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<?php // $Id$
// Displays a post, and all the posts below it.
// If no post is given, displays all posts in a discussion
require_once("../../config.php");
require_once("lib.php");
$d = required_param('d', PARAM_INT); // Discussion ID
$parent = optional_param('parent', 0, PARAM_INT); // If set, then display this post and all children.
$mode = optional_param('mode', 0, PARAM_INT); // If set, changes the layout of the thread
$move = optional_param('move', 0, PARAM_INT); // If set, moves this discussion to another forum
$mark = optional_param('mark', 0, PARAM_INT); // Used for tracking read posts if user initiated.
$postid = optional_param('postid', 0, PARAM_INT); // Used for tracking read posts if user initiated.
if (! $discussion = get_record("forum_discussions", "id", $d)) {
error("Discussion ID was incorrect or no longer exists");
}
if (! $course = get_record("course", "id", $discussion->course)) {
error("Course ID is incorrect - discussion is faulty");
}
if (! $forum = get_record("forum", "id", $discussion->forum)) {
notify("Bad forum ID stored in this discussion");
}
if ($forum->type == "teacher") {
require_login($course->id);
if (!isteacher($course->id)) {
error("You must be a $course->teacher to view this forum");
}
} elseif ($forum->type == "news") {
if (!((isadmin() and !empty($CFG->admineditalways))
|| isteacher($course->id)
|| (!empty($USER->id) && $USER->id == $discussion->userid)
|| (($discussion->timestart == 0 || $discussion->timestart <= time())
&& ($discussion->timeend == 0 || $discussion->timeend > time())))) {
error('Discussion ID was incorrect or no longer exists', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
}
} else {
if (! $cm = get_coursemodule_from_instance("forum", $discussion->forum, $course->id)) {
error("Course Module ID was incorrect");
}
require_course_login($course, false, $cm);
}
if (!empty($move)) {
if (!isteacher($course->id)) {
error("Only teachers can do that!");
}
if ($forum = get_record("forum", "id", $move)) {
if (!forum_move_attachments($discussion, $move)) {
notify("Errors occurred while moving attachment directories - check your file permissions");
}
if (!$fromforum = get_record("forum", "id", $discussion->forum)) {
notify('Bad forum ID stored in this discussion');
}
$discussion->forum = $forum->id;
// Had to comment out the following line because the timemodified field is used to sort the list
// of discussions and also to provide the "Last post" date. It should really be renamed to timelastpost.
// $discussion->timemodified = time();
if (update_record('forum_discussions', $discussion)) {
// Update RSS feeds for both from and to forums.
require_once('rsslib.php');
require_once($CFG->libdir.'/rsslib.php');
// Delete the RSS files for the 2 forums because we want to force
// the regeneration of the feeds since the discussions have been
// moved.
if (!forum_rss_delete_file($forum) || !forum_rss_delete_file($fromforum)) {
notify('Could not purge the cached RSS feeds for the source and/or'.
'destination forum(s) - check your file permissionsforums');
}
}
if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id",
$cm->id);
} else {
add_to_log($course->id, "forum", "move discussion", "discuss.php?d=$discussion->id", "$discussion->id");
}
$discussionmoved = true;
} else {
error("You can't move to that forum - it doesn't exist!");
}
}
$logparameters = "d=$discussion->id";
if ($parent) {
$logparameters .= "&amp;parent=$parent";
}
if ($cm = get_coursemodule_from_instance("forum", $forum->id, $course->id)) {
add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id", $cm->id);
} else {
add_to_log($course->id, "forum", "view discussion", "discuss.php?$logparameters", "$discussion->id");
}
unset($SESSION->fromdiscussion);
if ($mode) {
if (isguest()) {
$USER->preference['forum_displaymode'] = $mode; // don't save it in database
} else {
set_user_preference('forum_displaymode', $mode);
}
}
$displaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);
if ($parent) {
if (abs($displaymode) == 1) { // If flat AND parent, then force nested display this time
$displaymode = 3;
}
} else {
$parent = $discussion->firstpost;
$navtail = format_string($discussion->name);
}
if (!forum_user_can_view_post($parent, $course, $cm, $forum, $discussion)) {
error('You do not have permissions to view this post', "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
}
if (! $post = forum_get_post_full($parent)) {
