fisharebest\Webtrees\Census;
18
19use Fisharebest\Webtrees\Individual;
20
21/**
22 * The individual's date of birth.
23 */
24class CensusColumnBirthDaySlashMonth extends AbstractCensusColumn implements CensusColumnInterface
25{
26    /**
27     * Generate the likely value of this census column, based on available information.
28     *
29     * @param Individual $individual
30     * @param Individual $head
31     *
32     * @return string
33     */
34    public function generate(Individual $individual, Individual $head): string
35    {
36        $birth_date = $individual->getBirthDate();
37
38        if ($birth_date->minimumJulianDay() === $birth_date->maximumJulianDay()) {
39            return $birth_date->minimumDate()->format('%j/%n');
40        }
41
42        return '';
43    }
44}
45