includes/SpecialMostlinkedcategories.php

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