ORDER BY p.created ASC");
}
+/**
+ * An array of forum objects that the user is allowed to read/search through.
+ * @param $userid
+ * @param $courseid - if 0, we look for forums throughout the whole site.
+ * @return array of forum objects, or false if no matches
+ * Forum objects have the following attributes:
+ * id, type, course, cmid, cmvisible, cmgroupmode, accessallgroups,
+ * viewhiddentimedposts
+ */
+function forum_get_readable_forums($userid, $courseid=0) {
+
+ global $CFG;
+
+ if (!$forummod = get_record('modules', 'name', 'forum')) {
+ error('The forum module is not installed');
+ }
+
+ if ($courseid) {
+ $courses = get_records('course', 'id', $courseid);
+ } else {
+ $courses = get_records('course');
+ }
+ if (!$courses) {
+ return false;
+ }
+
+ $readableforums = array();
+
+ foreach($courses as $course) {
+ $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
+
+ if (has_capability('moodle/course:viewhiddenactivities', $coursecontext)) {
+ $selecthidden = ' AND cm.visible = 1';
+ } else {
+ $selecthidden = '';
+ }
+
+ $selectforums = "SELECT DISTINCT(f.id) AS id,
+ f.type AS type,
+ f.course AS course,
+ cm.id AS cmid,
+ cm.visible AS cmvisible,
+ cm.groupmode AS cmgroupmode
+ FROM {$CFG->prefix}course_modules AS cm,
+ {$CFG->prefix}forum AS f
+ WHERE cm.instance = f.id
+ AND cm.course = {$course->id}
+ AND cm.module = {$forummod->id}
+ $selecthidden";
+
+ if ($forums = get_records_sql($selectforums)) {
+
+ $group = user_group($course->id, $userid);
+
+ foreach ($forums as $forum) {
+ $forumcontext = get_context_instance(CONTEXT_MODULE, $forum->cmid);
+
+ // Evaluate groupmode.
+ $cm = new object;
+ $cm->id = $forum->cmid;
+ $cm->groupmode = $forum->cmgroupmode;
+ $forum->cmgroupmode = groupmode($course, $cm);
+
+ if ($forum->cmgroupmode == SEPARATEGROUPS
+ && !has_capability('moodle/site:accessallgroups', $forumcontext)) {
+ $forum->accessallgroups = false;
+ $forum->accessgroup = $group->id; // The user can only access
+ // discussions for this group.
+ } else {
+ $forum->accessallgroups = true;
+ }
+
+ if (has_capability('mod/forum:viewforum', $forumcontext)
+ && has_capability('mod/forum:viewdiscussion', $forumcontext)) {
+
+ $forum->viewhiddentimedposts
+ = has_capability('mod/forum:viewhiddentimedposts', $forumcontext);
+
+ array_push($readableforums, $forum);
+ }
+ }
+ }
+ } // End foreach $courses
+
+ return $readableforums;
+}
+
/**
* Returns a list of posts found using an array of search terms.
* e.g. word +word -word
- * @param $searchterms
- * @param $courseid
+ * @param $searchterms - array of search terms, e.g. word +word -word
+ * @param $courseid - if 0, we search through the whole site
* @param $page
* @param $recordsperpage=50
* @param &$totalcount
- * @param $groupid - either a single groupid or an array of groupids.
- * this specifies the groups the search is to be carried
- * for. However, please note that, unless the user has
- * the capability 'moodle/site:accessallgroups',
- * we will restrict the search to a subset of groups from
- * $groupid. The subset consists of the groups the user
- * really is in.
* @param $extrasql
+ * @return array of posts found
+ */
+function forum_search_posts($searchterms, $courseid=0, $page=0, $recordsperpage=50,
+ &$totalcount, $extrasql='') {
+ global $CFG, $USER;
+ require_once($CFG->libdir.'/searchlib.php');
+
+ $forums = forum_get_readable_forums($USER->id, $courseid);
+
+
+ for ($i=0; $i<count($forums); $i++) {
+ if ($i == 0) {
+ $selectdiscussion = " ((d.forum = {$forums[$i]->id}";
+ } else {
+ $selectdiscussion .= " OR (d.forum = {$forums[$i]->id}";
+ }
+ if (!empty($CFG->forum_enabletimedposts) && !$forums[$i]->viewhiddentimedposts) {
+ $now = time();
+ $selectdiscussion .= " AND ( d.userid = {$USER->id}
+ OR ((d.timestart = 0 OR d.timestart <= $now)
+ AND (d.timeend = 0 OR d.timeend > $now)) )";
+ }
+ if (!$forums[$i]->accessallgroups) {
+ if (!empty($forums[$i]->accessgroup)) {
+ $selectdiscussion .= " AND (d.groupid = {$forums[$i]->accessgroup}";
+ $selectdiscussion .= ' OR d.groupid = -1)'; // -1 means open for all groups.
