e27944217b
This reverts bug 23293, because with tagfilter, I see no UNIQ things. By the way, the fix for bug 23293 was not the best, because it modify for two pages the query and for the third only the display part. This also realign the ChangeTags::modifyDisplayQuery calls and fix the way, SpecialNewImages gets 'ts_tags' into the select Change-Id: I09cfa5697561970399622920214a569e9a712080
279 lines
8.4 KiB
PHP
279 lines
8.4 KiB
PHP
<?php
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/**
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* Implements Special:Recentchangeslinked
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup SpecialPage
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*/
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/**
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* This is to display changes made to all articles linked in an article.
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*
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* @ingroup SpecialPage
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*/
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class SpecialRecentchangeslinked extends SpecialRecentChanges {
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var $rclTargetTitle;
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function __construct(){
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parent::__construct( 'Recentchangeslinked' );
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}
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public function getDefaultOptions() {
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$opts = parent::getDefaultOptions();
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$opts->add( 'target', '' );
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$opts->add( 'showlinkedto', false );
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$opts->add( 'tagfilter', '' );
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return $opts;
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}
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public function parseParameters( $par, FormOptions $opts ) {
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$opts['target'] = $par;
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}
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public function feedSetup() {
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$opts = parent::feedSetup();
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$opts['target'] = $this->getRequest()->getVal( 'target' );
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return $opts;
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}
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public function getFeedObject( $feedFormat ){
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$feed = new ChangesFeed( $feedFormat, false );
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$feedObj = $feed->getFeedObject(
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$this->msg( 'recentchangeslinked-title', $this->getTargetTitle()->getPrefixedText() )
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->inContentLanguage()->text(),
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$this->msg( 'recentchangeslinked-feed' )->inContentLanguage()->text(),
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$this->getTitle()->getFullUrl()
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);
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return array( $feed, $feedObj );
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}
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public function doMainQuery( $conds, $opts ) {
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$target = $opts['target'];
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$showlinkedto = $opts['showlinkedto'];
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$limit = $opts['limit'];
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if ( $target === '' ) {
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return false;
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}
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$outputPage = $this->getOutput();
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$title = Title::newFromURL( $target );
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if( !$title || $title->getInterwiki() != '' ){
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$outputPage->wrapWikiMsg( "<div class=\"errorbox\">\n$1\n</div><br style=\"clear: both\" />", 'allpagesbadtitle' );
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return false;
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}
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$outputPage->setPageTitle( $this->msg( 'recentchangeslinked-title', $title->getPrefixedText() ) );
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/*
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* Ordinary links are in the pagelinks table, while transclusions are
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* in the templatelinks table, categorizations in categorylinks and
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* image use in imagelinks. We need to somehow combine all these.
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* Special:Whatlinkshere does this by firing multiple queries and
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* merging the results, but the code we inherit from our parent class
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* expects only one result set so we use UNION instead.
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*/
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$dbr = wfGetDB( DB_SLAVE, 'recentchangeslinked' );
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$id = $title->getArticleID();
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$ns = $title->getNamespace();
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$dbkey = $title->getDBkey();
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$tables = array( 'recentchanges' );
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$select = array( $dbr->tableName( 'recentchanges' ) . '.*' );
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$join_conds = array();
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$query_options = array();
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// left join with watchlist table to highlight watched rows
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$uid = $this->getUser()->getId();
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if( $uid ) {
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$tables[] = 'watchlist';
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$select[] = 'wl_user';
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$join_conds['watchlist'] = array( 'LEFT JOIN', "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace" );
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}
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if ( $this->getUser()->isAllowed( 'rollback' ) ) {
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$tables[] = 'page';
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$join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
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$select[] = 'page_latest';
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}
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ChangeTags::modifyDisplayQuery(
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$tables,
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$select,
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$conds,
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$join_conds,
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$query_options,
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$opts['tagfilter']
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);
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if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$select ) ) ) {
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return false;
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}
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if( $ns == NS_CATEGORY && !$showlinkedto ) {
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// special handling for categories
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// XXX: should try to make this less klugy
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$link_tables = array( 'categorylinks' );
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$showlinkedto = true;
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} else {
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// for now, always join on these tables; really should be configurable as in whatlinkshere
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$link_tables = array( 'pagelinks', 'templatelinks' );
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// imagelinks only contains links to pages in NS_FILE
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if( $ns == NS_FILE || !$showlinkedto ) {
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$link_tables[] = 'imagelinks';
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}
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}
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if( $id == 0 && !$showlinkedto ) {
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return false; // nonexistent pages can't link to any pages
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}
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// field name prefixes for all the various tables we might want to join with
