MediaWiki  1.29.1
SpecialRecentchangeslinked.php
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1 <?php
31  protected $rclTargetTitle;
32 
33  function __construct() {
34  parent::__construct( 'Recentchangeslinked' );
35  }
36 
37  public function getDefaultOptions() {
38  $opts = parent::getDefaultOptions();
39  $opts->add( 'target', '' );
40  $opts->add( 'showlinkedto', false );
41 
42  return $opts;
43  }
44 
45  public function parseParameters( $par, FormOptions $opts ) {
46  $opts['target'] = $par;
47  }
48 
52  protected function doMainQuery( $tables, $select, $conds, $query_options,
53  $join_conds, FormOptions $opts ) {
54 
55  $target = $opts['target'];
56  $showlinkedto = $opts['showlinkedto'];
57  $limit = $opts['limit'];
58 
59  if ( $target === '' ) {
60  return false;
61  }
62  $outputPage = $this->getOutput();
63  $title = Title::newFromText( $target );
64  if ( !$title || $title->isExternal() ) {
65  $outputPage->addHTML( '<div class="errorbox">' . $this->msg( 'allpagesbadtitle' )
66  ->parse() . '</div>' );
67 
68  return false;
69  }
70 
71  $outputPage->setPageTitle( $this->msg( 'recentchangeslinked-title', $title->getPrefixedText() ) );
72 
73  /*
74  * Ordinary links are in the pagelinks table, while transclusions are
75  * in the templatelinks table, categorizations in categorylinks and
76  * image use in imagelinks. We need to somehow combine all these.
77  * Special:Whatlinkshere does this by firing multiple queries and
78  * merging the results, but the code we inherit from our parent class
79  * expects only one result set so we use UNION instead.
80  */
81 
82  $dbr = wfGetDB( DB_REPLICA, 'recentchangeslinked' );
83  $id = $title->getArticleID();
84  $ns = $title->getNamespace();
85  $dbkey = $title->getDBkey();
86 
87  $tables[] = 'recentchanges';
88  $select = array_merge( RecentChange::selectFields(), $select );
89 
90  // left join with watchlist table to highlight watched rows
91  $uid = $this->getUser()->getId();
92  if ( $uid && $this->getUser()->isAllowed( 'viewmywatchlist' ) ) {
93  $tables[] = 'watchlist';
94  $select[] = 'wl_user';
95  $join_conds['watchlist'] = [ 'LEFT JOIN', [
96  'wl_user' => $uid,
97  'wl_title=rc_title',
98  'wl_namespace=rc_namespace'
99  ] ];
100  }
101  if ( $this->getUser()->isAllowed( 'rollback' ) ) {
102  $tables[] = 'page';
103  $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
104  $select[] = 'page_latest';
105  }
107  $tables,
108  $select,
109  $conds,
110  $join_conds,
111  $query_options,
112  $opts['tagfilter']
113  );
114 
115  if ( !$this->runMainQueryHook( $tables, $select, $conds, $query_options, $join_conds,
116  $opts )
117  ) {
118  return false;
119  }
120 
121  if ( $ns == NS_CATEGORY && !$showlinkedto ) {
122  // special handling for categories
123  // XXX: should try to make this less kludgy
124  $link_tables = [ 'categorylinks' ];
125  $showlinkedto = true;
126  } else {
127  // for now, always join on these tables; really should be configurable as in whatlinkshere
128  $link_tables = [ 'pagelinks', 'templatelinks' ];
129  // imagelinks only contains links to pages in NS_FILE
130  if ( $ns == NS_FILE || !$showlinkedto ) {
