includes/specials/Disambiguations.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * @ingroup SpecialPage
   9  */
  10 class DisambiguationsPage extends PageQueryPage {
  11
  12         function getName() {
  13                 return 'Disambiguations';
  14         }
  15
  16         function isExpensive( ) { return true; }
  17         function isSyndicated() { return false; }
  18
  19
  20         function getPageHeader( ) {
  21                 return wfMsgExt( 'disambiguations-text', array( 'parse' ) );
  22         }
  23
  24         function getSQL() {
  25                 $dbr = wfGetDB( DB_SLAVE );
  26
  27                 $dMsgText = wfMsgForContent('disambiguationspage');
  28
  29                 $linkBatch = new LinkBatch;
  30
  31                 # If the text can be treated as a title, use it verbatim.
  32                 # Otherwise, pull the titles from the links table
  33                 $dp = Title::newFromText($dMsgText);
  34                 if( $dp ) {
  35                         if($dp->getNamespace() != NS_TEMPLATE) {
  36                                 # FIXME we assume the disambiguation message is a template but
  37                                 # the page can potentially be from another namespace :/
  38                                 wfDebug("Mediawiki:disambiguationspage message does not refer to a template!\n");
  39                         }
  40                         $linkBatch->addObj( $dp );
  41                 } else {
  42                                 # Get all the templates linked from the Mediawiki:Disambiguationspage
  43                                 $disPageObj = Title::makeTitleSafe( NS_MEDIAWIKI, 'disambiguationspage' );
  44                                 $res = $dbr->select(
  45                                         array('pagelinks', 'page'),
  46                                         'pl_title',
  47                                         array('page_id = pl_from', 'pl_namespace' => NS_TEMPLATE,
  48                                                 'page_namespace' => $disPageObj->getNamespace(), 'page_title' => $disPageObj->getDBkey()),
  49                                         __METHOD__ );
  50
  51                                 while ( $row = $dbr->fetchObject( $res ) ) {
  52                                         $linkBatch->addObj( Title::makeTitle( NS_TEMPLATE, $row->pl_title ));
  53                                 }
  54
  55                                 $dbr->freeResult( $res );
  56                 }
  57
  58                 $set = $linkBatch->constructSet( 'lb.tl', $dbr );
  59                 if( $set === false ) {
  60                         # We must always return a valid sql query, but this way DB will always quicly return an empty result
  61                         $set = 'FALSE';
  62                         wfDebug("Mediawiki:disambiguationspage message does not link to any templates!\n");
  63                 }
  64
  65                 list( $page, $pagelinks, $templatelinks) = $dbr->tableNamesN( 'page', 'pagelinks', 'templatelinks' );
  66
  67                 $sql = "SELECT 'Disambiguations' AS \"type\", pb.page_namespace AS namespace,"
  68                         ." pb.page_title AS title, la.pl_from AS value"
  69                         ." FROM {$templatelinks} AS lb, {$page} AS pb, {$pagelinks} AS la, {$page} AS pa"
  70                         ." WHERE $set"  # disambiguation template(s)
  71                         .' AND pa.page_id = la.pl_from'
  72                         .' AND pa.page_namespace = ' . NS_MAIN  # Limit to just articles in the main namespace
  73                         .' AND pb.page_id = lb.tl_from'
  74                         .' AND pb.page_namespace = la.pl_namespace'
  75                         .' AND pb.page_title = la.pl_title'
  76                         .' ORDER BY lb.tl_namespace, lb.tl_title';
  77
  78                 return $sql;
  79         }
  80
  81         function getOrder() {
  82                 return '';
  83         }
  84
  85         function formatResult( $skin, $result ) {
  86                 global $wgContLang;
  87                 $title = Title::newFromId( $result->value );
  88                 $dp = Title::makeTitle( $result->namespace, $result->title );
  89
  90                 $from = $skin->makeKnownLinkObj( $title, '' );
  91                 $edit = $skin->makeKnownLinkObj( $title, "(".wfMsgHtml("qbedit").")" , 'redirect=no&action=edit' );
  92                 $arr  = $wgContLang->getArrow();
  93                 $to   = $skin->makeKnownLinkObj( $dp, '' );
  94
  95                 return "$from $edit $arr $to";
  96         }
  97 }
  98
  99 /**
 100  * Constructor
 101  */
 102 function wfSpecialDisambiguations() {
 103         list( $limit, $offset ) = wfCheckLimits();
 104
 105         $sd = new DisambiguationsPage();
 106
 107         return $sd->doQuery( $offset, $limit );
 108 }