includes/SpecialWantedcategories.php

   1 <?php
   2 /**
   3  * A querypage to list the most wanted categories - implements Special:Wantedcategories
   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 WantedCategoriesPage extends QueryPage {
  12
  13         function getName() { return 'Wantedcategories'; }
  14         function isExpensive() { return true; }
  15         function isSyndicated() { return false; }
  16
  17         function getSQL() {
  18                 $dbr = wfGetDB( DB_SLAVE );
  19                 list( $categorylinks, $page ) = $dbr->tableNamesN( 'categorylinks', 'page' );
  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                         LEFT JOIN $page ON cl_to = page_title AND page_namespace = ". NS_CATEGORY ."
  30                         WHERE page_title IS NULL
  31                         GROUP BY 1,2,3
  32                         ";
  33         }
  34
  35         function sortDescending() { return true; }
  36
  37         /**
  38          * Fetch user page links and cache their existence
  39          */
  40         function preprocessResults( &$db, &$res ) {
  41                 $batch = new LinkBatch;
  42                 while ( $row = $db->fetchObject( $res ) )
  43                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  44                 $batch->execute();
  45
  46                 // Back to start for display
  47                 if ( $db->numRows( $res ) > 0 )
  48                         // If there are no rows we get an error seeking.
  49                         $db->dataSeek( $res, 0 );
  50         }
  51
  52         function formatResult( $skin, $result ) {
  53                 global $wgLang, $wgContLang;
  54
  55                 $nt = Title::makeTitle( $result->namespace, $result->title );
  56                 $text = $wgContLang->convert( $nt->getText() );
  57
  58                 $plink = $this->isCached() ?
  59                         $skin->makeLinkObj( $nt, htmlspecialchars( $text ) ) :
  60                         $skin->makeBrokenLinkObj( $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 wfSpecialWantedCategories() {
  72         list( $limit, $offset ) = wfCheckLimits();
  73
  74         $wpp = new WantedCategoriesPage();
  75
  76         $wpp->doQuery( $offset, $limit );
  77 }
  78
  79