first commit

mod/resource/backup/moodle1/lib.php

@@ -0,0 +1,306 @@
+<?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/>.
+
+/**
+ * Provides support for the conversion of moodle1 backup to the moodle2 format
+ *
+ * @package    mod_resource
+ * @copyright  2011 Andrew Davis <andrew@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Resource conversion handler
+ */
+class moodle1_mod_resource_handler extends moodle1_mod_handler {
+
+    /** @var moodle1_file_manager instance */
+    protected $fileman = null;
+
+    /** @var array of resource successors handlers */
+    private $successors = array();
+
+    /**
+     * Declare the paths in moodle.xml we are able to convert
+     *
+     * The method returns list of {@link convert_path} instances.
+     * For each path returned, the corresponding conversion method must be
+     * defined.
+     *
+     * Note that the paths /MOODLE_BACKUP/COURSE/MODULES/MOD/RESOURCE do not
+     * actually exist in the file. The last element with the module name was
+     * appended by the moodle1_converter class.
+     *
+     * @return array of {@link convert_path} instances
+     */
+    public function get_paths() {
+        return array(
+            new convert_path(
+                'resource', '/MOODLE_BACKUP/COURSE/MODULES/MOD/RESOURCE',
+                array(
+                    'renamefields' => array(
+                        'summary' => 'intro',
+                    ),
+                    'newfields' => array(
+                        'introformat' => 0,
+                    ),
+                    'dropfields' => array(
+                        'modtype',
+                    ),
+                )
+            )
+        );
+    }
+
+    /**
+     * Converts /MOODLE_BACKUP/COURSE/MODULES/MOD/RESOURCE data
+     *
+     * This methods detects the resource type and eventually re-dispatches it to the
+     * corresponding resource successor (url, forum, page, imscp).
+     */
+    public function process_resource(array $data, array $raw) {
+        global $CFG;
+        require_once("$CFG->libdir/resourcelib.php");
+
+        // replay the upgrade step 2009042001
+        if ($CFG->texteditors !== 'textarea') {
+            $data['intro']       = text_to_html($data['intro'], false, false, true);
+            $data['introformat'] = FORMAT_HTML;
+        }
+
+        // fix invalid null popup and options data
+        if (!array_key_exists('popup', $data) or is_null($data['popup'])) {
+            $data['popup'] = '';
+        }
+        if (!array_key_exists ('options', $data) or is_null($data['options'])) {
+            $data['options'] = '';
+        }
+
+        // decide if the legacy resource should be handled by a successor module
+        if ($successor = $this->get_successor($data['type'], $data['reference'])) {
+            // the instance id will be kept
+            $instanceid = $data['id'];
+
+            // move the instance from the resource's modinfo stash to the successor's
+            // modinfo stash
+            $resourcemodinfo  = $this->converter->get_stash('modinfo_resource');
+            $successormodinfo = $this->converter->get_stash('modinfo_'.$successor->get_modname());
+            $successormodinfo['instances'][$instanceid] = $resourcemodinfo['instances'][$instanceid];
+            unset($resourcemodinfo['instances'][$instanceid]);
+            $this->converter->set_stash('modinfo_resource', $resourcemodinfo);
+            $this->converter->set_stash('modinfo_'.$successor->get_modname(), $successormodinfo);
+
+            // get the course module information for the legacy resource module
+            $cminfo = $this->get_cminfo($instanceid);
+
+            // use the version of the successor instead of the current mod/resource
+            // beware - the version.php declares info via $module object, do not use
+            // a variable of such name here
+            $plugin = new stdClass();
+            $plugin->version = null;
+            $module = $plugin;
+            include $CFG->dirroot.'/mod/'.$successor->get_modname().'/version.php';
