/**
* delete post and sub-posts
* @param integer $post: ID
* @access public
* @return integer 0 or thread-ID
*/
public function deletePost($post)
{
global $ilDB;
include_once "./Modules/Forum/classes/class.ilObjForum.php";
// delete tree and get id's of all posts to delete
$p_node = $this->getPostNode($post);
$del_id = $this->deletePostTree($p_node);
// Delete User read entries
foreach ($del_id as $post_id) {
ilObjForum::_deleteReadEntries($post_id);
}
// DELETE ATTACHMENTS ASSIGNED TO POST
$this->__deletePostFiles($del_id);
$dead_pos = count($del_id);
$dead_thr = 0;
// if deletePost is thread opener ...
if ($p_node["parent"] == 0) {
// delete thread access data
include_once './Modules/Forum/classes/class.ilObjForum.php';
ilObjForum::_deleteAccessEntries($p_node['tree']);
// delete thread
$dead_thr = $p_node["tree"];
$statement = $ilDB->manipulateF('
DELETE FROM frm_threads
WHERE thr_pk = %s', array('integer'), array($p_node['tree']));
// update num_threads
$statement = $ilDB->manipulateF('
UPDATE frm_data
SET top_num_threads = top_num_threads - 1
WHERE top_frm_fk = %s', array('integer'), array($this->id));
// delete all related news
$posset = $ilDB->queryf('
SELECT * FROM frm_posts
WHERE pos_thr_fk = %s', array('integer'), array($p_node['tree']));
while ($posrec = $ilDB->fetchAssoc($posset)) {
include_once "./Services/News/classes/class.ilNewsItem.php";
$news_id = ilNewsItem::getFirstNewsIdForContext($this->id, "frm", $posrec["pos_pk"], "pos");
if ($news_id > 0) {
$news_item = new ilNewsItem($news_id);
$news_item->delete();
}
try {
include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
$mobs = ilObjMediaObject::_getMobsOfObject('frm:html', $posrec['pos_pk']);
foreach ($mobs as $mob) {
if (ilObjMediaObject::_exists($mob)) {
ilObjMediaObject::_removeUsage($mob, 'frm:html', $posrec['pos_pk']);
$mob_obj = new ilObjMediaObject($mob);
$mob_obj->delete();
}
}
} catch (Exception $e) {
}
}
// delete all posts of this thread
$statement = $ilDB->manipulateF('
DELETE FROM frm_posts
WHERE pos_thr_fk = %s', array('integer'), array($p_node['tree']));
} else {
// delete this post and its sub-posts
for ($i = 0; $i < $dead_pos; $i++) {
$statement = $ilDB->manipulateF('
DELETE FROM frm_posts
WHERE pos_pk = %s', array('integer'), array($del_id[$i]));
// delete related news item
include_once "./Services/News/classes/class.ilNewsItem.php";
$news_id = ilNewsItem::getFirstNewsIdForContext($this->id, "frm", $del_id[$i], "pos");
if ($news_id > 0) {
$news_item = new ilNewsItem($news_id);
$news_item->delete();
}
try {
include_once 'Services/MediaObjects/classes/class.ilObjMediaObject.php';
$mobs = ilObjMediaObject::_getMobsOfObject('frm:html', $del_id[$i]);
foreach ($mobs as $mob) {
if (ilObjMediaObject::_exists($mob)) {
ilObjMediaObject::_removeUsage($mob, 'frm:html', $del_id[$i]);
$mob_obj = new ilObjMediaObject($mob);
$mob_obj->delete();
}
}
} catch (Exception $e) {
}
}
// update num_posts in frm_threads
$statement = $ilDB->manipulateF('
UPDATE frm_threads
SET thr_num_posts = thr_num_posts - %s
WHERE thr_pk = %s', array('integer', 'integer'), array($dead_pos, $p_node['tree']));
// get latest post of thread and update last_post
$res1 = $ilDB->queryf('
SELECT * FROM frm_posts
WHERE pos_thr_fk = %s
ORDER BY pos_date DESC', array('integer'), array($p_node['tree']));
if ($res1->numRows() == 0) {
$lastPost_thr = "";
} else {
$z = 0;
while ($selData = $ilDB->fetchAssoc($res1)) {
if ($z > 0) {
break;
}
$lastPost_thr = $selData["pos_top_fk"] . "#" . $selData["pos_thr_fk"] . "#" . $selData["pos_pk"];
$z++;
}
}
$statement = $ilDB->manipulateF('
UPDATE frm_threads
SET thr_last_post = %s
WHERE thr_pk = %s', array('text', 'integer'), array($lastPost_thr, $p_node['tree']));
}
// update num_posts in frm_data
$statement = $ilDB->manipulateF('
UPDATE frm_data
SET top_num_posts = top_num_posts - %s
WHERE top_frm_fk = %s', array('integer', 'integer'), array($dead_pos, $this->id));
// get latest post of forum and update last_post
$res2 = $ilDB->queryf('
SELECT * FROM frm_posts, frm_data
WHERE pos_top_fk = top_pk
AND top_frm_fk = %s
ORDER BY pos_date DESC', array('integer'), array($this->id));
if ($res2->numRows() == 0) {
$lastPost_top = "";
} else {
$z = 0;
while ($selData = $ilDB->fetchAssoc($res2)) {
if ($z > 0) {
break;
}
$lastPost_top = $selData["pos_top_fk"] . "#" . $selData["pos_thr_fk"] . "#" . $selData["pos_pk"];
$z++;
}
}
$statement = $ilDB->manipulateF('
UPDATE frm_data
SET top_last_post = %s
WHERE top_frm_fk = %s', array('text', 'integer'), array($lastPost_top, $this->id));
return $dead_thr;
}
/**
* @param $obj_id
* @param $source_id
* @param $target_id
* @throws ilException
*/
public static function mergeThreads($obj_id, $source_id, $target_id)
{
// selected source & target objects
$source_thread_obj = new ilForumTopic((int) $source_id);
$target_thread_obj = new ilForumTopic((int) $target_id);
if ($source_thread_obj->getForumId() != $target_thread_obj->getForumId()) {
throw new ilException('not_allowed_to_merge_into_another_forum');
}
// use the "older" thread as target
if ($source_thread_obj->getCreateDate() > $target_thread_obj->getCreateDate()) {
$merge_thread_source = $source_thread_obj;
$merge_thread_target = $target_thread_obj;
} else {
$merge_thread_source = $target_thread_obj;
$merge_thread_target = $source_thread_obj;
}
$thread_subject = $target_thread_obj->getSubject();
// remember if the threads are open or closed and then close both threads !