131  $link_tables[] = 'imagelinks';
132  }
133  }
134 
135  if ( $id == 0 && !$showlinkedto ) {
136  return false; // nonexistent pages can't link to any pages
137  }
138 
139  // field name prefixes for all the various tables we might want to join with
140  $prefix = [
141  'pagelinks' => 'pl',
142  'templatelinks' => 'tl',
143  'categorylinks' => 'cl',
144  'imagelinks' => 'il'
145  ];
146 
147  $subsql = []; // SELECT statements to combine with UNION
148 
149  foreach ( $link_tables as $link_table ) {
150  $pfx = $prefix[$link_table];
151 
152  // imagelinks and categorylinks tables have no xx_namespace field,
153  // and have xx_to instead of xx_title
154  if ( $link_table == 'imagelinks' ) {
155  $link_ns = NS_FILE;
156  } elseif ( $link_table == 'categorylinks' ) {
157  $link_ns = NS_CATEGORY;
158  } else {
159  $link_ns = 0;
160  }
161 
162  if ( $showlinkedto ) {
163  // find changes to pages linking to this page
164  if ( $link_ns ) {
165  if ( $ns != $link_ns ) {
166  continue;
167  } // should never happen, but check anyway
168  $subconds = [ "{$pfx}_to" => $dbkey ];
169  } else {
170  $subconds = [ "{$pfx}_namespace" => $ns, "{$pfx}_title" => $dbkey ];
171  }
172  $subjoin = "rc_cur_id = {$pfx}_from";
173  } else {
174  // find changes to pages linked from this page
175  $subconds = [ "{$pfx}_from" => $id ];
176  if ( $link_table == 'imagelinks' || $link_table == 'categorylinks' ) {
177  $subconds["rc_namespace"] = $link_ns;
178  $subjoin = "rc_title = {$pfx}_to";
179  } else {
180  $subjoin = [ "rc_namespace = {$pfx}_namespace", "rc_title = {$pfx}_title" ];
181  }
182  }
183 
184  if ( $dbr->unionSupportsOrderAndLimit() ) {
185  $order = [ 'ORDER BY' => 'rc_timestamp DESC' ];
186  } else {
187  $order = [];
188  }
189 
190  $query = $dbr->selectSQLText(
191  array_merge( $tables, [ $link_table ] ),
192  $select,
193  $conds + $subconds,
194  __METHOD__,
195  $order + $query_options,
196  $join_conds + [ $link_table => [ 'INNER JOIN', $subjoin ] ]
197  );
198 
199  if ( $dbr->unionSupportsOrderAndLimit() ) {
200  $query = $dbr->limitResult( $query, $limit );
201  }
202 
203  $subsql[] = $query;
204  }
205 
206  if ( count( $subsql ) == 0 ) {
207  return false; // should never happen
208  }
209  if ( count( $subsql ) == 1 && $dbr->unionSupportsOrderAndLimit() ) {
210  $sql = $subsql[0];
211  } else {
212  // need to resort and relimit after union
213  $sql = $dbr->unionQueries( $subsql, false ) . ' ORDER BY rc_timestamp DESC';
214  $sql = $dbr->limitResult( $sql, $limit, false );
215  }
216 
217  $res = $dbr->query( $sql, __METHOD__ );
218 
219  if ( $res->numRows() == 0 ) {
220  $this->mResultEmpty = true;
221  }
222 
223  return $res;
224  }
225 
226  function setTopText( FormOptions $opts ) {
227  $target = $this->getTargetTitle();
228  if ( $target ) {
229  $this->getOutput()->addBacklinkSubtitle( $target );
230  $this->getSkin()->setRelevantTitle( $target );
231  }
232  }
233 
240  function getExtraOptions( $opts ) {
241  $extraOpts = parent::getExtraOptions( $opts );
242 
243  $opts->consumeValues( [ 'showlinkedto', 'target' ] );
244 
245  $extraOpts['target'] = [ $this->msg( 'recentchangeslinked-page' )->escaped(),
