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moodle/mod/forum/db/upgrade.php

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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/>.
/**
* This file keeps track of upgrades to
* the forum module
*
* Sometimes, changes between versions involve
* alterations to database structures and other
* major things that may break installations.
*
* The upgrade function in this file will attempt
* to perform all the necessary actions to upgrade
* your older installtion to the current version.
*
* If there's something it cannot do itself, it
* will tell you what you need to do.
*
* The commands in here will all be database-neutral,
* using the methods of database_manager class
*
* Please do not forget to use upgrade_set_timeout()
* before any action that may take longer time to finish.
*
* @package mod-forum
* @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
function xmldb_forum_upgrade($oldversion) {
global $CFG, $DB, $OUTPUT;
$dbman = $DB->get_manager(); // loads ddl manager and xmldb classes
$result = true;
//===== 1.9.0 upgrade line ======//
if ($result && $oldversion < 2007101511) {
//MDL-13866 - send forum ratins to gradebook again
require_once($CFG->dirroot.'/mod/forum/lib.php');
forum_upgrade_grades();
upgrade_mod_savepoint($result, 2007101511, 'forum');
}
if ($result && $oldversion < 2007101512) {
/// Cleanup the forum subscriptions
echo $OUTPUT->notification('Removing stale forum subscriptions', 'notifysuccess');
$roles = get_roles_with_capability('moodle/course:participate', CAP_ALLOW);
$roles = array_keys($roles);
list($usql, $params) = $DB->get_in_or_equal($roles);
$sql = "SELECT fs.userid, f.id AS forumid
FROM {forum} f
JOIN {course} c ON c.id = f.course
JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = ".CONTEXT_COURSE.")
JOIN {forum_subscriptions} fs ON fs.forum = f.id
LEFT JOIN {role_assignments} ra ON (ra.contextid = ctx.id AND ra.userid = fs.userid AND ra.roleid $usql)
WHERE ra.id IS NULL";
if ($rs = $DB->get_recordset_sql($sql, $params)) {
foreach ($rs as $remove) {
$DB->delete_records('forum_subscriptions', array('userid'=>$remove->userid, 'forum'=>$remove->forumid));
echo '.';
}
$rs->close();
}
upgrade_mod_savepoint($result, 2007101512, 'forum');
}
if ($result && $oldversion < 2008072800) {
/// Define field completiondiscussions to be added to forum
$table = new xmldb_table('forum');
$field = new xmldb_field('completiondiscussions');
$field->set_attributes(XMLDB_TYPE_INTEGER, '9', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'blockperiod');
/// Launch add field completiondiscussions
if(!$dbman->field_exists($table,$field)) {
$dbman->add_field($table, $field);
}
$field = new xmldb_field('completionreplies');
$field->set_attributes(XMLDB_TYPE_INTEGER, '9', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completiondiscussions');
/// Launch add field completionreplies
if(!$dbman->field_exists($table,$field)) {
$dbman->add_field($table, $field);
}
/// Define field completionposts to be added to forum
$field = new xmldb_field('completionposts');
$field->set_attributes(XMLDB_TYPE_INTEGER, '9', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completionreplies');
/// Launch add field completionposts
if(!$dbman->field_exists($table,$field)) {
$dbman->add_field($table, $field);
}
upgrade_mod_savepoint($result, 2008072800, 'forum');
}
if ($result && $oldversion < 2008081900) {
/////////////////////////////////////
/// new file storage upgrade code ///
/////////////////////////////////////
$fs = get_file_storage();
$empty = $DB->sql_empty(); // silly oracle empty string handling workaround
$sqlfrom = "FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
JOIN {modules} m ON m.name = 'forum'
JOIN {course_modules} cm ON (cm.module = m.id AND cm.instance = f.id)
WHERE p.attachment <> '$empty' AND p.attachment <> '1'";
$count = $DB->count_records_sql("SELECT COUNT('x') $sqlfrom");
if ($rs = $DB->get_recordset_sql("SELECT p.id, p.attachment, d.forum, f.course, cm.id AS cmid $sqlfrom ORDER BY f.course, f.id, d.id")) {
$pbar = new progress_bar('migrateforumfiles', 500, true);
$i = 0;
foreach ($rs as $post) {
$i++;
upgrade_set_timeout(60); // set up timeout, may also abort execution
$pbar->update($i, $count, "Migrating forum posts - $i/$count.");
$filepath = "$CFG->dataroot/$post->course/$CFG->moddata/forum/$post->forum/$post->id/$post->attachment";
if (!is_readable($filepath)) {
//file missing??