error("Discussion no longer exists", "$CFG->wwwroot/mod/forum/view.php?f=$forum->id");
}
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum) &&
$CFG->forum_usermarksread) {
if ($mark == 'read') {
forum_tp_add_read_record($USER->id, $postid, $discussion->id, $forum->id);
} else if ($mark == 'unread') {
forum_tp_delete_read_records($USER->id, $postid);
}
}
if (empty($navtail)) {
$navtail = "<a href=\"discuss.php?d=$discussion->id\">".format_string($discussion->name,true)."</a> -> ".format_string($post->subject);
}
$navmiddle = "<a href=\"../forum/index.php?id=$course->id\">".get_string("forums", "forum")."</a> -> <a href=\"../forum/view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
$searchform = forum_search_form($course);
if ($course->category) {
print_header("$course->shortname: ".format_string($discussion->name), "$course->fullname",
"<a href=\"../../course/view.php?id=$course->id\">$course->shortname</a> ->
$navmiddle -> $navtail", "", "", true, $searchform, navmenu($course, $cm));
} else {
print_header("$course->shortname: ".format_string($discussion->name), "$course->fullname",
"$navmiddle -> $navtail", "", "", true, $searchform, navmenu($course, $cm));
}
/// Check to see if groups are being used in this forum
/// If so, make sure the current person is allowed to see this discussion
/// Also, if we know they should be able to reply, then explicitly set $canreply
$canreply = NULL; /// No override one way or the other
if ($forum->type == "teacher") {
$groupmode = NOGROUPS;
} else {
$groupmode = groupmode($course, $cm);
}
if ($groupmode and !isteacheredit($course->id)) { // Groups must be kept separate
//change this to ismember
$mygroupid = mygroupid($course->id);//only useful if 0, otherwise it's an array now
if ($groupmode == SEPARATEGROUPS) {
require_login();
if ((empty($mygroupid) and $discussion->groupid == -1) || (ismember($discussion->groupid) || $mygroupid == $discussion->groupid)) {
$canreply = true;
} elseif ($discussion->groupid == -1) {
$canreply = false;
} else {
print_heading("Sorry, you can't see this discussion because you are not in this group");
print_footer($course);
die;
}
} else if ($groupmode == VISIBLEGROUPS) {
$canreply = ((empty($mygroupid) and $discussion->groupid == -1) || (ismember($discussion->groupid) || $mygroupid == $discussion->groupid));
}
}
/// Print the controls across the top
echo '<table width="100%"><tr><td width="33%">';
if ($groupmode == VISIBLEGROUPS or ($groupmode and isteacheredit($course->id))) {
if ($groups = get_records_menu('groups', 'courseid', $course->id, 'name ASC', 'id,name')) {
print_group_menu($groups, $groupmode, $discussion->groupid, "view.php?id=$cm->id&amp;group=");
}
}
echo "</td><td width=\"33%\">";
forum_print_mode_form($discussion->id, $displaymode);
echo "</td><td width=\"33%\">";
if (isteacher($course->id) && $forum->type != "teacher") { // Popup menu to move discussions to other forums
if ($forums = get_all_instances_in_course("forum", $course)) {
if ($course->format == 'weeks') {
$strsection = get_string("week");
} else {
$strsection = get_string("topic");
}
$section = -1;
foreach ($forums as $courseforum) {
if (!empty($courseforum->section) and $section != $courseforum->section) {
$forummenu[] = "-------------- $strsection $courseforum->section --------------";
}
$section = $courseforum->section;
if ($courseforum->id != $forum->id) {
$url = "discuss.php?d=$discussion->id&amp;move=$courseforum->id";
$forummenu[$url] = format_string($courseforum->name,true);
}
}
if (!empty($forummenu)) {
echo "<div align=\"right\">";
echo popup_form("$CFG->wwwroot/mod/forum/", $forummenu, "forummenu", "",
get_string("movethisdiscussionto", "forum"), "", "", true);
echo "</div>";
}
}
}
echo "</td></tr></table>";
if (!empty($forum->blockafter) && !empty($forum->blockperiod)) {
$a->blockafter = $forum->blockafter;
$a->blockperiod = get_string('secondstotime'.$forum->blockperiod);
notify(get_string('thisforumisthrottled','forum',$a));
}
if ($forum->type == 'qanda' && !isteacher($forum->course) && !forum_user_has_posted($forum->id,$discussion->id,$USER->id)) {
notify(get_string('qandanotify','forum'));
}
if (isset($discussionmoved)) {
notify(get_string("discussionmoved", "forum", format_string($forum->name,true)));
}
/// Print the actual discussion
forum_print_discussion($course, $forum, $discussion, $post, $displaymode, $canreply);
print_footer($course);
?>
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