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$prefix = array( 'pagelinks' => 'pl', 'templatelinks' => 'tl', 'categorylinks' => 'cl', 'imagelinks' => 'il' );
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$subsql = array(); // SELECT statements to combine with UNION
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foreach( $link_tables as $link_table ) {
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$pfx = $prefix[$link_table];
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// imagelinks and categorylinks tables have no xx_namespace field, and have xx_to instead of xx_title
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if( $link_table == 'imagelinks' ) {
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$link_ns = NS_FILE;
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} elseif( $link_table == 'categorylinks' ) {
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$link_ns = NS_CATEGORY;
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} else {
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$link_ns = 0;
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}
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if( $showlinkedto ) {
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// find changes to pages linking to this page
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if( $link_ns ) {
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if( $ns != $link_ns ) {
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continue;
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} // should never happen, but check anyway
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$subconds = array( "{$pfx}_to" => $dbkey );
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} else {
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$subconds = array( "{$pfx}_namespace" => $ns, "{$pfx}_title" => $dbkey );
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}
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$subjoin = "rc_cur_id = {$pfx}_from";
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} else {
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// find changes to pages linked from this page
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$subconds = array( "{$pfx}_from" => $id );
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if( $link_table == 'imagelinks' || $link_table == 'categorylinks' ) {
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$subconds["rc_namespace"] = $link_ns;
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$subjoin = "rc_title = {$pfx}_to";
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} else {
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$subjoin = "rc_namespace = {$pfx}_namespace AND rc_title = {$pfx}_title";
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}
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}
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if( $dbr->unionSupportsOrderAndLimit()) {
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$order = array( 'ORDER BY' => 'rc_timestamp DESC' );
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} else {
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$order = array();
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}
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$query = $dbr->selectSQLText(
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array_merge( $tables, array( $link_table ) ),
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$select,
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$conds + $subconds,
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__METHOD__,
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$order + $query_options,
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$join_conds + array( $link_table => array( 'INNER JOIN', $subjoin ) )
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);
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if( $dbr->unionSupportsOrderAndLimit())
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$query = $dbr->limitResult( $query, $limit );
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$subsql[] = $query;
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}
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if( count($subsql) == 0 ) {
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return false; // should never happen
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}
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if( count($subsql) == 1 && $dbr->unionSupportsOrderAndLimit() ) {
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$sql = $subsql[0];
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} else {
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// need to resort and relimit after union
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$sql = $dbr->unionQueries($subsql, false).' ORDER BY rc_timestamp DESC';
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$sql = $dbr->limitResult($sql, $limit, false);
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}
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$res = $dbr->query( $sql, __METHOD__ );
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if( $res->numRows() == 0 ) {
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$this->mResultEmpty = true;
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}
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return $res;
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}
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/**
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* @param $opts FormOptions
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* @return array
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*/
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function getExtraOptions( $opts ){
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$opts->consumeValues( array( 'showlinkedto', 'target', 'tagfilter' ) );
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$extraOpts = array();
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$extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
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$extraOpts['target'] = array( $this->msg( 'recentchangeslinked-page' )->escaped(),
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Xml::input( 'target', 40, str_replace('_',' ',$opts['target']) ) .
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Xml::check( 'showlinkedto', $opts['showlinkedto'], array('id' => 'showlinkedto') ) . ' ' .
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Xml::label( $this->msg( 'recentchangeslinked-to' )->text(), 'showlinkedto' ) );
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$tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
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if ($tagFilter) {
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$extraOpts['tagfilter'] = $tagFilter;
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}
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return $extraOpts;
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}
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/**
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* @return Title
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*/
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function getTargetTitle() {
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if ( $this->rclTargetTitle === null ) {
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$opts = $this->getOptions();
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if ( isset( $opts['target'] ) && $opts['target'] !== '' ) {
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$this->rclTargetTitle = Title::newFromText( $opts['target'] );
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} else {
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$this->rclTargetTitle = false;
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}
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}
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return $this->rclTargetTitle;
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}
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function setTopText( FormOptions $opts ) {
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$target = $this->getTargetTitle();
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if( $target ) {
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$this->getOutput()->addBacklinkSubtitle( $target );
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}
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}
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public function getFeedQuery() {
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$target = $this->getTargetTitle();
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if( $target ) {
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return "target=" . urlencode( $target->getPrefixedDBkey() );
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} else {
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return false;
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}
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}
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function setBottomText( FormOptions $opts ) {
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if( isset( $this->mResultEmpty ) && $this->mResultEmpty ) {
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$this->getOutput()->addWikiMsg( 'recentchangeslinked-noresult' );
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}
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}
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}
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