includes/SpecialWantedcategories.php

   1 <?php
   2 /**
   3  * A querypage to list the most wanted categories
   4  *
   5  * @package MediaWiki
   6  * @subpackage SpecialPage
   7  *
   8  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
   9  * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason
  10  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  11  */
  12
  13 /* */
  14 require_once 'QueryPage.php';
  15
  16 /**
  17  * @package MediaWiki
  18  * @subpackage SpecialPage
  19  */
  20 class WantedCategoriesPage extends QueryPage {
  21
  22         function getName() { return 'Wantedcategories'; }
  23         function isExpensive() { return true; }
  24         function isSyndicated() { return false; }
  25
  26         function getSQL() {
  27                 $dbr =& wfGetDB( DB_SLAVE );
  28                 extract( $dbr->tableNames( 'categorylinks', 'page' ) );
  29                 $name = $dbr->addQuotes( $this->getName() );
  30                 return
  31                         "
  32                         SELECT
  33                                 $name as type,
  34                                 " . NS_CATEGORY . " as namespace,
  35                                 cl_to as title,
  36                                 COUNT(*) as value
  37                         FROM $categorylinks
  38                         LEFT JOIN $page ON cl_to = page_title AND page_namespace = ". NS_CATEGORY ."
  39                         WHERE page_title IS NULL
  40                         GROUP BY cl_to
  41                         ";
  42         }
  43
  44         function sortDescending() { return true; }
  45
  46         /**
  47          * Fetch user page links and cache their existence
  48          */
  49         function preprocessResults( &$db, &$res ) {
  50                 global $wgLinkCache;
  51
  52                 $batch = new LinkBatch;
  53                 while ( $row = $db->fetchObject( $res ) )
  54                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  55                 $batch->execute( $wgLinkCache );
  56
  57                 // Back to start for display
  58                 if ( $db->numRows( $res ) > 0 )
  59                         // If there are no rows we get an error seeking.
  60                         $db->dataSeek( $res, 0 );
  61         }
  62
  63         function formatResult( $skin, $result ) {
  64                 global $wgContLang;
  65
  66                 $nt = Title::makeTitle( $result->namespace, $result->title );
  67                 $text = $wgContLang->convert( $nt->getText() );
  68
  69                 $plink = $this->isCached() ?
  70                         $skin->makeLinkObj( $nt, htmlspecialchars( $text ) ) :
  71                         $skin->makeBrokenLinkObj( $nt, htmlspecialchars( $text ) );
  72
  73                 $nlinks = wfMsg( 'nlinks', $result->value );
  74                 return "$plink ($nlinks)";
  75         }
  76 }
  77
  78 /**
  79  * constructor
  80  */
  81 function wfSpecialWantedCategories() {
  82         list( $limit, $offset ) = wfCheckLimits();
  83
  84         $wpp = new WantedCategoriesPage();
  85
  86         $wpp->doQuery( $offset, $limit );
  87 }
  88
  89 ?>