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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Form for selective purging of caches.
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*
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* @package core
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* @copyright 2018 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace core_admin\form;
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->libdir.'/formslib.php');
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/**
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* Form for selecting which caches to purge on admin/purgecaches.php
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*
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* @package core
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* @copyright 2018 The Open University
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* @author Mark Johnson <mark.johnson@open.ac.uk>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class purge_caches extends \moodleform {
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/**
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* Define a "Purge all caches" button, and a fieldset with checkboxes for selectively purging separate caches.
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*/
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public function definition() {
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$mform = $this->_form;
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$mform->addElement('hidden', 'returnurl', $this->_customdata['returnurl']);
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$mform->setType('returnurl', PARAM_LOCALURL);
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$mform->addElement('submit', 'all', get_string('purgecaches', 'admin'));
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$mform->addElement('header', 'purgecacheheader', get_string('purgeselectedcaches', 'admin'));
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$checkboxes = [
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$mform->createElement('advcheckbox', 'theme', '', get_string('purgethemecache', 'admin')),
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$mform->createElement('advcheckbox', 'lang', '', get_string('purgelangcache', 'admin')),
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$mform->createElement('advcheckbox', 'js', '', get_string('purgejscache', 'admin')),
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$mform->createElement('advcheckbox', 'template', '', get_string('purgetemplates', 'admin')),
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$mform->createElement('advcheckbox', 'filter', '', get_string('purgefiltercache', 'admin')),
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$mform->createElement('advcheckbox', 'muc', '', get_string('purgemuc', 'admin')),
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$mform->createElement('advcheckbox', 'other', '', get_string('purgeothercaches', 'admin'))
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];
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$mform->addGroup($checkboxes, 'purgeselectedoptions');
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$mform->addElement('submit', 'purgeselectedcaches', get_string('purgeselectedcaches', 'admin'));
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}
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/**
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* If the "Purge selected caches" button was pressed, ensure at least one cache was selected.
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*
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* @param array $data
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* @param array $files
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* @return array Error messages
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*/
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public function validation($data, $files) {
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$errors = [];
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if (isset($data['purgeselectedcaches']) && empty(array_filter($data['purgeselectedoptions']))) {
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$errors['purgeselectedoptions'] = get_string('purgecachesnoneselected', 'admin');
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}
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return $errors;
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}
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}
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