includes/MovePage.php

   1 <?php
   2
   3 /**
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  *
  19  * @file
  20  */
  21
  22 use MediaWiki\MediaWikiServices;
  23 use MediaWiki\Revision\SlotRecord;
  24
  25 /**
  26  * Handles the backend logic of moving a page from one title
  27  * to another.
  28  *
  29  * @since 1.24
  30  */
  31 class MovePage {
  32
  33         /**
  34          * @var Title
  35          */
  36         protected $oldTitle;
  37
  38         /**
  39          * @var Title
  40          */
  41         protected $newTitle;
  42
  43         public function __construct( Title $oldTitle, Title $newTitle ) {
  44                 $this->oldTitle = $oldTitle;
  45                 $this->newTitle = $newTitle;
  46         }
  47
  48         public function checkPermissions( User $user, $reason ) {
  49                 $status = new Status();
  50
  51                 $errors = wfMergeErrorArrays(
  52                         $this->oldTitle->getUserPermissionsErrors( 'move', $user ),
  53                         $this->oldTitle->getUserPermissionsErrors( 'edit', $user ),
  54                         $this->newTitle->getUserPermissionsErrors( 'move-target', $user ),
  55                         $this->newTitle->getUserPermissionsErrors( 'edit', $user )
  56                 );
  57
  58                 // Convert into a Status object
  59                 if ( $errors ) {
  60                         foreach ( $errors as $error ) {
  61                                 $status->fatal( ...$error );
  62                         }
  63                 }
  64
  65                 if ( EditPage::matchSummarySpamRegex( $reason ) !== false ) {
  66                         // This is kind of lame, won't display nice
  67                         $status->fatal( 'spamprotectiontext' );
  68                 }
  69
  70                 $tp = $this->newTitle->getTitleProtection();
  71                 if ( $tp !== false && !$user->isAllowed( $tp['permission'] ) ) {
  72                                 $status->fatal( 'cantmove-titleprotected' );
  73                 }
  74
  75                 Hooks::run( 'MovePageCheckPermissions',
  76                         [ $this->oldTitle, $this->newTitle, $user, $reason, $status ]
  77                 );
  78
  79                 return $status;
  80         }
  81
  82         /**
  83          * Does various sanity checks that the move is
  84          * valid. Only things based on the two titles
  85          * should be checked here.
  86          *
  87          * @return Status
  88          */
  89         public function isValidMove() {
  90                 global $wgContentHandlerUseDB;
  91                 $status = new Status();
  92
  93                 if ( $this->oldTitle->equals( $this->newTitle ) ) {
  94                         $status->fatal( 'selfmove' );
  95                 }
  96                 if ( !$this->oldTitle->isMovable() ) {
  97                         $status->fatal( 'immobile-source-namespace', $this->oldTitle->getNsText() );
  98                 }
  99                 if ( $this->newTitle->isExternal() ) {
 100                         $status->fatal( 'immobile-target-namespace-iw' );
 101                 }
 102                 if ( !$this->newTitle->isMovable() ) {
 103                         $status->fatal( 'immobile-target-namespace', $this->newTitle->getNsText() );
 104                 }
 105
 106                 $oldid = $this->oldTitle->getArticleID();
 107
 108                 if ( strlen( $this->newTitle->getDBkey() ) < 1 ) {
 109                         $status->fatal( 'articleexists' );
 110                 }
 111                 if (
 112                         ( $this->oldTitle->getDBkey() == '' ) ||
 113                         ( !$oldid ) ||
 114                         ( $this->newTitle->getDBkey() == '' )
 115                 ) {
 116                         $status->fatal( 'badarticleerror' );
 117                 }
 118
 119                 # The move is allowed only if (1) the target doesn't exist, or
 120                 # (2) the target is a redirect to the source, and has no history
 121                 # (so we can undo bad moves right after they're done).
