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bbbf2d4015
======================================= WARNING: DEV IS CURRENTLY VERY UNSTABLE. This is a mega-checkin of the new Roles system. A lot of changes have been made in core and modules. Currently there are a lot of rough edges and known problems. We are working hard on these .. .the reason for getting this into HEAD at this stage is enable us to move faster (our branch was diverging from HEAD too much). Please keep an eye on http://docs.moodle.org/en/Roles for current status and information for developers on how to use the new Roles system.
293 lines
12 KiB
PHP
293 lines
12 KiB
PHP
<?php // $Id$
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//This file adds support to rss feeds generation
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//This function is the main entry point to forum
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//rss feeds generation. Foreach site forum with rss enabled
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//build one XML rss structure.
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function forum_rss_feeds() {
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global $CFG;
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$status = true;
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//Check CFG->enablerssfeeds
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if (empty($CFG->enablerssfeeds)) {
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//Some debug...
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if ($CFG->debug > 7) {
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echo "DISABLED (admin variables)";
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}
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//Check CFG->forum_enablerssfeeds
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} else if (empty($CFG->forum_enablerssfeeds)) {
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//Some debug...
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if ($CFG->debug > 7) {
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echo "DISABLED (module configuration)";
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}
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//It's working so we start...
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} else {
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//Iterate over all forums
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if ($forums = get_records("forum")) {
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foreach ($forums as $forum) {
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if (!empty($forum->rsstype) && !empty($forum->rssarticles) && $status) {
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$filename = rss_file_name('forum', $forum); // RSS file
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//First let's make sure there is work to do by checking existing files
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if (file_exists($filename)) {
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if ($lastmodified = filemtime($filename)) {
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if (!forum_rss_newstuff($forum, $lastmodified)) {
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continue;
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}
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}
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}
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//Ignore hidden forums
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if (!instance_is_visible('forum',$forum)) {
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if (file_exists($filename)) {
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@unlink($filename);
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}
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continue;
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}
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mtrace("Updating RSS feed for ".format_string($forum->name,true).", ID: $forum->id");
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//Some debug...
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if ($CFG->debug > 7) {
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echo "ID: $forum->id->";
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}
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//Get the XML contents
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$result = forum_rss_feed($forum);
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//Save the XML contents to file
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if (!empty($result)) {
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$status = rss_save_file("forum",$forum,$result);
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}
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//Some debug...
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if ($CFG->debug > 7) {
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if (empty($result)) {
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echo "(empty) ";
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} else {
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if (!empty($status)) {
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echo "OK ";
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} else {
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echo "FAIL ";
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}
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}
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}
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}
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}
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}
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}
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return $status;
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}
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function forum_rss_newstuff($forum, $time) {
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// If there is new stuff in the forum since $time then this returns
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// true. Otherwise it returns false.
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if ($forum->rsstype == 1) {
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$items = forum_rss_feed_discussions($forum, $time);
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} else {
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$items = forum_rss_feed_posts($forum, $time);
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}
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return (!empty($items));
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}
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//This function return the XML rss contents about the forum record passed as parameter
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//It returns false if something is wrong
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function forum_rss_feed($forum) {
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global $CFG;
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$status = true;
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//Check CFG->enablerssfeeds
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if (empty($CFG->enablerssfeeds)) {
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//Some debug...
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if ($CFG->debug > 7) {
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echo "DISABLED (admin variables)";
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}
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//Check CFG->forum_enablerssfeeds
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} else if (empty($CFG->forum_enablerssfeeds)) {
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//Some debug...
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if ($CFG->debug > 7) {
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echo "DISABLED (module configuration)";
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}
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//It's working so we start...
