includes/SpecialDisambiguations.php

   1 <?php
   2 /**
   3  *
   4  * @addtogroup SpecialPage
   5  */
   6
   7 class DisambiguationsPage extends PageQueryPage {
   8
   9         function getName() {
  10                 return 'Disambiguations';
  11         }
  12
  13         function isExpensive( ) { return true; }
  14         function isSyndicated() { return false; }
  15
  16
  17         function getPageHeader( ) {
  18                 return wfMsgExt( 'disambiguations-text', array( 'parse' ) );
  19         }
  20
  21         function getSQL() {
  22                 $dbr = wfGetDB( DB_SLAVE );
  23
  24                 $dMsgText = wfMsgForContent('disambiguationspage');
  25
  26                 $linkBatch = new LinkBatch;
  27
  28                 # If the text can be treated as a title, use it verbatim.
  29                 # Otherwise, pull the titles from the links table
  30                 $dp = Title::newFromText($dMsgText);
  31                 if( $dp ) {
  32                         if($dp->getNamespace() != NS_TEMPLATE) {
  33                                 # FIXME we assume the disambiguation message is a template but
  34                                 # the page can potentially be from another namespace :/
  35                                 wfDebug("Mediawiki:disambiguationspage message does not refer to a template!\n");
  36                         }
  37                         $linkBatch->addObj( $dp );
  38                 } else {
  39                                 # Get all the templates linked from the Mediawiki:Disambiguationspage
  40                                 $disPageObj = Title::makeTitleSafe( NS_MEDIAWIKI, 'disambiguationspage' );
  41                                 $res = $dbr->select(
  42                                         array('pagelinks', 'page'),
  43                                         'pl_title',
  44                                         array('page_id = pl_from', 'pl_namespace' => NS_TEMPLATE,
  45                                                 'page_namespace' => $disPageObj->getNamespace(), 'page_title' => $disPageObj->getDBkey()),
  46                                         __METHOD__ );
  47
  48                                 while ( $row = $dbr->fetchObject( $res ) ) {
  49                                         $linkBatch->addObj( Title::makeTitle( NS_TEMPLATE, $row->pl_title ));
  50                                 }
  51
  52                                 $dbr->freeResult( $res );
  53                 }
  54
  55                 $set = $linkBatch->constructSet( 'lb.tl', $dbr );
  56                 if( $set === false ) {
  57                         # We must always return a valid sql query, but this way DB will always quicly return an empty result
  58                         $set = 'FALSE';
  59                         wfDebug("Mediawiki:disambiguationspage message does not link to any templates!\n");
  60                 }
  61
  62                 list( $page, $pagelinks, $templatelinks) = $dbr->tableNamesN( 'page', 'pagelinks', 'templatelinks' );
  63
  64                 $sql = "SELECT 'Disambiguations' AS \"type\", pb.page_namespace AS namespace,"
  65                         ." pb.page_title AS title, la.pl_from AS value"
  66                         ." FROM {$templatelinks} AS lb, {$page} AS pb, {$pagelinks} AS la, {$page} AS pa"
  67                         ." WHERE $set"  # disambiguation template(s)
  68                         .' AND pa.page_id = la.pl_from'
  69                         .' AND pa.page_namespace = ' . NS_MAIN  # Limit to just articles in the main namespace
  70                         .' AND pb.page_id = lb.tl_from'
  71                         .' AND pb.page_namespace = la.pl_namespace'
  72                         .' AND pb.page_title = la.pl_title'
  73                         .' ORDER BY lb.tl_namespace, lb.tl_title';
  74
  75                 return $sql;
  76         }
  77
  78         function getOrder() {
  79                 return '';
  80         }
  81
  82         function formatResult( $skin, $result ) {
  83                 global $wgContLang;
  84                 $title = Title::newFromId( $result->value );
  85                 $dp = Title::makeTitle( $result->namespace, $result->title );
  86
  87                 $from = $skin->makeKnownLinkObj( $title, '' );
  88                 $edit = $skin->makeKnownLinkObj( $title, "(".wfMsgHtml("qbedit").")" , 'redirect=no&action=edit' );
  89                 $arr  = $wgContLang->getArrow();
  90                 $to   = $skin->makeKnownLinkObj( $dp, '' );
  91
  92                 return "$from $edit $arr $to";
  93         }
  94 }
  95
  96 /**
  97  * Constructor
  98  */
  99 function wfSpecialDisambiguations() {
 100         list( $limit, $offset ) = wfCheckLimits();
 101
 102         $sd = new DisambiguationsPage();
 103
 104         return $sd->doQuery( $offset, $limit );
 105 }
 106