+            $cminfo['version'] = $plugin->version;
+
+            // stash the new course module information for this successor
+            $cminfo['modulename'] = $successor->get_modname();
+            $this->converter->set_stash('cminfo_'.$cminfo['modulename'], $cminfo, $instanceid);
+
+            // rewrite the coursecontents stash
+            $coursecontents = $this->converter->get_stash('coursecontents');
+            $coursecontents[$cminfo['id']]['modulename'] = $successor->get_modname();
+            $this->converter->set_stash('coursecontents', $coursecontents);
+
+            // delegate the processing to the successor handler
+            return $successor->process_legacy_resource($data, $raw);
+        }
+
+        // no successor is interested in this record, convert it to the new mod_resource (aka File module)
+
+        $resource = array();
+        $resource['id']              = $data['id'];
+        $resource['name']            = $data['name'];
+        $resource['intro']           = $data['intro'];
+        $resource['introformat']     = $data['introformat'];
+        $resource['tobemigrated']    = 0;
+        $resource['legacyfiles']     = RESOURCELIB_LEGACYFILES_ACTIVE;
+        $resource['legacyfileslast'] = null;
+        $resource['filterfiles']     = 0;
+        $resource['revision']        = 1;
+        $resource['timemodified']    = $data['timemodified'];
+
+        // populate display and displayoptions fields
+        $options = array('printintro' => 1);
+        if ($data['options'] == 'frame') {
+            $resource['display'] = RESOURCELIB_DISPLAY_FRAME;
+
+        } else if ($data['options'] == 'objectframe') {
+            $resource['display'] = RESOURCELIB_DISPLAY_EMBED;
+
+        } else if ($data['options'] == 'forcedownload') {
+            $resource['display'] = RESOURCELIB_DISPLAY_DOWNLOAD;
+
+        } else if ($data['popup']) {
+            $resource['display'] = RESOURCELIB_DISPLAY_POPUP;
+            $rawoptions = explode(',', $data['popup']);
+            foreach ($rawoptions as $rawoption) {
+                list($name, $value) = explode('=', trim($rawoption), 2);
+                if ($value > 0 and ($name == 'width' or $name == 'height')) {
+                    $options['popup'.$name] = $value;
+                    continue;
+                }
+            }
+
+        } else {
+            $resource['display'] = RESOURCELIB_DISPLAY_AUTO;
+        }
+        $resource['displayoptions'] = serialize($options);
+
+        // get the course module id and context id
+        $instanceid     = $resource['id'];
+        $currentcminfo  = $this->get_cminfo($instanceid);
+        $moduleid       = $currentcminfo['id'];
+        $contextid      = $this->converter->get_contextid(CONTEXT_MODULE, $moduleid);
+
+        // get a fresh new file manager for this instance
+        $this->fileman = $this->converter->get_file_manager($contextid, 'mod_resource');
+
+        // convert course files embedded into the intro
+        $this->fileman->filearea = 'intro';
+        $this->fileman->itemid   = 0;
+        $resource['intro'] = moodle1_converter::migrate_referenced_files($resource['intro'], $this->fileman);
+
+        // convert the referenced file itself as a main file in the content area
+        $reference = $data['reference'];
+        if (strpos($reference, '$@FILEPHP@$') === 0) {
+            $reference = str_replace(array('$@FILEPHP@$', '$@SLASH@$', '$@FORCEDOWNLOAD@$'), array('', '/', ''), $reference);
+        }
+        $this->fileman->filearea = 'content';
+        $this->fileman->itemid   = 0;
+
+        // Rebuild the file path.
+        $curfilepath = '/';
+        if ($reference) {
+            $curfilepath = pathinfo('/'.$reference, PATHINFO_DIRNAME);
+            if ($curfilepath != '/') {
+                $curfilepath .= '/';
+            }
+        }
+        try {
+            $this->fileman->migrate_file('course_files/'.$reference, $curfilepath, null, 1);
+        } catch (moodle1_convert_exception $e) {
+            // the file probably does not exist
