/**
* Generate any blog RSS feed via one function
*
* @param stdClass $context The context of the blog for which the feed it being generated
* @param array $args An array of arguements needed to build the feed (contextid, token, componentname, type, id, tagid)
*/
function blog_rss_get_feed($context, $args)
{
global $CFG, $SITE, $DB;
if (empty($CFG->bloglevel)) {
debugging('Blogging disabled on this site, RSS feeds are not available');
return null;
}
if (empty($CFG->enablerssfeeds)) {
debugging('Sorry, RSS feeds are disabled on this site');
return '';
}
if ($CFG->bloglevel == BLOG_SITE_LEVEL) {
if (isguestuser()) {
debugging(get_string('nopermissiontoshow', 'error'));
return '';
}
}
$sitecontext = get_context_instance(CONTEXT_SYSTEM);
if (!has_capability('moodle/blog:view', $sitecontext)) {
return null;
}
$type = clean_param($args[3], PARAM_ALPHA);
$id = clean_param($args[4], PARAM_INT);
// could be groupid / courseid / userid depending on $type
$tagid = 0;
if ($args[5] != 'rss.xml') {
$tagid = clean_param($args[5], PARAM_INT);
} else {
$tagid = 0;
}
$filename = blog_rss_file_name($type, $id, $tagid);
if (file_exists($filename)) {
if (filemtime($filename) + 3600 > time()) {
return $filename;
// It's already done so we return cached version
}
}
$courseid = $groupid = $userid = null;
switch ($type) {
case 'site':
//$siteid = $id;
break;
case 'course':
$courseid = $id;
break;
case 'group':
$groupid = $id;
break;
case 'user':
$userid = $id;
break;
}
// Get all the entries from the database
require_once $CFG->dirroot . '/blog/locallib.php';
$blogheaders = blog_get_headers($courseid, $groupid, $userid, $tagid);
$bloglisting = new blog_listing($blogheaders['filters']);
$blogentries = $bloglisting->get_entries();
// Now generate an array of RSS items
if ($blogentries) {
$items = array();
foreach ($blogentries as $blog_entry) {
$item = NULL;
$item->author = fullname($DB->get_record('user', array('id' => $blog_entry->userid)));
// TODO: this is slow
$item->title = $blog_entry->subject;
$item->pubdate = $blog_entry->lastmodified;
$item->link = $CFG->wwwroot . '/blog/index.php?entryid=' . $blog_entry->id;
$summary = file_rewrite_pluginfile_urls($blog_entry->summary, 'pluginfile.php', $sitecontext->id, 'blog', 'post', $blog_entry->id);
$item->description = format_text($summary, $blog_entry->format);
if (!empty($CFG->usetags) && ($blogtags = tag_get_tags_array('post', $blog_entry->id))) {
if ($blogtags) {
$item->tags = $blogtags;
}
$item->tagscheme = $CFG->wwwroot . '/tag';
}
$items[] = $item;
}
$articles = rss_add_items($items);
/// Change structure to XML
} else {
$articles = '';
}
/// Get header and footer information
switch ($type) {
case 'user':
$info = fullname($DB->get_record('user', array('id' => $id), 'firstname,lastname'));
break;
case 'course':
$info = $DB->get_field('course', 'fullname', array('id' => $id));
$info = format_string($info, true, array('context' => get_context_instance(CONTEXT_COURSE, $id)));
break;
case 'site':
$info = format_string($SITE->fullname, true, array('context' => get_context_instance(CONTEXT_COURSE, SITEID)));
break;
case 'group':
$group = groups_get_group($id);
$info = $group->name;
//TODO: $DB->get_field('groups', 'name', array('id'=>$id))
break;
default:
$info = '';
break;
}
if ($tagid) {
$info .= ': ' . $DB->get_field('tags', 'text', array('id' => $tagid));
}
$header = rss_standard_header(get_string($type . 'blog', 'blog', $info), $CFG->wwwroot . '/blog/index.php', get_string('intro', 'blog'));
$footer = rss_standard_footer();
// Save the XML contents to file.
$rssdata = $header . $articles . $footer;
if (blog_rss_save_file($type, $id, $tagid, $rssdata)) {
return $filename;
} else {
return false;
// Couldn't find it or make it
}
}
function blog_generate_rss_feed($type, $id, $tagid = 0)
{
global $CFG, $SITE;
if (empty($CFG->enablerssfeeds)) {
debugging('Sorry, RSS feeds are disabled on this site');
return '';
}
$filename = blog_rss_file_name($type, $id, $tagid);
if (file_exists($filename)) {
if (filemtime($filename) + 3600 > time()) {
return $filename;
/// It's already done so we return cached version
}
}
/// Get all the posts from the database
$blogposts = blog_fetch_entries('', 20, '', $type, $id, $tagid);
/// Now generate an array of RSS items
if ($blogposts) {
$items = array();
foreach ($blogposts as $blogpost) {
$item = NULL;
$item->author = fullname(get_record('user', 'id', $blogpost->userid));
$item->title = $blogpost->subject;
$item->pubdate = $blogpost->lastmodified;
$item->link = $CFG->wwwroot . '/blog/index.php?postid=' . $blogpost->id;
$item->description = format_text($blogpost->summary, $blogpost->format);
$items[] = $item;
}
$articles = rss_add_items($items);
/// Change structure to XML
} else {
$articles = '';
}
/// Get header and footer information
switch ($type) {
case 'user':
$info = fullname(get_record('user', 'id', $id, '', '', '', '', 'firstname,lastname'));
break;
case 'course':
$info = get_field('course', 'fullname', 'id', $id);
break;
case 'site':
$info = $SITE->fullname;
break;
case 'group':
$group = groups_get_group($id, false);
$info = $group->name;
//TODO: get_field('groups', 'name', 'id', $id)
break;
default:
$info = '';
break;
}
if ($tagid) {
$info .= ': ' . get_field('tags', 'text', 'id', $tagid);
}
$header = rss_standard_header(get_string($type . 'blog', 'blog', $info), $CFG->wwwroot . '/blog/index.php', get_string('intro', 'blog'));
$footer = rss_standard_footer();
/// Save the XML contents to file.
$rssdata = $header . $articles . $footer;
if (blog_rss_save_file($type, $id, $tagid, $rssdata)) {
return $filename;
} else {
return false;
// Couldn't find it or make it
}
}
