includes/actions/InfoAction.php

   1 <?php
   2 /**
   3  * Display informations about a page.
   4  * Very inefficient for the moment.
   5  *
   6  * Copyright © 2011 Alexandre Emsenhuber
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  * @file
  23  * @ingroup Actions
  24  */
  25
  26 class InfoAction extends FormlessAction {
  27
  28         public function getName() {
  29                 return 'info';
  30         }
  31
  32         public function getRestriction() {
  33                 return 'read';
  34         }
  35
  36         protected function getDescription() {
  37                 return '';
  38         }
  39
  40         public function requiresWrite() {
  41                 return false;
  42         }
  43
  44         public function requiresUnblock() {
  45                 return false;
  46         }
  47
  48         protected function getPageTitle() {
  49                 return wfMsg( 'pageinfo-title', $this->getTitle()->getSubjectPage()->getPrefixedText() );
  50         }
  51
  52         public function onView() {
  53                 global $wgDisableCounters;
  54
  55                 $title = $this->getTitle()->getSubjectPage();
  56
  57                 $pageInfo = self::pageCountInfo( $title );
  58                 $talkInfo = self::pageCountInfo( $title->getTalkPage() );
  59
  60                 return Html::rawElement( 'table', array( 'class' => 'wikitable mw-page-info' ),
  61                         Html::rawElement( 'tr', array(),
  62                                 Html::element( 'th', array(), '' ) .
  63                                 Html::element( 'th', array(), wfMsg( 'pageinfo-subjectpage' ) ) .
  64                                 Html::element( 'th', array(), wfMsg( 'pageinfo-talkpage' ) )
  65                         ) .
  66                         Html::rawElement( 'tr', array(),
  67                                 Html::element( 'th', array( 'colspan' => 3 ), wfMsg( 'pageinfo-header-edits' ) )
  68                         ) .
  69                         Html::rawElement( 'tr', array(),
  70                                 Html::element( 'td', array(), wfMsg( 'pageinfo-edits' ) ) .
  71                                 Html::element( 'td', array(), $this->getLang()->formatNum( $pageInfo['edits'] ) ) .
  72                                 Html::element( 'td', array(), $this->getLang()->formatNum( $talkInfo['edits'] ) )
  73                         ) .
  74                         Html::rawElement( 'tr', array(),
  75                                 Html::element( 'td', array(), wfMsg( 'pageinfo-authors' ) ) .
  76                                 Html::element( 'td', array(), $this->getLang()->formatNum( $pageInfo['authors'] ) ) .
  77                                 Html::element( 'td', array(), $this->getLang()->formatNum( $talkInfo['authors'] ) )
  78                         ) .
  79                         ( !$this->getUser()->isAllowed( 'unwatchedpages' ) ? '' :
  80                                 Html::rawElement( 'tr', array(),
  81                                         Html::element( 'th', array( 'colspan' => 3 ), wfMsg( 'pageinfo-header-watchlist' ) )
  82                                 ) .
  83                                 Html::rawElement( 'tr', array(),
  84                                         Html::element( 'td', array(), wfMsg( 'pageinfo-watchers' ) ) .
  85                                         Html::element( 'td', array( 'colspan' => 2 ), $this->getLang()->formatNum( $pageInfo['watchers'] ) )
  86                                 )
  87                         ).
  88                         ( $wgDisableCounters ? '' :
  89                                 Html::rawElement( 'tr', array(),
  90                                         Html::element( 'th', array( 'colspan' => 3 ), wfMsg( 'pageinfo-header-views' ) )
  91                                 ) .
  92                                 Html::rawElement( 'tr', array(),
  93                                         Html::element( 'td', array(), wfMsg( 'pageinfo-views' ) ) .
  94                                         Html::element( 'td', array(), $this->getLang()->formatNum( $pageInfo['views'] ) ) .
  95                                         Html::element( 'td', array(), $this->getLang()->formatNum( $talkInfo['views'] ) )
  96                                 ) .
  97                                 Html::rawElement( 'tr', array(),
  98                                         Html::element( 'td', array(), wfMsg( 'pageinfo-viewsperedit' ) ) .
  99                                         Html::element( 'td', array(), $this->getLang()->formatNum( sprintf( '%.2f', $pageInfo['edits'] ? $pageInfo['views'] / $pageInfo['edits'] : 0 ) ) ) .
 100                                         Html::element( 'td', array(), $this->getLang()->formatNum( sprintf( '%.2f', $talkInfo['edits'] ? $talkInfo['views'] / $talkInfo['edits'] : 0 ) ) )
 101                                 )
 102                         )
 103                 );
 104         }
 105
 106         /**
 107          * Return the total number of edits and number of unique editors
 108          * on a given page. If page does not exist, returns false.
 109          *
 110          * @param $title Title object
 111          * @return mixed array or boolean false
 112          */
 113         public static function pageCountInfo( $title ) {
 114                 $id = $title->getArticleId();
 115                 $dbr = wfGetDB( DB_SLAVE );
 116
 117                 $watchers = (int)$dbr->selectField(
 118                         'watchlist',
 119                         'COUNT(*)',
 120                         array(
 121                                 'wl_title'     => $title->getDBkey(),
 122                                 'wl_namespace' => $title->getNamespace()
 123                         ),
 124                         __METHOD__
 125                 );
 126
 127                 $edits = (int)$dbr->selectField(
 128                         'revision',
 129                         'COUNT(rev_page)',
 130                         array( 'rev_page' => $id ),
 131                         __METHOD__
 132                 );
 133
 134                 $authors = (int)$dbr->selectField(
 135                         'revision',
 136                         'COUNT(DISTINCT rev_user_text)',
 137                         array( 'rev_page' => $id ),
 138                         __METHOD__
 139                 );
 140
 141                 $views = (int)$dbr->selectField(
 142                         'page',
 143                         'page_counter',
 144                         array( 'page_id' => $id ),
 145                         __METHOD__
 146                 );
 147
 148                 return array( 'watchers' => $watchers, 'edits' => $edits,
 149                         'authors' => $authors, 'views' => $views );
 150         }
 151 }