mod/wiki/filter.php

   1 <?PHP // $Id$
   2     //This function provides automatic linking to
   3     //wiki pages when its page title is found inside every Moodle text
   4     //It's based in the glosssary filter by Williams Castillo
   5     //Modifications by mchurch. Enjoy! :-)
   6
   7     require_once($CFG->dirroot.'/mod/wiki/lib.php');
   8
   9     function wiki_filter($courseid, $text) {
  10
  11         global $CFG;
  12
  13         // Trivial-cache - keyed on $cachedcourseid
  14         static $nothingtodo;
  15         static $wikipagelist;
  16         static $cachedcourseid;
  17
  18         if (empty($courseid)) {
  19             $courseid = SITEID;
  20         }
  21
  22         // Initialise/invalidate our trivial cache if dealing with a different course
  23         if (!isset($cachedcourseid) || $cachedcourseid !== (int)$courseid) {
  24             $wikipagelist = array();
  25             $nothingtodo = false;
  26         }
  27         $cachedcourseid = (int)$courseid;
  28
  29         if (!empty($nothingtodo)) {   // We've been here in this page already
  30             return $text;
  31         }
  32
  33 /// Create a list of all the wikis to search for.  It may be cached already.
  34
  35         if (empty($wikipagelist)) {
  36
  37         /// Get all wikis for this course.
  38             if (!$wikis = wiki_get_course_wikis($courseid)) {
  39                 $nothingtodo = true;
  40                 return $text;
  41             }
  42
  43             $wikipagelist = array();
  44
  45         /// Walk through each wiki, and get entries.
  46             foreach ($wikis as $wiki) {
  47                 if ($wiki_entries = wiki_get_entries($wiki)) {
  48
  49                 /// Walk through each entry and get the pages.
  50                     foreach ($wiki_entries as $wiki_entry) {
  51                         if ($wiki_pages = get_records('wiki_pages', 'wiki', $wiki_entry->id, 'pagename, version DESC')) {
  52                         /// Walk through each page and filter.
  53                             $wikientries = array();
  54                             foreach ($wiki_pages as $wiki_page) {
  55                                 if (!in_array($wiki_page->pagename, $wikientries)) {
  56                                     $startlink = '<a class="wiki autolink" title="Wiki" href="'
  57                                             .$CFG->wwwroot.'/mod/wiki/view.php?wid='.$wiki->id
  58                                             .'&amp;userid='.$wiki_entry->userid
  59                                             .'&amp;groupid='.$wiki_entry->groupid
  60                                             .'&amp;page='.$wiki_page->pagename.'">';
  61                                     $wikipagelist[] = new filterobject($wiki_page->pagename, $startlink, '</a>', false, true);
  62                                     $wikientries[] = $wiki_page->pagename;
  63                                 }
  64                             }
  65                         }
  66                     }
  67                 }
  68             }
  69         }
  70
  71         return filter_phrases($text, $wikipagelist);
  72     }
  73
  74 ?>