/**
* Merges the contents of this discussion into another discussion.
* @param forum_discussion $targetdiscussion Target discussion
* @param int $userid User ID (0 = current)
* @param bool $log True to log this action
*/
public function merge_into($targetdiscussion, $userid = 0, $log = true)
{
global $CFG;
forum_utils::start_transaction();
// Update parent post id of root post
$record = new stdClass();
$record->id = $this->discussionfields->postid;
$record->parentpostid = $targetdiscussion->discussionfields->postid;
forum_utils::update_record('forumng_posts', $record);
// Move all posts into new discussion
forum_utils::execute_sql("UPDATE {$CFG->prefix}forumng_posts SET " . "discussionid=" . $targetdiscussion->get_id() . " WHERE discussionid=" . $this->get_id());
// Delete this discussion
forum_utils::delete_records('forumng_discussions', 'id', $this->discussionfields->id);
// Merge attachments (if any)
$oldfolder = $this->get_attachment_folder();
$newfolder = $targetdiscussion->get_attachment_folder();
if (is_dir($oldfolder)) {
$handle = forum_utils::opendir($oldfolder);
$madenewfolder = false;
while (false !== ($name = readdir($handle))) {
if ($name != '.' && $name != '..') {
if (!$madenewfolder) {
check_dir_exists($newfolder, true, true);
$madenewfolder = true;
}
$oldname = $oldfolder . '/' . $name;
$newname = $newfolder . '/' . $name;
forum_utils::rename($oldname, $newname);
}
}
closedir($handle);
}
// Merging the discussion into another might cause completion changes
// (if there was a requirement for discussions and this is no longer
// a discussion in its own right).
$this->update_completion(false);
if ($log) {
$this->log('merge discussion d' . $targetdiscussion->get_id());
}
forum_utils::finish_transaction();
$this->uncache();
$targetdiscussion->uncache();
}
private function add_attachment($path, $courseid = 0, $forumid = 0, $draftid = 0)
{
// Check source file exists
if (!file_exists($path)) {
throw new forum_exception("Missing file {$path}");
}
// Get folder
if (isset($this)) {
$folder = $this->get_attachment_folder();
} else {
$folder = self::get_attachment_folder($courseid, $forumid, $draftid);
}
if (!check_dir_exists($folder, true, true)) {
throw new forum_exception("Failed to create attachment folder {$folder}");
}
// Check target path doesn't already exist. If it does, delete existing
// file.
$target = $folder . '/' . basename($path);
if (file_exists($target)) {
forum_utils::unlink($target);
}
// Move new file into place
forum_utils::rename($path, $target);
}
/**
* Splits this post to become a new discussion
* @param $newsubject
* @param bool $log True to log action
* @return int ID of new discussion
*/
function split($newsubject, $log = true)
{
global $CFG;
$this->require_children();
// Begin a transaction
forum_utils::start_transaction();
$olddiscussion = $this->get_discussion();
// Create new discussion
$newest = null;
$this->find_newest_child($newest);
$newdiscussionid = $olddiscussion->clone_for_split($this->get_id(), $newest->get_id());
// Update all child posts
$list = array();
$this->list_child_ids($list);
unset($list[0]);
// Don't include this post itself
if (count($list) > 0) {
$inorequals = forum_utils::in_or_equals($list);
forum_utils::execute_sql("\nUPDATE\n {$CFG->prefix}forumng_posts\nSET\n discussionid = {$newdiscussionid}\nWHERE\n id {$inorequals}");
}
// Update this post
$changes = new stdClass();
$changes->id = $this->get_id();
$changes->subject = addslashes($newsubject);
$changes->parentpostid = null;
//When split the post, reset the important to 0 so that it is not highlighted.
$changes->important = 0;
// Note don't update modified time, or it makes this post unread,
// which isn't very helpful
$changes->discussionid = $newdiscussionid;
forum_utils::update_record('forumng_posts', $changes);
// Update read data if relevant
if (forum::enabled_read_tracking() && $newest->get_modified() >= forum::get_read_tracking_deadline()) {
$rs = forum_utils::get_recordset_sql("\nSELECT\n userid, time\nFROM\n {$CFG->prefix}forumng_read\nWHERE\n discussionid = " . $olddiscussion->get_id() . "\n AND time >= " . $this->get_created());
while ($rec = rs_fetch_next_record($rs)) {
$rec->discussionid = $newdiscussionid;
forum_utils::insert_record('forumng_read', $rec);
}
rs_close($rs);
}
$olddiscussion->possible_lastpost_change();
// Move attachments
$olddiscussionfolder = $olddiscussion->get_attachment_folder();
$newdiscussionfolder = $olddiscussion->get_attachment_folder(0, 0, $newdiscussionid);
if (is_dir($olddiscussionfolder)) {
// Put this post back on the list
$list[0] = $this->get_id();
// Loop through all posts; move attachments if present
$madenewfolder = false;
foreach ($list as $id) {
$oldfolder = $olddiscussionfolder . '/' . $id;
$newfolder = $newdiscussionfolder . '/' . $id;
if (is_dir($oldfolder)) {
if (!$madenewfolder) {
check_dir_exists($newfolder, true, true);
$madenewfolder = true;
}
forum_utils::rename($oldfolder, $newfolder);
}
}
}
if ($log) {
$this->log('split post');
}
forum_utils::finish_transaction();
$this->get_discussion()->uncache();
// If discussion-based completion is turned on, this may enable someone
// to complete
if ($this->get_forum()->get_completion_discussions()) {
$this->update_completion(true);
}
return $newdiscussionid;
}