246  Xml::input( 'target', 40, str_replace( '_', ' ', $opts['target'] ) ) .
247  Xml::check( 'showlinkedto', $opts['showlinkedto'], [ 'id' => 'showlinkedto' ] ) . ' ' .
248  Xml::label( $this->msg( 'recentchangeslinked-to' )->text(), 'showlinkedto' ) ];
249 
250  $this->addHelpLink( 'Help:Related changes' );
251  return $extraOpts;
252  }
253 
257  function getTargetTitle() {
258  if ( $this->rclTargetTitle === null ) {
259  $opts = $this->getOptions();
260  if ( isset( $opts['target'] ) && $opts['target'] !== '' ) {
261  $this->rclTargetTitle = Title::newFromText( $opts['target'] );
262  } else {
263  $this->rclTargetTitle = false;
264  }
265  }
266 
267  return $this->rclTargetTitle;
268  }
269 
278  public function prefixSearchSubpages( $search, $limit, $offset ) {
279  return $this->prefixSearchString( $search, $limit, $offset );
280  }
281 }
SpecialRecentChangesLinked\getExtraOptions
getExtraOptions( $opts)
Get options to be displayed in a form.
Definition: SpecialRecentchangeslinked.php:240
Title\newFromText
static newFromText( $text, $defaultNamespace=NS_MAIN)
Create a new Title from text, such as what one would find in a link.
Definition: Title.php:265
SpecialRecentChangesLinked\parseParameters
parseParameters( $par, FormOptions $opts)
Process $par and put options found in $opts.
Definition: SpecialRecentchangeslinked.php:45
$tables
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist Do not use this to implement individual filters if they are compatible with the ChangesListFilter and ChangesListFilterGroup structure use sub classes of those in conjunction with the ChangesListSpecialPageStructuredFilters hook This hook can be used to implement filters that do not implement that or custom behavior that is not an individual filter e g Watchlist & $tables
Definition: hooks.txt:990
SpecialPage\getOutput
getOutput()
Get the OutputPage being used for this instance.
Definition: SpecialPage.php:675
SpecialRecentChangesLinked
This is to display changes made to all articles linked in an article.
Definition: SpecialRecentchangeslinked.php:29
Xml\label
static label( $label, $id, $attribs=[])
Convenience function to build an HTML form label.
Definition: Xml.php:358
captcha-old.count
count
Definition: captcha-old.py:225
text
design txt This is a brief overview of the new design More thorough and up to date information is available on the documentation wiki at etc Handles the details of getting and saving to the user table of the and dealing with sessions and cookies OutputPage Encapsulates the entire HTML page that will be sent in response to any server request It is used by calling its functions to add text
Definition: design.txt:12
SpecialRecentChangesLinked\getTargetTitle
getTargetTitle()
Definition: SpecialRecentchangeslinked.php:257
SpecialRecentChangesLinked\setTopText
setTopText(FormOptions $opts)
Send the text to be displayed above the options.
Definition: SpecialRecentchangeslinked.php:226
NS_FILE
const NS_FILE
Definition: Defines.php:68
SpecialPage\getSkin
getSkin()
Shortcut to get the skin being used for this instance.
Definition: SpecialPage.php:695
$res
$res
Definition: database.txt:21
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
$query
null for the wiki Added should default to null in handler for backwards compatibility add a value to it if you want to add a cookie that have to vary cache options can modify $query
Definition: hooks.txt:1572
SpecialPage\addHelpLink
addHelpLink( $to, $overrideBaseUrl=false)
Adds help link with an icon via page indicators.
Definition: SpecialPage.php:785
SpecialPage\prefixSearchString
prefixSearchString( $search, $limit, $offset)
Perform a regular substring search for prefixSearchSubpages.
Definition: SpecialPage.php:448
$title
namespace and then decline to actually register it file or subcat img or subcat $title
Definition: hooks.txt:934
ChangeTags\modifyDisplayQuery
static modifyDisplayQuery(&$tables, &$fields, &$conds, &$join_conds, &$options, $filter_tag=false)
Applies all tags-related changes to a query.