$targed_was_closed = $merge_thread_target->isClosed();
$merge_thread_source->close();
if ($targed_was_closed == false) {
$merge_thread_target->close();
}
$source_all_posts = $merge_thread_source->getAllPosts();
$source_root_node = $merge_thread_source->getFirstPostNode();
$target_root_node = $merge_thread_target->getFirstPostNode();
$add_difference = $target_root_node->getRgt();
// update target root node rgt
include_once 'Modules/Forum/classes/class.ilForumPostsTree.php';
// $new_target_rgt = ($target_root_node->getRgt() + $source_root_node->getRgt() + 1);
$new_target_rgt = $target_root_node->getRgt() + $source_root_node->getRgt();
ilForumPostsTree::updateTargetRootRgt($target_root_node->getId(), $new_target_rgt);
$new_target_root = $target_root_node->getId();
// get source post tree and update posts tree
foreach ($source_all_posts as $post) {
$post_obj = new ilForumPost($post->pos_pk);
$posts_tree_obj = new ilForumPostsTree();
$posts_tree_obj->setPosFk($post->pos_pk);
if ($post_obj->getParentId() == 0) {
$posts_tree_obj->setParentPos($new_target_root);
//$posts_tree_obj->setRgt(($post_obj->getRgt() + $add_difference));
$posts_tree_obj->setRgt($post_obj->getRgt() + $add_difference - 1);
$posts_tree_obj->setLft($target_root_node->getRgt());
$posts_tree_obj->setDepth($post_obj->getDepth() + 1);
$posts_tree_obj->setSourceThreadId($merge_thread_source->getId());
$posts_tree_obj->setTargetThreadId($merge_thread_target->getId());
$posts_tree_obj->mergeParentPos();
} else {
$posts_tree_obj->setRgt($post_obj->getRgt() + $add_difference - 1);
$posts_tree_obj->setLft($post_obj->getLft() + $add_difference - 1);
$posts_tree_obj->setDepth($post_obj->getDepth() + 1);
$posts_tree_obj->setSourceThreadId($merge_thread_source->getId());
$posts_tree_obj->setParentPos($post_obj->getParentId());
$posts_tree_obj->setTargetThreadId($merge_thread_target->getId());
$posts_tree_obj->merge();
}
}
// update frm_posts pos_thr_fk = target_thr_id
include_once 'Modules/Forum/classes/class.ilForumPost.php';
ilForumPost::mergePosts($merge_thread_source->getId(), $merge_thread_target->getId());
// check notifications
include_once 'Modules/Forum/classes/class.ilForumNotification.php';
ilForumNotification::mergeThreadNotificiations($merge_thread_source->getId(), $merge_thread_target->getId());
// delete frm_thread_access entries
include_once './Modules/Forum/classes/class.ilObjForum.php';
ilObjForum::_deleteAccessEntries($merge_thread_source->getId());
// update frm_user_read
ilObjForum::mergeForumUserRead($merge_thread_source->getId(), $merge_thread_target->getId());
// update visits, thr_num_posts, last_post, subject
$post_date_source = $merge_thread_source->getLastPost()->getCreateDate();
$post_date_target = $merge_thread_target->getLastPost()->getCreateDate();
$target_last_post = $merge_thread_target->getLastPostString();
$exp = explode('#', $target_last_post);
if ($post_date_source > $post_date_target) {
$exp[2] = $merge_thread_source->getLastPost()->getId();
} else {
$exp[2] = $merge_thread_target->getLastPost()->getId();
}
$new_thr_last_post = implode('#', $exp);
$num_posts_source = (int) $merge_thread_source->getNumPosts();
$num_visits_source = (int) $merge_thread_source->getVisits();
$num_posts_target = (int) $merge_thread_target->getNumPosts();
$num_visits_target = (int) $merge_thread_source->getVisits();
$frm_topic_obj = new ilForumTopic(0, false, true);
$frm_topic_obj->setNumPosts($num_posts_source + $num_posts_target);
$frm_topic_obj->setVisits($num_visits_source + $num_visits_target);
$frm_topic_obj->setLastPostString($new_thr_last_post);
$frm_topic_obj->setSubject($thread_subject);
$frm_topic_obj->setId($merge_thread_target->getId());
$frm_topic_obj->updateMergedThread();
// update frm_data: top_last_post , top_num_threads
ilForum::updateLastPostByObjId($obj_id);
// reopen target if was not "closed" before merging
if (!$targed_was_closed) {
$merge_thread_target->reopen();
}
// delete source thread
ilForumTopic::deleteByThreadId($merge_thread_source->getId());
}
