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  * @package MediaWiki
  15  * @subpackage SpecialPage
  16  */
  17 class WantedCategoriesPage extends QueryPage {
  18
  19         function getName() { return 'Wantedcategories'; }
  20         function isExpensive() { return true; }
  21         function isSyndicated() { return false; }
  22
  23         function getSQL() {
  24                 $dbr =& wfGetDB( DB_SLAVE );
  25                 extract( $dbr->tableNames( 'categorylinks', 'page' ) );
  26                 $name = $dbr->addQuotes( $this->getName() );
  27                 return
  28                         "
  29                         SELECT
  30                                 $name as type,
  31                                 " . NS_CATEGORY . " as namespace,
  32                                 cl_to as title,
  33                                 COUNT(*) as value
  34                         FROM $categorylinks
  35                         LEFT JOIN $page ON cl_to = page_title AND page_namespace = ". NS_CATEGORY ."
  36                         WHERE page_title IS NULL
  37                         GROUP BY cl_to
  38                         ";
  39         }
  40
  41         function sortDescending() { return true; }
  42
  43         /**
  44          * Fetch user page links and cache their existence
  45          */
  46         function preprocessResults( &$db, &$res ) {
  47                 $batch = new LinkBatch;
  48                 while ( $row = $db->fetchObject( $res ) )
  49                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  50                 $batch->execute();
  51
  52                 // Back to start for display
  53                 if ( $db->numRows( $res ) > 0 )
  54                         // If there are no rows we get an error seeking.
  55                         $db->dataSeek( $res, 0 );
  56         }
  57
  58         function formatResult( $skin, $result ) {
  59                 global $wgLang, $wgContLang;
  60
  61                 $nt = Title::makeTitle( $result->namespace, $result->title );
  62                 $text = $wgContLang->convert( $nt->getText() );
  63
  64                 $plink = $this->isCached() ?
  65                         $skin->makeLinkObj( $nt, htmlspecialchars( $text ) ) :
  66                         $skin->makeBrokenLinkObj( $nt, htmlspecialchars( $text ) );
  67
  68                 $nlinks = wfMsgExt( 'nmembers', array( 'parsemag', 'escape'),
  69                         $wgLang->formatNum( $result->value ) );
  70                 return wfSpecialList($plink, $nlinks);
  71         }
  72 }
  73
  74 /**
  75  * constructor
  76  */
  77 function wfSpecialWantedCategories() {
  78         list( $limit, $offset ) = wfCheckLimits();
  79
  80         $wpp = new WantedCategoriesPage();
  81
  82         $wpp->doQuery( $offset, $limit );
  83 }
  84
  85 ?>