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} else {
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//Check the forum has rss activated
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if (!empty($forum->rsstype) && !empty($forum->rssarticles)) {
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//Depending of the forum->rsstype, we are going to execute, different sqls
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if ($forum->rsstype == 1) { //Discussion RSS
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$items = forum_rss_feed_discussions($forum);
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} else { //Post RSS
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$items = forum_rss_feed_posts($forum);
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}
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//Now, if items, we begin building the structure
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if (!empty($items)) {
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//First all rss feeds common headers
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$header = rss_standard_header(strip_tags(format_string($forum->name,true)),
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$CFG->wwwroot."/mod/forum/view.php?f=".$forum->id,
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format_string($forum->intro,true));
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//Now all the rss items
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if (!empty($header)) {
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$articles = rss_add_items($items);
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}
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//Now all rss feeds common footers
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if (!empty($header) && !empty($articles)) {
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$footer = rss_standard_footer();
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}
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//Now, if everything is ok, concatenate it
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if (!empty($header) && !empty($articles) && !empty($footer)) {
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$status = $header.$articles.$footer;
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} else {
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$status = false;
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}
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} else {
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$status = false;
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}
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}
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}
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return $status;
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}
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//This function returns "items" record array to be used to build the rss feed
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//for a Type=discussions forum
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function forum_rss_feed_discussions($forum, $newsince=0) {
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global $CFG;
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$items = array();
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if ($newsince) {
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$newsince = " AND p.modified > '$newsince'";
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} else {
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$newsince = "";
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}
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if ($recs = get_records_sql ("SELECT d.id AS discussionid,
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d.name AS discussionname,
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u.id AS userid,
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u.firstname AS userfirstname,
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u.lastname AS userlastname,
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p.message AS postmessage,
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p.created AS postcreated,
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p.format AS postformat
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FROM {$CFG->prefix}forum_discussions d,
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{$CFG->prefix}forum_posts p,
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{$CFG->prefix}user u
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WHERE d.forum = '$forum->id' AND
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p.discussion = d.id AND
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p.parent = 0 AND
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u.id = p.userid $newsince
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ORDER BY p.created desc")) {
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//Are we just looking for new ones? If so, then return now.
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if ($newsince) {
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return true;
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}
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//Iterate over each discussion to get forum->rssarticles records
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$articlesleft = $forum->rssarticles;
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$item = NULL;
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$user = NULL;
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foreach ($recs as $rec) {
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unset($item);
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unset($user);
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$item->title = $rec->discussionname;
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$user->firstname = $rec->userfirstname;
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$user->lastname = $rec->userlastname;
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$item->author = fullname($user);
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$item->pubdate = $rec->postcreated;
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$item->link = $CFG->wwwroot."/mod/forum/discuss.php?d=".$rec->discussionid;
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$item->description = format_text($rec->postmessage,$rec->postformat,NULL,$forum->course);
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$items[] = $item;
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$articlesleft--;
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if ($articlesleft < 1) {
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break;
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}
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}
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}
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return $items;
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}
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//This function returns "items" record array to be used to build the rss feed
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//for a Type=posts forum
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function forum_rss_feed_posts($forum, $newsince=0) {
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global $CFG;
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$items = array();
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if ($newsince) {
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$newsince = " AND p.modified > '$newsince'";
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} else {
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$newsince = "";
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}
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if ($recs = get_records_sql ("SELECT p.id AS postid,
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d.id AS discussionid,
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d.name AS discussionname,
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u.id AS userid,
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u.firstname AS userfirstname,
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u.lastname AS userlastname,
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p.subject AS postsubject,
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p.message AS postmessage,
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p.created AS postcreated,
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p.format AS postformat
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FROM {$CFG->prefix}forum_discussions d,
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{$CFG->prefix}forum_posts p,
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{$CFG->prefix}user u
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WHERE d.forum = '$forum->id' AND
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p.discussion = d.id AND
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u.id = p.userid $newsince
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ORDER BY p.created desc")) {
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//Are we just looking for new ones? If so, then return now.
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if ($newsince) {
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return true;
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}
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//Iterate over each discussion to get forum->rssarticles records
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$articlesleft = $forum->rssarticles;
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$item = NULL;
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$user = NULL;
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foreach ($recs as $rec) {
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unset($item);
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unset($user);
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$item->category = $rec->discussionname;
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$item->title = $rec->postsubject;
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$user->firstname = $rec->userfirstname;
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$user->lastname = $rec->userlastname;
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$item->author = fullname($user);
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$item->pubdate = $rec->postcreated;
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$item->link = $CFG->wwwroot."/mod/forum/discuss.php?d=".$rec->discussionid."&parent=".$rec->postid;
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$item->description = format_text($rec->postmessage,$rec->postformat,NULL,$forum->course);
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$post_file_area_name = str_replace('//', '/', "$forum->course/$CFG->moddata/$rec->course/forum/$forum->id/$rec->postid");
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$post_files = get_directory_list("$CFG->dataroot/$post_file_area_name");
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if (!empty($post_files)) {
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$item->attachments = array();
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foreach ($post_files as $file) {
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$attachment = new stdClass;
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if ($CFG->slasharguments) {
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$attachment->url = "{$CFG->wwwroot}/file.php/$post_file_area_name/$file";
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} else {
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$attachment->url = "{$CFG->wwwroot}/file.php?file=/$post_file_area_name/$file";
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}
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$attachment->length = filesize("$CFG->dataroot/$post_file_area_name/$file");
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$item->attachments[] = $attachment;
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}
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}
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$items[] = $item;
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$articlesleft--;
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if ($articlesleft < 1) {
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break;
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}
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}
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}
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return $items;
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}
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?>
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