+ } else {
+ // User isn't in any group. Only search discussions that are
+ // open to all groups.
+ $selectdiscussion .= ' AND d.groupid = -1';
+ }
+ }
+ $selectdiscussion .= ")\n";
+ }
+ $selectdiscussion .= ")";
+
+
+ // Some differences in syntax for PostgreSQL.
+ if ($CFG->dbtype == 'postgres7') {
+ $LIKE = 'ILIKE'; // Case-insensitive
+ $NOTLIKE = 'NOT ILIKE'; // Case-insensitive
+ $REGEXP = '~*';
+ $NOTREGEXP = '!~*';
+ } else { // Note the LIKE are casesensitive for Oracle. Oracle 10g is required to use
+ $LIKE = 'LIKE'; // the caseinsensitive search using regexp_like() or NLS_COMP=LINGUISTIC :-(
+ $NOTLIKE = 'NOT LIKE'; // See http://docs.moodle.org/en/XMLDB_Problems#Case-insensitive_searches
+ $REGEXP = 'REGEXP';
+ $NOTREGEXP = 'NOT REGEXP';
+ }
+
+ $messagesearch = '';
+ $searchstring = '';
+
+ // Need to concat these back together for parser to work.
+ foreach($searchterms as $searchterm){
+ if ($searchstring != '') {
+ $searchstring .= ' ';
+ }
+ $searchstring .= $searchterm;
+ }
+
+ // We need to allow quoted strings for the search. The quotes *should* be stripped
+ // by the parser, but this should be examined carefully for security implications.
+ $searchstring = str_replace("\\\"","\"",$searchstring);
+ $parser = new search_parser();
+ $lexer = new search_lexer($parser);
+
+ if ($lexer->parse($searchstring)) {
+ $parsearray = $parser->get_parsed_array();
+ $messagesearch = search_generate_SQL($parsearray, 'p.message', 'p.subject',
+ 'p.userid', 'u.id', 'u.firstname',
+ 'u.lastname', 'p.modified', 'd.forum');
+ }
+
+ $fromsql = "{$CFG->prefix}forum_posts p,
+ {$CFG->prefix}forum_discussions d,
+ {$CFG->prefix}user u";
+
+ $selectsql = " $messagesearch
+ AND p.discussion = d.id
+ AND p.userid = u.id
+ AND $selectdiscussion
+ $extrasql";
+
+ $countsql = "SELECT COUNT(*)
+ FROM $fromsql
+ WHERE $selectsql";
+
+ $totalcount = count_records_sql($countsql);
+
+ $searchsql = "SELECT p.*,
+ d.forum,
+ u.firstname,
+ u.lastname,
+ u.email,
+ u.picture
+ FROM $fromsql
+ WHERE $selectsql
+ ORDER BY p.modified DESC";
+
+ //print_object($countsql); // Debug.
+ //print_object($searchsql);
+
+ return get_records_sql($searchsql, $page, $recordsperpage);
+}
+
+
+/**
+ *
+ * PRE-ROLES VERSION.
+ * TODO: Remove this after testing. This is left here for convenience so that
+ * we can compare with new implementation above.
+ * Note that the argument $sepgroups has been removed in the new version.
*/
- //
- //
- // TODO: This function needs to be converted to use has_capability().
- //
- //
- function forum_search_posts($searchterms, $courseid, $page=0, $recordsperpage=50, &$totalcount, $sepgroups=0, $extrasql='') {
- /// Returns a list of posts found using an array of search terms
- /// eg word +word -word
- ///
+/*
+ function forum_search_posts($searchterms, $courseid, $page=0, $recordsperpage=50,
+ &$totalcount, $sepgroups=0, $extrasql='') {
+
global $CFG, $USER;
require_once($CFG->libdir.'/searchlib.php');
return get_records_sql("SELECT p.*,d.forum, u.firstname,u.lastname,u.email,u.picture FROM
$selectsql ORDER BY p.modified DESC", $limitfrom, $limitnum);
- }
+ }*/
function forum_get_ratings($postid, $sort="u.firstname ASC") {
return $ratingsmenuused;
}
+
+
/**
* This function prints the overview of a discussion in the forum listing.
* It needs some discussion information and some post information, these
-?>
+?>
\ No newline at end of file
projects / moodle.git / commitdiff