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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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* Class for loading/storing context level data from the DB.
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*
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* @package tool_dataprivacy
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* @copyright 2018 David Monllao
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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 tool_dataprivacy;
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defined('MOODLE_INTERNAL') || die();
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/**
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* Class for loading/storing context level data from the DB.
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*
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* @copyright 2018 David Monllao
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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 contextlevel extends \core\persistent {
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/**
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* Database table.
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*/
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const TABLE = 'tool_dataprivacy_ctxlevel';
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/**
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* Return the definition of the properties of this model.
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*
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* @return array
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*/
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protected static function define_properties() {
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return array(
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'contextlevel' => array(
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'type' => PARAM_INT,
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'description' => 'The context level.',
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),
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'purposeid' => array(
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'type' => PARAM_INT,
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'description' => 'The purpose id.',
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),
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'categoryid' => array(
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'type' => PARAM_INT,
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'description' => 'The category id.',
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),
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);
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}
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/**
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* Returns an instance by contextlevel.
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*
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* @param mixed $contextlevel
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* @param mixed $exception
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* @return null
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*/
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public static function get_record_by_contextlevel($contextlevel, $exception = true) {
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global $DB;
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$cache = \cache::make('tool_dataprivacy', 'contextlevel');
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if ($data = $cache->get($contextlevel)) {
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return new static(0, $data);
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}
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if (!$record = $DB->get_record(self::TABLE, array('contextlevel' => $contextlevel))) {
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if (!$exception) {
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return false;
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} else {
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throw new \dml_missing_record_exception(self::TABLE);
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}
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}
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return new static(0, $record);
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}
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/**
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* Is the provided purpose used by any contextlevel?
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*
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* @param int $purposeid
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* @return bool
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*/
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public static function is_purpose_used($purposeid) {
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global $DB;
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return $DB->record_exists(self::TABLE, array('purposeid' => $purposeid));
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}
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/**
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* Is the provided category used by any contextlevel?
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*
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* @param int $categoryid
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* @return bool
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*/
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public static function is_category_used($categoryid) {
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global $DB;
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return $DB->record_exists(self::TABLE, array('categoryid' => $categoryid));
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}
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/**
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* Adds the new record to the cache.
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*
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* @return null
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*/
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protected function after_create() {
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$cache = \cache::make('tool_dataprivacy', 'contextlevel');
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$cache->set($this->get('contextlevel'), $this->to_record());
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}
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/**
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* Updates the cache record.
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*
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* @param bool $result
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* @return null
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*/
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protected function after_update($result) {
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$cache = \cache::make('tool_dataprivacy', 'contextlevel');
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$cache->set($this->get('contextlevel'), $this->to_record());
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}
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/**
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* Removes unnecessary stuff from db.
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*
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* @return null
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*/
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protected function before_delete() {
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$cache = \cache::make('tool_dataprivacy', 'contextlevel');
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$cache->delete($this->get('contextlevel'));
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}
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}
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