Definition: ChangeTags.php:632
wfGetDB
wfGetDB( $db, $groups=[], $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:3060
Xml\check
static check( $name, $checked=false, $attribs=[])
Convenience function to build an HTML checkbox.
Definition: Xml.php:323
$limit
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist Do not use this to implement individual filters if they are compatible with the ChangesListFilter and ChangesListFilterGroup structure use sub classes of those in conjunction with the ChangesListSpecialPageStructuredFilters hook This hook can be used to implement filters that do not implement that or custom behavior that is not an individual filter e g Watchlist and Watchlist you will want to construct new ChangesListBooleanFilter or ChangesListStringOptionsFilter objects When constructing you specify which group they belong to You can reuse existing or create your you must register them with $special registerFilterGroup removed from all revisions and log entries to which it was applied This gives extensions a chance to take it off their books as the deletion has already been partly carried out by this point or something similar the user will be unable to create the tag set and then return false from the hook function Ensure you consume the ChangeTagAfterDelete hook to carry out custom deletion actions as context called by AbstractContent::getParserOutput May be used to override the normal model specific rendering of page content as context as context the output can only depend on parameters provided to this hook not on global state indicating whether full HTML should be generated If generation of HTML may be but other information should still be present in the ParserOutput object to manipulate or replace but no entry for that model exists in $wgContentHandlers please use GetContentModels hook to make them known to core if desired whether it is OK to use $contentModel on $title Handler functions that modify $ok should generally return false to prevent further hooks from further modifying $ok inclusive $limit
Definition: hooks.txt:1049
SpecialPage\getUser
getUser()
Shortcut to get the User executing this instance.
Definition: SpecialPage.php:685
DB_REPLICA
const DB_REPLICA
Definition: defines.php:25
NS_CATEGORY
const NS_CATEGORY
Definition: Defines.php:76
SpecialRecentChangesLinked\prefixSearchSubpages
prefixSearchSubpages( $search, $limit, $offset)
Return an array of subpages beginning with $search that this special page will accept.
Definition: SpecialRecentchangeslinked.php:278
SpecialPage\msg
msg()
Wrapper around wfMessage that sets the current context.
Definition: SpecialPage.php:746
SpecialRecentChanges\runMainQueryHook
runMainQueryHook(&$tables, &$fields, &$conds, &$query_options, &$join_conds, $opts)
Definition: SpecialRecentchanges.php:301
SpecialRecentChangesLinked\__construct
__construct()
Definition: SpecialRecentchangeslinked.php:33
SpecialRecentChangesLinked\doMainQuery
doMainQuery( $tables, $select, $conds, $query_options, $join_conds, FormOptions $opts)
Process the query.Array of tables; see IDatabase::select $table Array of fields; see IDatabase::selec...
Definition: SpecialRecentchangeslinked.php:52
SpecialRecentChanges
A special page that lists last changes made to the wiki.
Definition: SpecialRecentchanges.php:33
Title
Represents a title within MediaWiki.
Definition: Title.php:39
SpecialRecentChangesLinked\getDefaultOptions
getDefaultOptions()
Get a FormOptions object containing the default options.
Definition: SpecialRecentchangeslinked.php:37
RecentChange\selectFields
static selectFields()
Return the list of recentchanges fields that should be selected to create a new recentchanges object.
Definition: RecentChange.php:204
$dbr
if(! $regexes) $dbr
Definition: cleanup.php:94
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:9
Xml\input
static input( $name, $size=false, $value=false, $attribs=[])
Convenience function to build an HTML text input field.
Definition: Xml.php:274
FormOptions
Helper class to keep track of options when mixing links and form elements.
Definition: FormOptions.php:35
SpecialRecentChangesLinked\$rclTargetTitle
bool Title $rclTargetTitle
Definition: SpecialRecentchangeslinked.php:31
ChangesListSpecialPage\getOptions
getOptions()
Get the current FormOptions for this request.
Definition: ChangesListSpecialPage.php:553