 122                 if ( $this->newTitle->getArticleID() && !$this->isValidMoveTarget() ) {
 123                         $status->fatal( 'articleexists' );
 124                 }
 125
 126                 // Content model checks
 127                 if ( !$wgContentHandlerUseDB &&
 128                         $this->oldTitle->getContentModel() !== $this->newTitle->getContentModel() ) {
 129                         // can't move a page if that would change the page's content model
 130                         $status->fatal(
 131                                 'bad-target-model',
 132                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 133                                 ContentHandler::getLocalizedName( $this->newTitle->getContentModel() )
 134                         );
 135                 } elseif (
 136                         !ContentHandler::getForTitle( $this->oldTitle )->canBeUsedOn( $this->newTitle )
 137                 ) {
 138                         $status->fatal(
 139                                 'content-not-allowed-here',
 140                                 ContentHandler::getLocalizedName( $this->oldTitle->getContentModel() ),
 141                                 $this->newTitle->getPrefixedText(),
 142                                 SlotRecord::MAIN
 143                         );
 144                 }
 145
 146                 // Image-specific checks
 147                 if ( $this->oldTitle->inNamespace( NS_FILE ) ) {
 148                         $status->merge( $this->isValidFileMove() );
 149                 }
 150
 151                 if ( $this->newTitle->inNamespace( NS_FILE ) && !$this->oldTitle->inNamespace( NS_FILE ) ) {
 152                         $status->fatal( 'nonfile-cannot-move-to-file' );
 153                 }
 154
 155                 // Hook for extensions to say a title can't be moved for technical reasons
 156                 Hooks::run( 'MovePageIsValidMove', [ $this->oldTitle, $this->newTitle, $status ] );
 157
 158                 return $status;
 159         }
 160
 161         /**
 162          * Sanity checks for when a file is being moved
 163          *
 164          * @return Status
 165          */
 166         protected function isValidFileMove() {
 167                 $status = new Status();
 168                 $file = wfLocalFile( $this->oldTitle );
 169                 $file->load( File::READ_LATEST );
 170                 if ( $file->exists() ) {
 171                         if ( $this->newTitle->getText() != wfStripIllegalFilenameChars( $this->newTitle->getText() ) ) {
 172                                 $status->fatal( 'imageinvalidfilename' );
 173                         }
 174                         if ( !File::checkExtensionCompatibility( $file, $this->newTitle->getDBkey() ) ) {
 175                                 $status->fatal( 'imagetypemismatch' );
 176                         }
 177                 }
 178
 179                 if ( !$this->newTitle->inNamespace( NS_FILE ) ) {
 180                         $status->fatal( 'imagenocrossnamespace' );
 181                 }
 182
 183                 return $status;
 184         }
 185
 186         /**
 187          * Checks if $this can be moved to a given Title
 188          * - Selects for update, so don't call it unless you mean business
 189          *
 190          * @since 1.25
 191          * @return bool
 192          */
 193         protected function isValidMoveTarget() {
 194                 # Is it an existing file?
 195                 if ( $this->newTitle->inNamespace( NS_FILE ) ) {
 196                         $file = wfLocalFile( $this->newTitle );
 197                         $file->load( File::READ_LATEST );
 198                         if ( $file->exists() ) {
 199                                 wfDebug( __METHOD__ . ": file exists\n" );
 200                                 return false;
 201                         }
 202                 }
 203                 # Is it a redirect with no history?
 204                 if ( !$this->newTitle->isSingleRevRedirect() ) {
 205                         wfDebug( __METHOD__ . ": not a one-rev redirect\n" );
 206                         return false;
 207                 }
 208                 # Get the article text
 209                 $rev = Revision::newFromTitle( $this->newTitle, false, Revision::READ_LATEST );
 210                 if ( !is_object( $rev ) ) {
 211                         return false;
 212                 }
 213                 $content = $rev->getContent();
 214                 # Does the redirect point to the source?
 215                 # Or is it a broken self-redirect, usually caused by namespace collisions?
 216                 $redirTitle = $content ? $content->getRedirectTarget() : null;
 217
 218                 if ( $redirTitle ) {
 219                         if ( $redirTitle->getPrefixedDBkey() !== $this->oldTitle->getPrefixedDBkey() &&
 220                                 $redirTitle->getPrefixedDBkey() !== $this->newTitle->getPrefixedDBkey() ) {
 221                                 wfDebug( __METHOD__ . ": redirect points to other page\n" );
 222                                 return false;
 223                         } else {
 224                                 return true;
 225                         }
 226                 } else {
 227                         # Fail safe (not a redirect after all. strange.)
 228                         wfDebug( __METHOD__ . ": failsafe: database says " . $this->newTitle->getPrefixedDBkey() .
 229                                 " is a redirect, but it doesn't contain a valid redirect.\n" );
 230                         return false;
 231                 }
 232         }
 233
 234         /**
 235          * @param User $user
 236          * @param string $reason
 237          * @param bool $createRedirect
 238          * @param string[] $changeTags Change tags to apply to the entry in the move log. Caller
 239          *  should perform permission checks with ChangeTags::canAddTagsAccompanyingChange
 240          * @return Status
 241          */
 242         public function move( User $user, $reason, $createRedirect, array $changeTags = [] ) {
 243                 global $wgCategoryCollation;
 244
 245                 $status = Status::newGood();
 246                 Hooks::run( 'TitleMove', [ $this->oldTitle, $this->newTitle, $user, $reason, &$status ] );
 247                 if ( !$status->isOK() ) {
 248                         // Move was aborted by the hook
 249                         return $status;
 250                 }
 251
 252                 // If it is a file, move it first.
 253                 // It is done before all other moving stuff is done because it's hard to revert.
