mirror of
https://github.com/moodle/moodle.git
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200 lines
7.6 KiB
PHP
200 lines
7.6 KiB
PHP
<?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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* Privacy Subsystem implementation for tool_cohortroles.
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*
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* @package tool_cohortroles
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* @copyright 2018 Zig Tan <zig@moodle.com>
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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_cohortroles\privacy;
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use core_privacy\local\metadata\collection;
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use core_privacy\local\request\approved_contextlist;
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use core_privacy\local\request\context;
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use core_privacy\local\request\contextlist;
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use core_privacy\local\request\transform;
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use core_privacy\local\request\writer;
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defined('MOODLE_INTERNAL') || die();
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/**
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* Privacy Subsystem for tool_cohortroles implementing metadata and plugin providers.
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*
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* @copyright 2018 Zig Tan <zig@moodle.com>
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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 provider implements \core_privacy\local\metadata\provider, \core_privacy\local\request\plugin\provider {
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/**
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* Returns meta data about this system.
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*
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* @param collection $collection The initialised collection to add items to.
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* @return collection A listing of user data stored through this system.
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*/
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public static function get_metadata(collection $collection) : collection {
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// The tool_cohortroles plugin utilises the mdl_tool_cohortroles table.
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$collection->add_database_table(
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'tool_cohortroles',
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[
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'id' => 'privacy:metadata:tool_cohortroles:id',
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'cohortid' => 'privacy:metadata:tool_cohortroles:cohortid',
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'roleid' => 'privacy:metadata:tool_cohortroles:roleid',
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'userid' => 'privacy:metadata:tool_cohortroles:userid',
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'timecreated' => 'privacy:metadata:tool_cohortroles:timecreated',
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'timemodified' => 'privacy:metadata:tool_cohortroles:timemodified',
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'usermodified' => 'privacy:metadata:tool_cohortroles:usermodified'
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],
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'privacy:metadata:tool_cohortroles'
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);
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return $collection;
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}
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/**
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* Get the list of contexts that contain user information for the specified user.
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*
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* @param int $userid The user to search.
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* @return contextlist $contextlist The contextlist containing the list of contexts used in this plugin.
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*/
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public static function get_contexts_for_userid(int $userid) : contextlist {
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$contextlist = new contextlist();
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// Retrieve the User context associated with tool_cohortroles records.
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$sql = "SELECT DISTINCT c.id
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FROM {context} c
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JOIN {tool_cohortroles} cr ON cr.userid = c.instanceid AND c.contextlevel = :contextuser
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WHERE cr.userid = :userid";
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$params = [
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'contextuser' => CONTEXT_USER,
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'userid' => $userid
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];
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$contextlist->add_from_sql($sql, $params);
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return $contextlist;
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}
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/**
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* Export all user data for the specified user, in the specified contexts.
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*
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* @param approved_contextlist $contextlist The approved contexts to export information for.
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*/
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public static function export_user_data(approved_contextlist $contextlist) {
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global $DB;
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// If the user has tool_cohortroles data, then only the User context should be present so get the first context.
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$contexts = $contextlist->get_contexts();
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if (count($contexts) == 0) {
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return;
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}
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$context = reset($contexts);
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// Sanity check that context is at the User context level, then get the userid.
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if ($context->contextlevel !== CONTEXT_USER) {
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return;
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}
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$userid = $context->instanceid;
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// Retrieve the tool_cohortroles records created for the user.
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$sql = 'SELECT cr.id as cohortroleid,
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c.name as cohortname,
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c.idnumber as cohortidnumber,
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c.description as cohortdescription,
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r.shortname as roleshortname,
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cr.userid as userid,
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cr.timecreated as timecreated,
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cr.timemodified as timemodified
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FROM {tool_cohortroles} cr
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JOIN {cohort} c ON c.id = cr.cohortid
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JOIN {role} r ON r.id = cr.roleid
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WHERE cr.userid = :userid';
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$params = [
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'userid' => $userid
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];
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$cohortroles = $DB->get_records_sql($sql, $params);
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foreach ($cohortroles as $cohortrole) {
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// The tool_cohortroles data export is organised in:
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// {User Context}/Cohort roles management/{cohort name}/{role shortname}/data.json.
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$subcontext = [
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get_string('pluginname', 'tool_cohortroles'),
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$cohortrole->cohortname,
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$cohortrole->roleshortname
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];
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$data = (object) [
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'cohortname' => $cohortrole->cohortname,
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'cohortidnumber' => $cohortrole->cohortidnumber,
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'cohortdescription' => $cohortrole->cohortdescription,
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'roleshortname' => $cohortrole->roleshortname,
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'userid' => transform::user($cohortrole->userid),
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'timecreated' => transform::datetime($cohortrole->timecreated),
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'timemodified' => transform::datetime($cohortrole->timemodified)
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];
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writer::with_context($context)->export_data($subcontext, $data);
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}
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}
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/**
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* Delete all data for all users in the specified context.
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*
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* @param context $context The specific context to delete data for.
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*/
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public static function delete_data_for_all_users_in_context(\context $context) {
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global $DB;
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// Sanity check that context is at the User context level, then get the userid.
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if ($context->contextlevel !== CONTEXT_USER) {
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return;
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}
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$userid = $context->instanceid;
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// Delete the tool_cohortroles records created for the userid.
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$DB->delete_records('tool_cohortroles', ['userid' => $userid]);
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}
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/**
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* Delete all user data for the specified user, in the specified contexts.
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*
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* @param approved_contextlist $contextlist The approved contexts and user information to delete information for.
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*/
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public static function delete_data_for_user(approved_contextlist $contextlist) {
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global $DB;
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// If the user has tool_cohortroles data, then only the User context should be present so get the first context.
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$contexts = $contextlist->get_contexts();
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if (count($contexts) == 0) {
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return;
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}
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$context = reset($contexts);
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// Sanity check that context is at the User context level, then get the userid.
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if ($context->contextlevel !== CONTEXT_USER) {
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return;
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}
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$userid = $context->instanceid;
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// Delete the tool_cohortroles records created for the userid.
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$DB->delete_records('tool_cohortroles', ['userid' => $userid]);
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}
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}
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