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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/>.
/**
* Form for selective purging of caches.
*
* @package core
* @copyright 2018 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_admin\form;
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir.'/formslib.php');
/**
* Form for selecting which caches to purge on admin/purgecaches.php
*
* @package core
* @copyright 2018 The Open University
* @author Mark Johnson <mark.johnson@open.ac.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class purge_caches extends \moodleform {
/**
* Define a "Purge all caches" button, and a fieldset with checkboxes for selectively purging separate caches.
*/
public function definition() {
$mform = $this->_form;
$mform->addElement('hidden', 'returnurl', $this->_customdata['returnurl']);
$mform->setType('returnurl', PARAM_LOCALURL);
$mform->addElement('submit', 'all', get_string('purgecaches', 'admin'));
$mform->addElement('header', 'purgecacheheader', get_string('purgeselectedcaches', 'admin'));
$checkboxes = [
$mform->createElement('advcheckbox', 'theme', '', get_string('purgethemecache', 'admin')),
$mform->createElement('advcheckbox', 'lang', '', get_string('purgelangcache', 'admin')),
$mform->createElement('advcheckbox', 'js', '', get_string('purgejscache', 'admin')),
$mform->createElement('advcheckbox', 'template', '', get_string('purgetemplates', 'admin')),
$mform->createElement('advcheckbox', 'filter', '', get_string('purgefiltercache', 'admin')),
$mform->createElement('advcheckbox', 'muc', '', get_string('purgemuc', 'admin')),
$mform->createElement('advcheckbox', 'other', '', get_string('purgeothercaches', 'admin'))
];
$mform->addGroup($checkboxes, 'purgeselectedoptions');
$mform->addElement('submit', 'purgeselectedcaches', get_string('purgeselectedcaches', 'admin'));
}
/**
* If the "Purge selected caches" button was pressed, ensure at least one cache was selected.
*
* @param array $data
* @param array $files
* @return array Error messages
*/
public function validation($data, $files) {
$errors = [];
if (isset($data['purgeselectedcaches']) && empty(array_filter($data['purgeselectedoptions']))) {
$errors['purgeselectedoptions'] = get_string('purgecachesnoneselected', 'admin');
}
return $errors;
}
}