 254                 $dbw = wfGetDB( DB_MASTER );
 255                 if ( $this->oldTitle->getNamespace() == NS_FILE ) {
 256                         $file = wfLocalFile( $this->oldTitle );
 257                         $file->load( File::READ_LATEST );
 258                         if ( $file->exists() ) {
 259                                 $status = $file->move( $this->newTitle );
 260                                 if ( !$status->isOK() ) {
 261                                         return $status;
 262                                 }
 263                         }
 264                         // Clear RepoGroup process cache
 265                         RepoGroup::singleton()->clearCache( $this->oldTitle );
 266                         RepoGroup::singleton()->clearCache( $this->newTitle ); # clear false negative cache
 267                 }
 268
 269                 $dbw->startAtomic( __METHOD__ );
 270
 271                 Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
 272
 273                 $pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
 274                 $protected = $this->oldTitle->isProtected();
 275
 276                 // Do the actual move; if this fails, it will throw an MWException(!)
 277                 $nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect,
 278                         $changeTags );
 279
 280                 // Refresh the sortkey for this row.  Be careful to avoid resetting
 281                 // cl_timestamp, which may disturb time-based lists on some sites.
 282                 // @todo This block should be killed, it's duplicating code
 283                 // from LinksUpdate::getCategoryInsertions() and friends.
 284                 $prefixes = $dbw->select(
 285                         'categorylinks',
 286                         [ 'cl_sortkey_prefix', 'cl_to' ],
 287                         [ 'cl_from' => $pageid ],
 288                         __METHOD__
 289                 );
 290                 $type = MWNamespace::getCategoryLinkType( $this->newTitle->getNamespace() );
 291                 foreach ( $prefixes as $prefixRow ) {
 292                         $prefix = $prefixRow->cl_sortkey_prefix;
 293                         $catTo = $prefixRow->cl_to;
 294                         $dbw->update( 'categorylinks',
 295                                 [
 296                                         'cl_sortkey' => Collation::singleton()->getSortKey(
 297                                                         $this->newTitle->getCategorySortkey( $prefix ) ),
 298                                         'cl_collation' => $wgCategoryCollation,
 299                                         'cl_type' => $type,
 300                                         'cl_timestamp=cl_timestamp' ],
 301                                 [
 302                                         'cl_from' => $pageid,
 303                                         'cl_to' => $catTo ],
 304                                 __METHOD__
 305                         );
 306                 }
 307
 308                 $redirid = $this->oldTitle->getArticleID();
 309
 310                 if ( $protected ) {
 311                         # Protect the redirect title as the title used to be...
 312                         $res = $dbw->select(
 313                                 'page_restrictions',
 314                                 [ 'pr_type', 'pr_level', 'pr_cascade', 'pr_user', 'pr_expiry' ],
 315                                 [ 'pr_page' => $pageid ],
 316                                 __METHOD__,
 317                                 'FOR UPDATE'
 318                         );
 319                         $rowsInsert = [];
 320                         foreach ( $res as $row ) {
 321                                 $rowsInsert[] = [
 322                                         'pr_page' => $redirid,
 323                                         'pr_type' => $row->pr_type,
 324                                         'pr_level' => $row->pr_level,
 325                                         'pr_cascade' => $row->pr_cascade,
 326                                         'pr_user' => $row->pr_user,
 327                                         'pr_expiry' => $row->pr_expiry
 328                                 ];
 329                         }
 330                         $dbw->insert( 'page_restrictions', $rowsInsert, __METHOD__, [ 'IGNORE' ] );
 331
 332                         // Build comment for log
 333                         $comment = wfMessage(
 334                                 'prot_1movedto2',
 335                                 $this->oldTitle->getPrefixedText(),
 336                                 $this->newTitle->getPrefixedText()
 337                         )->inContentLanguage()->text();
 338                         if ( $reason ) {
 339                                 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 340                         }
 341
 342                         // reread inserted pr_ids for log relation
 343                         $insertedPrIds = $dbw->select(
 344                                 'page_restrictions',
 345                                 'pr_id',
 346                                 [ 'pr_page' => $redirid ],
 347                                 __METHOD__
 348                         );
 349                         $logRelationsValues = [];
 350                         foreach ( $insertedPrIds as $prid ) {
 351                                 $logRelationsValues[] = $prid->pr_id;
 352                         }
 353
 354                         // Update the protection log
 355                         $logEntry = new ManualLogEntry( 'protect', 'move_prot' );
 356                         $logEntry->setTarget( $this->newTitle );
 357                         $logEntry->setComment( $comment );
 358                         $logEntry->setPerformer( $user );
 359                         $logEntry->setParameters( [
 360                                 '4::oldtitle' => $this->oldTitle->getPrefixedText(),
 361                         ] );
 362                         $logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
 363                         $logEntry->setTags( $changeTags );
 364                         $logId = $logEntry->insert();
 365                         $logEntry->publish( $logId );
 366                 }
 367
 368                 // Update *_from_namespace fields as needed
 369                 if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
 370                         $dbw->update( 'pagelinks',
