includes/specials/SpecialMostlinked.php

   1 <?php
   2 /**
   3  * Implements Special:Mostlinked
   4  *
   5  * Copyright © 2005 Ævar Arnfjörð Bjarmason, 2006 Rob Church
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  * @author Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  25  * @author Rob Church <robchur@gmail.com>
  26  */
  27
  28 use Wikimedia\Rdbms\ResultWrapper;
  29
  30 /**
  31  * A special page to show pages ordered by the number of pages linking to them.
  32  *
  33  * @ingroup SpecialPage
  34  */
  35 class MostlinkedPage extends QueryPage {
  36         function __construct( $name = 'Mostlinked' ) {
  37                 parent::__construct( $name );
  38         }
  39
  40         public function isExpensive() {
  41                 return true;
  42         }
  43
  44         function isSyndicated() {
  45                 return false;
  46         }
  47
  48         public function getQueryInfo() {
  49                 return [
  50                         'tables' => [ 'pagelinks', 'page' ],
  51                         'fields' => [
  52                                 'namespace' => 'pl_namespace',
  53                                 'title' => 'pl_title',
  54                                 'value' => 'COUNT(*)',
  55                                 'page_namespace'
  56                         ],
  57                         'options' => [
  58                                 'HAVING' => 'COUNT(*) > 1',
  59                                 'GROUP BY' => [
  60                                         'pl_namespace', 'pl_title',
  61                                         'page_namespace'
  62                                 ]
  63                         ],
  64                         'join_conds' => [
  65                                 'page' => [
  66                                         'LEFT JOIN',
  67                                         [
  68                                                 'page_namespace = pl_namespace',
  69                                                 'page_title = pl_title'
  70                                         ]
  71                                 ]
  72                         ]
  73                 ];
  74         }
  75
  76         /**
  77          * Pre-fill the link cache
  78          *
  79          * @param IDatabase $db
  80          * @param ResultWrapper $res
  81          */
  82         function preprocessResults( $db, $res ) {
  83                 $this->executeLBFromResultWrapper( $res );
  84         }
  85
  86         /**
  87          * Make a link to "what links here" for the specified title
  88          *
  89          * @param Title $title Title being queried
  90          * @param string $caption Text to display on the link
  91          * @return string
  92          */
  93         function makeWlhLink( $title, $caption ) {
  94                 $wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedDBkey() );
  95
  96                 $linkRenderer = $this->getLinkRenderer();
  97                 return $linkRenderer->makeKnownLink( $wlh, $caption );
  98         }
  99
 100         /**
 101          * Make links to the page corresponding to the item,
 102          * and the "what links here" page for it
 103          *
 104          * @param Skin $skin Skin to be used
 105          * @param object $result Result row
 106          * @return string
 107          */
 108         function formatResult( $skin, $result ) {
 109                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
 110                 if ( !$title ) {
 111                         return Html::element(
 112                                 'span',
 113                                 [ 'class' => 'mw-invalidtitle' ],
 114                                 Linker::getInvalidTitleDescription(
 115                                         $this->getContext(),
 116                                         $result->namespace,
 117                                         $result->title )
 118                         );
 119                 }
 120
 121                 $linkRenderer = $this->getLinkRenderer();
 122                 $link = $linkRenderer->makeLink( $title );
 123                 $wlh = $this->makeWlhLink(
 124                         $title,
 125                         $this->msg( 'nlinks' )->numParams( $result->value )->text()
 126                 );
 127
 128                 return $this->getLanguage()->specialList( $link, $wlh );
 129         }
 130
 131         protected function getGroupName() {
 132                 return 'highuse';
 133         }
 134 }