/**
* Copy the discussion and its posts to another forum and/or group.
* @param mod_forumng $targetforum Forum to copy the discussion to
* @param int $groupid If 'All participants' has been selected from the
* separate groups dropdown box, use default value 0
*/
public function copy($targetforum, $groupid)
{
global $SESSION, $DB;
$oldforum = $this->get_forum();
$oldforumngid = $oldforum->get_id();
$oldcourseid = $oldforum->get_course_id();
$targetforumngid = $targetforum->get_id();
$targetcourseid = $targetforum->get_course_id();
// Clone the old discussion.
$discussionobj = clone $this->discussionfields;
unset($discussionobj->id);
// Update the forumngid and gruopid to the target forumngid and selected groupid.
$discussionobj->forumngid = $targetforumngid;
unset($discussionobj->groupid);
if ($targetforum->get_group_mode() && $groupid) {
$discussionobj->groupid = $groupid;
}
$transaction = $DB->start_delegated_transaction();
$newdiscussionid = $DB->insert_record('forumng_discussions', $discussionobj);
$rs = $DB->get_recordset('forumng_posts', array('discussionid' => $this->get_id()));
// $newids and $parentused are temp arrays used to
// $newids is a array of new postids using the indices of its old postids
// Update the parentid of the post records copied over
// $hasattachments is a temp array for record the posts which has attachments.
$newids = array();
$parentsused = array();
$hasattachments = array();
foreach ($rs as $postrec) {
$oldpostid = $postrec->id;
unset($postrec->id);
$postrec->discussionid = $newdiscussionid;
$postrec->mailstate = mod_forumng::MAILSTATE_DIGESTED;
$newpostid = $DB->insert_record('forumng_posts', $postrec);
$newids[$oldpostid] = $newpostid;
if ($postrec->parentpostid) {
$parentsused[$postrec->parentpostid] = true;
}
if ($postrec->attachments == 1) {
$hasattachments[$oldpostid] = $newpostid;
}
}
$rs->close();
// Duplicate core ratings if enabled and both forums in same course.
if ($oldforum->get_enableratings() == mod_forumng::FORUMNG_STANDARD_RATING && $oldforum->get_course(true)->id == $targetforum->get_course(true)->id) {
list($in, $inparams) = $DB->get_in_or_equal(array_keys($newids));
if ($ratings = $DB->get_records_sql("SELECT * FROM {rating} WHERE itemid {$in} AND component\n = ? AND ratingarea = ? AND contextid = ?", array_merge($inparams, array('mod_forumng', 'post', $oldforum->get_context(true)->id)))) {
foreach ($ratings as $rating) {
$newrate = new stdClass();
$newrate->contextid = $targetforum->get_context(true)->id;
$newrate->component = 'mod_forumng';
$newrate->ratingarea = 'post';
$newrate->itemid = $newids[$rating->itemid];
$newrate->scaleid = $rating->scaleid;
$newrate->userid = $rating->userid;
$newrate->rating = $rating->rating;
$newrate->timecreated = $rating->timecreated;
$newrate->timemodified = time();
$DB->insert_record('rating', $newrate);
}
$targetforum->update_grades();
}
}
// Update the postid and lastpostid in the discussion table no matter if they
// are null or not
$newpostid = $newids[$discussionobj->postid];
$newlastpostid = $newids[$discussionobj->lastpostid];
$DB->execute("UPDATE {forumng_discussions} SET postid = ?, lastpostid = ? WHERE id = ?", array($newpostid, $newlastpostid, $newdiscussionid));
foreach ($parentsused as $key => $value) {
$newparentpostid = $newids[$key];
// Update the parentpostids which have just been copied over.
$DB->execute("UPDATE {forumng_posts} SET parentpostid = ? " . "WHERE parentpostid = ? AND discussionid = ?", array($newparentpostid, $key, $newdiscussionid));
}
// Copy attachments
$fs = get_file_storage();
$oldfilecontext = $oldforum->get_context(true);
$newfilecontext = $targetforum->get_context(true);
foreach ($hasattachments as $oldpostid => $newpostid) {
foreach (array('attachment', 'message') as $filearea) {
$oldfiles = $fs->get_area_files($oldfilecontext->id, 'mod_forumng', $filearea, $oldpostid, 'id', false);
foreach ($oldfiles as $oldfile) {
$filerecord = new stdClass();
$filerecord->contextid = $newfilecontext->id;
$filerecord->itemid = $newpostid;
$fs->create_file_from_storedfile($filerecord, $oldfile);
}
}
}
// Update the search data after the copy
$newdiscussion = self::get_from_id($newdiscussionid, $this->get_forum()->get_course_module_id(), -1);
$root = $newdiscussion->get_root_post();
$root->search_update();
$root->search_update_children();
$transaction->allow_commit();
// Update any discussion tags.
$tagslist = $this->get_tags();
if ($tagslist) {
$tags = array();
foreach ($tagslist as $key => $value) {
array_push($tags, $value);
}
$newdiscussion->edit_settings(self::NOCHANGE, self::NOCHANGE, self::NOCHANGE, self::NOCHANGE, self::NOCHANGE, $tags);
}
}