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\IResultWrapper;
  29 use Wikimedia\Rdbms\IDatabase;
  30
  31 /**
  32  * A special page to show pages ordered by the number of pages linking to them.
  33  *
  34  * @ingroup SpecialPage
  35  */
  36 class MostlinkedPage extends QueryPage {
  37         function __construct( $name = 'Mostlinked' ) {
  38                 parent::__construct( $name );
  39         }
  40
  41         public function isExpensive() {
  42                 return true;
  43         }
  44
  45         function isSyndicated() {
  46                 return false;
  47         }
  48
  49         public function getQueryInfo() {
  50                 return [
  51                         'tables' => [ 'pagelinks', 'page' ],
  52                         'fields' => [
  53                                 'namespace' => 'pl_namespace',
  54                                 'title' => 'pl_title',
  55                                 'value' => 'COUNT(*)',
  56                                 'page_namespace'
  57                         ],
  58                         'options' => [
  59                                 'HAVING' => 'COUNT(*) > 1',
  60                                 'GROUP BY' => [
  61                                         'pl_namespace', 'pl_title',
  62                                         'page_namespace'
  63                                 ]
  64                         ],
  65                         'join_conds' => [
  66                                 'page' => [
  67                                         'LEFT JOIN',
  68                                         [
  69                                                 'page_namespace = pl_namespace',
  70                                                 'page_title = pl_title'
  71                                         ]
  72                                 ]
  73                         ]
  74                 ];
  75         }
  76
  77         /**
  78          * Pre-fill the link cache
  79          *
  80          * @param IDatabase $db
  81          * @param IResultWrapper $res
  82          */
  83         function preprocessResults( $db, $res ) {
  84                 $this->executeLBFromResultWrapper( $res );
  85         }
  86
  87         /**
  88          * Make a link to "what links here" for the specified title
  89          *
  90          * @param Title $title Title being queried
  91          * @param string $caption Text to display on the link
  92          * @return string
  93          */
  94         function makeWlhLink( $title, $caption ) {
  95                 $wlh = SpecialPage::getTitleFor( 'Whatlinkshere', $title->getPrefixedDBkey() );
  96
  97                 $linkRenderer = $this->getLinkRenderer();
  98                 return $linkRenderer->makeKnownLink( $wlh, $caption );
  99         }
 100
 101         /**
 102          * Make links to the page corresponding to the item,
 103          * and the "what links here" page for it
 104          *
 105          * @param Skin $skin Skin to be used
 106          * @param object $result Result row
 107          * @return string
 108          */
 109         function formatResult( $skin, $result ) {
 110                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
 111                 if ( !$title ) {
 112                         return Html::element(
 113                                 'span',
 114                                 [ 'class' => 'mw-invalidtitle' ],
 115                                 Linker::getInvalidTitleDescription(
 116                                         $this->getContext(),
 117                                         $result->namespace,
 118                                         $result->title )
 119                         );
 120                 }
 121
 122                 $linkRenderer = $this->getLinkRenderer();
 123                 $link = $linkRenderer->makeLink( $title );
 124                 $wlh = $this->makeWlhLink(
 125                         $title,
 126                         $this->msg( 'nlinks' )->numParams( $result->value )->text()
 127                 );
 128
 129                 return $this->getLanguage()->specialList( $link, $wlh );
 130         }
 131
 132         protected function getGroupName() {
 133                 return 'highuse';
 134         }
 135 }