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 class MostlinkedCategoriesPage extends QueryPage {
  12
  13         function getName() { return 'Mostlinkedcategories'; }
  14         function isExpensive() { return true; }
  15         function isSyndicated() { return false; }
  16
  17         function getSQL() {
  18                 $dbr = wfGetDB( DB_SLAVE );
  19                 $categorylinks = $dbr->tableName( 'categorylinks' );
  20                 $name = $dbr->addQuotes( $this->getName() );
  21                 return
  22                         "
  23                         SELECT
  24                                 $name as type,
  25                                 " . NS_CATEGORY . " as namespace,
  26                                 cl_to as title,
  27                                 COUNT(*) as value
  28                         FROM $categorylinks
  29                         GROUP BY 1,2,3
  30                         ";
  31         }
  32
  33         function sortDescending() { return true; }
  34
  35         /**
  36          * Fetch user page links and cache their existence
  37          */
  38         function preprocessResults( &$db, &$res ) {
  39                 $batch = new LinkBatch;
  40                 while ( $row = $db->fetchObject( $res ) )
  41                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  42                 $batch->execute();
  43
  44                 // Back to start for display
  45                 if ( $db->numRows( $res ) > 0 )
  46                         // If there are no rows we get an error seeking.
  47                         $db->dataSeek( $res, 0 );
  48         }
  49
  50         function formatResult( $skin, $result ) {
  51                 global $wgLang, $wgContLang;
  52
  53                 $nt = Title::makeTitle( $result->namespace, $result->title );
  54                 $text = $wgContLang->convert( $nt->getText() );
  55
  56                 $plink = $skin->makeLinkObj( $nt, htmlspecialchars( $text ) );
  57
  58                 $nlinks = wfMsgExt( 'nmembers', array( 'parsemag', 'escape'),
  59                         $wgLang->formatNum( $result->value ) );
  60                 return wfSpecialList($plink, $nlinks);
  61         }
  62 }
  63
  64 /**
  65  * constructor
  66  */
  67 function wfSpecialMostlinkedCategories() {
  68         list( $limit, $offset ) = wfCheckLimits();
  69
  70         $wpp = new MostlinkedCategoriesPage();
  71
  72         $wpp->doQuery( $offset, $limit );
  73 }
  74
  75