+            $this->log('error migrating the resource main file', backup::LOG_WARNING, 'course_files/'.$reference);
+        }
+
+        // write resource.xml
+        $this->open_xml_writer("activities/resource_{$moduleid}/resource.xml");
+        $this->xmlwriter->begin_tag('activity', array('id' => $instanceid, 'moduleid' => $moduleid,
+            'modulename' => 'resource', 'contextid' => $contextid));
+        $this->write_xml('resource', $resource, array('/resource/id'));
+        $this->xmlwriter->end_tag('activity');
+        $this->close_xml_writer();
+
+        // write inforef.xml
+        $this->open_xml_writer("activities/resource_{$currentcminfo['id']}/inforef.xml");
+        $this->xmlwriter->begin_tag('inforef');
+        $this->xmlwriter->begin_tag('fileref');
+        foreach ($this->fileman->get_fileids() as $fileid) {
+            $this->write_xml('file', array('id' => $fileid));
+        }
+        $this->xmlwriter->end_tag('fileref');
+        $this->xmlwriter->end_tag('inforef');
+        $this->close_xml_writer();
+    }
+
+    /**
+     * Give succesors a chance to finish their job
+     */
+    public function on_resource_end(array $data) {
+        if ($successor = $this->get_successor($data['type'], $data['reference'])) {
+            $successor->on_legacy_resource_end($data);
+        }
+    }
+
+    /// internal implementation details follow /////////////////////////////////
+
+    /**
+     * Returns the handler of the new 2.0 mod type according the given type of the legacy 1.9 resource
+     *
+     * @param string $type the value of the 'type' field in 1.9 resource
+     * @param string $reference a file path. Necessary to differentiate files from web URLs
+     * @throws moodle1_convert_exception for the unknown types
+     * @return null|moodle1_mod_handler the instance of the handler, or null if the type does not have a successor
+     */
+    protected function get_successor($type, $reference) {
+
+        switch ($type) {
+            case 'text':
+            case 'html':
+                $name = 'page';
+                break;
+            case 'directory':
+                $name = 'folder';
+                break;
+            case 'ims':
+                $name = 'imscp';
+                break;
+            case 'file':
+                // if starts with $@FILEPHP@$ then it is URL link to a local course file
+                // to be migrated to the new resource module
+                if (strpos($reference, '$@FILEPHP@$') === 0) {
+                    $name = null;
+                    break;
+                }
+                // if http:// https:// ftp:// OR starts with slash need to be converted to URL
+                if (strpos($reference, '://') or strpos($reference, '/') === 0) {
+                    $name = 'url';
+                } else {
+                    $name = null;
+                }
+                break;
+            default:
+                throw new moodle1_convert_exception('unknown_resource_successor', $type);
+        }
+
+        if (is_null($name)) {
+            return null;
+        }
+
+        if (!isset($this->successors[$name])) {
+            $this->log('preparing resource successor handler', backup::LOG_DEBUG, $name);
+            $class = 'moodle1_mod_'.$name.'_handler';
+            $this->successors[$name] = new $class($this->converter, 'mod', $name);
+
+            // add the successor into the modlist stash
+            $modnames = $this->converter->get_stash('modnameslist');
+            $modnames[] = $name;
+            $modnames = array_unique($modnames); // should not be needed but just in case
+            $this->converter->set_stash('modnameslist', $modnames);
+
+            // add the successor's modinfo stash
+            $modinfo = $this->converter->get_stash('modinfo_resource');
+            $modinfo['name'] = $name;
+            $modinfo['instances'] = array();
+            $this->converter->set_stash('modinfo_'.$name, $modinfo);
+        }
+
+        return $this->successors[$name];
+     }
+}

