includes/SpecialWantedcategories.php

   1 <?php
   2 /**
   3  * A querypage to list the most wanted categories
   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 WantedCategoriesPage extends QueryPage {
  16
  17         function getName() { return 'Wantedcategories'; }
  18         function isExpensive() { return true; }
  19         function isSyndicated() { return false; }
  20
  21         function getSQL() {
  22                 $dbr =& wfGetDB( DB_SLAVE );
  23                 list( $categorylinks, $page ) = $dbr->tableNamesN( 'categorylinks', 'page' );
  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                         LEFT JOIN $page ON cl_to = page_title AND page_namespace = ". NS_CATEGORY ."
  34                         WHERE page_title IS NULL
  35                         GROUP BY 1,2,3
  36                         ";
  37         }
  38
  39         function sortDescending() { return true; }
  40
  41         /**
  42          * Fetch user page links and cache their existence
  43          */
  44         function preprocessResults( &$db, &$res ) {
  45                 $batch = new LinkBatch;
  46                 while ( $row = $db->fetchObject( $res ) )
  47                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  48                 $batch->execute();
  49
  50                 // Back to start for display
  51                 if ( $db->numRows( $res ) > 0 )
  52                         // If there are no rows we get an error seeking.
  53                         $db->dataSeek( $res, 0 );
  54         }
  55
  56         function formatResult( $skin, $result ) {
  57                 global $wgLang, $wgContLang;
  58
  59                 $nt = Title::makeTitle( $result->namespace, $result->title );
  60                 $text = $wgContLang->convert( $nt->getText() );
  61
  62                 $plink = $this->isCached() ?
  63                         $skin->makeLinkObj( $nt, htmlspecialchars( $text ) ) :
  64                         $skin->makeBrokenLinkObj( $nt, htmlspecialchars( $text ) );
  65
  66                 $nlinks = wfMsgExt( 'nmembers', array( 'parsemag', 'escape'),
  67                         $wgLang->formatNum( $result->value ) );
  68                 return wfSpecialList($plink, $nlinks);
  69         }
  70 }
  71
  72 /**
  73  * constructor
  74  */
  75 function wfSpecialWantedCategories() {
  76         list( $limit, $offset ) = wfCheckLimits();
  77
  78         $wpp = new WantedCategoriesPage();
  79
  80         $wpp->doQuery( $offset, $limit );
  81 }
  82
  83 ?>