echo $OUTPUT->notification("File not readable, skipping: ".$filepath);
$post->attachment = '';
$DB->update_record('forum_posts', $post);
continue;
}
$context = get_context_instance(CONTEXT_MODULE, $post->cmid);
$filearea = 'forum_attachment';
$filename = clean_param($post->attachment, PARAM_FILE);
if ($filename === '') {
echo $OUTPUT->notification("Unsupported post filename, skipping: ".$filepath);
$post->attachment = '';
$DB->update_record('forum_posts', $post);
continue;
}
if (!$fs->file_exists($context->id, $filearea, $post->id, '/', $filename)) {
$file_record = array('contextid'=>$context->id, 'filearea'=>$filearea, 'itemid'=>$post->id, 'filepath'=>'/', 'filename'=>$filename, 'userid'=>$post->userid);
if ($fs->create_file_from_pathname($file_record, $filepath)) {
$post->attachment = '1';
if ($DB->update_record('forum_posts', $post)) {
unlink($filepath);
}
}
}
// remove dirs if empty
@rmdir("$CFG->dataroot/$post->course/$CFG->moddata/forum/$post->forum/$post->id");
@rmdir("$CFG->dataroot/$post->course/$CFG->moddata/forum/$post->forum");
@rmdir("$CFG->dataroot/$post->course/$CFG->moddata/forum");
}
$rs->close();
}
upgrade_mod_savepoint($result, 2008081900, 'forum');
}
if ($result && $oldversion < 2008090800) {
/// Define field maxattachments to be added to forum
$table = new xmldb_table('forum');
$field = new xmldb_field('maxattachments', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'maxbytes');
/// Conditionally launch add field maxattachments
if (!$dbman->field_exists($table, $field)) {
$dbman->add_field($table, $field);
}
/// forum savepoint reached
upgrade_mod_savepoint($result, 2008090800, 'forum');
}
if ($result && $oldversion < 2009042000) {
/// Rename field format on table forum_posts to messageformat
$table = new xmldb_table('forum_posts');
$field = new xmldb_field('format', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'message');
/// Launch rename field format
$dbman->rename_field($table, $field, 'messageformat');
/// forum savepoint reached
upgrade_mod_savepoint($result, 2009042000, 'forum');
}
if ($result && $oldversion < 2009042001) {
/// Define field messagetrust to be added to forum_posts
$table = new xmldb_table('forum_posts');
$field = new xmldb_field('messagetrust', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'messageformat');
/// Launch add field messagetrust
$dbman->add_field($table, $field);
/// forum savepoint reached
upgrade_mod_savepoint($result, 2009042001, 'forum');
}
if ($result && $oldversion < 2009042002) {
$trustmark = '#####TRUSTTEXT#####';
$rs = $DB->get_recordset_sql("SELECT * FROM {forum_posts} WHERE message LIKE '$trustmark%'");
foreach ($rs as $post) {
if (strpos($post->entrycomment, $trustmark) !== 0) {
// probably lowercase in some DBs
continue;
}
$post->message = trusttext_strip($post->message);
$post->messagetrust = 1;
$DB->update_record('forum_posts', $post);
}
$rs->close();
/// forum savepoint reached
upgrade_mod_savepoint($result, 2009042002, 'forum');
}
if ($result && $oldversion < 2009042003) {
/// Define field introformat to be added to forum
$table = new xmldb_table('forum');
$field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'intro');
/// Launch add field introformat
$dbman->add_field($table, $field);
/// forum savepoint reached
upgrade_mod_savepoint($result, 2009042003, 'forum');
}
if ($result && $oldversion < 2009042004) {
/// set format to current
$DB->set_field('forum', 'introformat', FORMAT_MOODLE, array());
/// quiz savepoint reached
upgrade_mod_savepoint($result, 2009042004, 'forum');
}
/// Dropping all enums/check contraints from core. MDL-18577
if ($result && $oldversion < 2009042700) {
/// Changing list of values (enum) of field type on table forum to none
$table = new xmldb_table('forum');
$field = new xmldb_field('type', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'general', 'course');
/// Launch change of list of values for field type
$dbman->drop_enum_from_field($table, $field);
/// forum savepoint reached
upgrade_mod_savepoint($result, 2009042700, 'forum');
}
if ($result && $oldversion < 2009050400) {
/// Clean existing wrong rates. MDL-18227
$DB->delete_records('forum_ratings', array('post' => 0));
/// forum savepoint reached
upgrade_mod_savepoint($result, 2009050400, 'forum');
}
if($result && $oldversion < 2010042800) {
//migrate forumratings to the central rating table
require_once($CFG->dirroot . '/lib/db/upgradelib.php');
//forum ratings only have a single time column so use it for both time created and modified
$sql = "INSERT INTO {rating} (contextid, scaleid, itemid, rating, userid, timecreated, timemodified)
SELECT cxt.id, f.scale, r.post AS itemid, r.rating, r.userid, r.time AS timecreated, r.time AS timemodified
FROM {forum_ratings} r
JOIN {forum_posts} p ON p.id=r.post
JOIN {forum_discussions} d ON d.id=p.discussion
JOIN {forum} f ON f.id=d.forum
JOIN {course_modules} cm ON cm.instance=f.id
JOIN {context} cxt ON cxt.instanceid=cm.id
JOIN {modules} m ON m.id=cm.module
WHERE m.name = :modname AND cxt.contextlevel = :contextlevel";
$params['modname'] = 'forum';
$params['contextlevel'] = CONTEXT_MODULE;
$DB->execute($sql, $params);
//now drop forum_ratings
$table = new xmldb_table('forum_ratings');
if ($dbman->table_exists($table)) {
$dbman->drop_table($table);
}
upgrade_mod_savepoint($result, 2010042800, 'forum');
}
return $result;
}
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