mod/resource/backup/moodle2/backup_resource_activity_task.class.php

@@ -0,0 +1,127 @@
+<?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/>.
+
+/**
+ * Defines backup_resource_activity_task class
+ *
+ * @package     mod_resource
+ * @category    backup
+ * @copyright   2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
+ * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+require_once($CFG->dirroot . '/mod/resource/backup/moodle2/backup_resource_stepslib.php');
+
+/**
+ * Provides the steps to perform one complete backup of the Resource instance
+ */
+class backup_resource_activity_task extends backup_activity_task {
+
+    /**
+     * @param bool $resourceoldexists True if there are records in the resource_old table.
+     */
+    protected static $resourceoldexists = null;
+
+    /**
+     * No specific settings for this activity
+     */
+    protected function define_my_settings() {
+    }
+
+    /**
+     * Defines a backup step to store the instance data in the resource.xml file
+     */
+    protected function define_my_steps() {
+        $this->add_step(new backup_resource_activity_structure_step('resource_structure', 'resource.xml'));
+    }
+
+    /**
+     * Encodes URLs to the index.php and view.php scripts
+     *
+     * @param string $content some HTML text that eventually contains URLs to the activity instance scripts
+     * @return string the content with the URLs encoded
+     */
+    public static function encode_content_links($content) {
+        global $CFG, $DB;
+
+        $base = preg_quote($CFG->wwwroot,"/");
+
+        // Link to the list of resources.
+        $search="/(".$base."\/mod\/resource\/index.php\?id\=)([0-9]+)/";
+        $content= preg_replace($search, '$@RESOURCEINDEX*$2@$', $content);
+
+        // Link to resource view by moduleid.
+        $search = "/(".$base."\/mod\/resource\/view.php\?id\=)([0-9]+)/";
+        // Link to resource view by recordid
+        $search2 = "/(".$base."\/mod\/resource\/view.php\?r\=)([0-9]+)/";
+
+        // Check whether there are contents in the resource old table.
+        if (static::$resourceoldexists === null) {
+            static::$resourceoldexists = $DB->record_exists('resource_old', array());
+        }
+
+        // If there are links to items in the resource_old table, rewrite them to be links to the correct URL
+        // for their new module.
+        if (static::$resourceoldexists) {
+            // Match all of the resources.
+            $result = preg_match_all($search, $content, $matches, PREG_PATTERN_ORDER);
+
+            // Course module ID resource links.
+            if ($result) {
+                list($insql, $params) = $DB->get_in_or_equal($matches[2]);
+                $oldrecs = $DB->get_records_select('resource_old', "cmid $insql", $params, '', 'cmid, newmodule');
+
+                for ($i = 0; $i < count($matches[0]); $i++) {
+                    $cmid = $matches[2][$i];
+                    if (isset($oldrecs[$cmid])) {
+                        // Resource_old item, rewrite it
+                        $replace = '$@' . strtoupper($oldrecs[$cmid]->newmodule) . 'VIEWBYID*' . $cmid . '@$';
+                    } else {
+                        // Not in the resource old table, don't rewrite
+                        $replace = '$@RESOURCEVIEWBYID*'.$cmid.'@$';
+                    }
+                    $content = str_replace($matches[0][$i], $replace, $content);
+                }
+            }
+
+            $matches = null;
+            $result = preg_match_all($search2, $content, $matches, PREG_PATTERN_ORDER);
+
+            // No resource links.
+            if (!$result) {
+                return $content;
+            }
+            // Resource ID links.
+            list($insql, $params) = $DB->get_in_or_equal($matches[2]);
+            $oldrecs = $DB->get_records_select('resource_old', "oldid $insql", $params, '', 'oldid, cmid, newmodule');
+
+            for ($i = 0; $i < count($matches[0]); $i++) {
+                $recordid = $matches[2][$i];
+                if (isset($oldrecs[$recordid])) {
+                    // Resource_old item, rewrite it
+                    $replace = '$@' . strtoupper($oldrecs[$recordid]->newmodule) . 'VIEWBYID*' . $oldrecs[$recordid]->cmid . '@$';
+                    $content = str_replace($matches[0][$i], $replace, $content);
+                }
+            }
+        } else {
+            $content = preg_replace($search, '$@RESOURCEVIEWBYID*$2@$', $content);
+        }
+        return $content;
+    }
+}

mod/resource/backup/moodle2/backup_resource_stepslib.php

@@ -0,0 +1,60 @@
+<?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/>.
+
+/**
+ * Define all the backup steps that will be used by the backup_resource_activity_task
+ *
+ * @package    mod_resource
+ * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+/**
+ * Define the complete resource structure for backup, with file and id annotations
+ */
+class backup_resource_activity_structure_step extends backup_activity_structure_step {
+
+    protected function define_structure() {
+
+        // To know if we are including userinfo
+        $userinfo = $this->get_setting_value('userinfo');
+
+        // Define each element separated
+        $resource = new backup_nested_element('resource', array('id'), array(
+            'name', 'intro', 'introformat', 'tobemigrated',
+            'legacyfiles', 'legacyfileslast', 'display',
+            'displayoptions', 'filterfiles', 'revision', 'timemodified'));
+
+        // Build the tree
+        // (love this)
+
+        // Define sources
+        $resource->set_source_table('resource', array('id' => backup::VAR_ACTIVITYID));
+
+        // Define id annotations
+        // (none)
+
+        // Define file annotations
+        $resource->annotate_files('mod_resource', 'intro', null); // This file areas haven't itemid
+        $resource->annotate_files('mod_resource', 'content', null); // This file areas haven't itemid
+
+        // Return the root element (resource), wrapped into standard activity structure
+        return $this->prepare_activity_structure($resource);
+    }
+}

