예제 #1
0
 /**
  * @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());
 }