mod/resource/backup/moodle2/restore_resource_activity_task.class.php

@@ -0,0 +1,109 @@
+<?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/>.
+
+/**
+ * @package    mod_resource
+ * @subpackage backup-moodle2
+ * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+require_once($CFG->dirroot . '/mod/resource/backup/moodle2/restore_resource_stepslib.php'); // Because it exists (must)
+
+/**
+ * resource restore task that provides all the settings and steps to perform one
+ * complete restore of the activity
+ */
+class restore_resource_activity_task extends restore_activity_task {
+
+    /**
+     * Define (add) particular settings this activity can have
+     */
+    protected function define_my_settings() {
+        // No particular settings for this activity
+    }
+
+    /**
+     * Define (add) particular steps this activity can have
+     */
+    protected function define_my_steps() {
+        // Choice only has one structure step
+        $this->add_step(new restore_resource_activity_structure_step('resource_structure', 'resource.xml'));
+    }
+
+    /**
+     * Define the contents in the activity that must be
+     * processed by the link decoder
+     */
+    public static function define_decode_contents() {
+        $contents = array();
+
+        $contents[] = new restore_decode_content('resource', array('intro'), 'resource');
+
+        return $contents;
+    }
+
+    /**
+     * Define the decoding rules for links belonging
+     * to the activity to be executed by the link decoder
+     */
+    public static function define_decode_rules() {
+        $rules = array();
+
+        $rules[] = new restore_decode_rule('RESOURCEVIEWBYID', '/mod/resource/view.php?id=$1', 'course_module');
+        $rules[] = new restore_decode_rule('RESOURCEINDEX', '/mod/resource/index.php?id=$1', 'course');
+
+        return $rules;
+
+    }
+
+    /**
+     * Define the restore log rules that will be applied
+     * by the {@link restore_logs_processor} when restoring
+     * resource logs. It must return one array
+     * of {@link restore_log_rule} objects
+     */
+    public static function define_restore_log_rules() {
+        $rules = array();
+
+        $rules[] = new restore_log_rule('resource', 'add', 'view.php?id={course_module}', '{resource}');
+        $rules[] = new restore_log_rule('resource', 'update', 'view.php?id={course_module}', '{resource}');
+        $rules[] = new restore_log_rule('resource', 'view', 'view.php?id={course_module}', '{resource}');
+
+        return $rules;
+    }
+
+    /**
+     * Define the restore log rules that will be applied
+     * by the {@link restore_logs_processor} when restoring
+     * course logs. It must return one array
+     * of {@link restore_log_rule} objects
+     *
+     * Note this rules are applied when restoring course logs
+     * by the restore final task, but are defined here at
+     * activity level. All them are rules not linked to any module instance (cmid = 0)
+     */
+    public static function define_restore_log_rules_for_course() {
+        $rules = array();
+
+        $rules[] = new restore_log_rule('resource', 'view all', 'index.php?id={course}', null);
+
+        return $rules;
+    }
+}

mod/resource/backup/moodle2/restore_resource_stepslib.php

@@ -0,0 +1,64 @@
+<?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/>.
+
+/**
+ * @package    mod_resource
+ * @subpackage backup-moodle2
+ * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+/**
+ * Define all the restore steps that will be used by the restore_resource_activity_task
+ */
+
+/**
+ * Structure step to restore one resource activity
+ */
+class restore_resource_activity_structure_step extends restore_activity_structure_step {
+
+    protected function define_structure() {
+
+        $paths = array();
+        $paths[] = new restore_path_element('resource', '/activity/resource');
+
+        // Return the paths wrapped into standard activity structure
+        return $this->prepare_activity_structure($paths);
+    }
+
+    protected function process_resource($data) {
+        global $DB;
+
+        $data = (object)$data;
+        $oldid = $data->id;
+        $data->course = $this->get_courseid();
+
+        // Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.
+        // See MDL-9367.
+
+        // insert the resource record
+        $newitemid = $DB->insert_record('resource', $data);
+        // immediately after inserting "activity" record, call this
+        $this->apply_activity_instance($newitemid);
+    }
+
+    protected function after_execute() {
+        // Add choice related files, no need to match by itemname (just internally handled context)
+        $this->add_related_files('mod_resource', 'intro', null);
+        $this->add_related_files('mod_resource', 'content', null);
+    }
+}