 371                                 [ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
 372                                 [ 'pl_from' => $pageid ],
 373                                 __METHOD__
 374                         );
 375                         $dbw->update( 'templatelinks',
 376                                 [ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
 377                                 [ 'tl_from' => $pageid ],
 378                                 __METHOD__
 379                         );
 380                         $dbw->update( 'imagelinks',
 381                                 [ 'il_from_namespace' => $this->newTitle->getNamespace() ],
 382                                 [ 'il_from' => $pageid ],
 383                                 __METHOD__
 384                         );
 385                 }
 386
 387                 # Update watchlists
 388                 $oldtitle = $this->oldTitle->getDBkey();
 389                 $newtitle = $this->newTitle->getDBkey();
 390                 $oldsnamespace = MWNamespace::getSubject( $this->oldTitle->getNamespace() );
 391                 $newsnamespace = MWNamespace::getSubject( $this->newTitle->getNamespace() );
 392                 if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
 393                         $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 394                         $store->duplicateAllAssociatedEntries( $this->oldTitle, $this->newTitle );
 395                 }
 396
 397                 Hooks::run(
 398                         'TitleMoveCompleting',
 399                         [ $this->oldTitle, $this->newTitle,
 400                                 $user, $pageid, $redirid, $reason, $nullRevision ]
 401                 );
 402
 403                 $dbw->endAtomic( __METHOD__ );
 404
 405                 $params = [
 406                         &$this->oldTitle,
 407                         &$this->newTitle,
 408                         &$user,
 409                         $pageid,
 410                         $redirid,
 411                         $reason,
 412                         $nullRevision
 413                 ];
 414                 // Keep each single hook handler atomic
 415                 DeferredUpdates::addUpdate(
 416                         new AtomicSectionUpdate(
 417                                 $dbw,
 418                                 __METHOD__,
 419                                 // Hold onto $user to avoid HHVM bug where it no longer
 420                                 // becomes a reference (T118683)
 421                                 function () use ( $params, &$user ) {
 422                                         Hooks::run( 'TitleMoveComplete', $params );
 423                                 }
 424                         )
 425                 );
 426
 427                 return Status::newGood();
 428         }
 429
 430         /**
 431          * Move page to a title which is either a redirect to the
 432          * source page or nonexistent
 433          *
 434          * @todo This was basically directly moved from Title, it should be split into
 435          *   smaller functions
 436          * @param User $user the User doing the move
 437          * @param Title $nt The page to move to, which should be a redirect or non-existent
 438          * @param string $reason The reason for the move
 439          * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
 440          *   if the user has the suppressredirect right
 441          * @param string[] $changeTags Change tags to apply to the entry in the move log
 442          * @return Revision the revision created by the move
 443          * @throws MWException
 444          */
 445         private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true,
 446                 array $changeTags = []
 447         ) {
 448                 if ( $nt->exists() ) {
 449                         $moveOverRedirect = true;
 450                         $logType = 'move_redir';
 451                 } else {
 452                         $moveOverRedirect = false;
 453                         $logType = 'move';
 454                 }
 455
 456                 if ( $moveOverRedirect ) {
 457                         $overwriteMessage = wfMessage(
 458                                         'delete_and_move_reason',
 459                                         $this->oldTitle->getPrefixedText()
 460                                 )->inContentLanguage()->text();
 461                         $newpage = WikiPage::factory( $nt );
 462                         $errs = [];
 463                         $status = $newpage->doDeleteArticleReal(
 464                                 $overwriteMessage,
 465                                 /* $suppress */ false,
 466                                 $nt->getArticleID(),
 467                                 /* $commit */ false,
 468                                 $errs,
 469                                 $user,
 470                                 $changeTags,
 471                                 'delete_redir'
 472                         );
 473
 474                         if ( !$status->isGood() ) {
 475                                 throw new MWException( 'Failed to delete page-move revision: ' . $status );
 476                         }
 477
 478                         $nt->resetArticleID( false );
 479                 }
 480
 481                 if ( $createRedirect ) {
 482                         if ( $this->oldTitle->getNamespace() == NS_CATEGORY
 483                                 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
 484                         ) {
 485                                 $redirectContent = new WikitextContent(
 486                                         wfMessage( 'category-move-redirect-override' )
 487                                                 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
 488                         } else {
 489                                 $contentHandler = ContentHandler::getForTitle( $this->oldTitle );
 490                                 $redirectContent = $contentHandler->makeRedirectContent( $nt,
 491                                         wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
 492                         }
 493
 494                         // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
 495                 } else {
 496                         $redirectContent = null;
 497                 }
 498
 499                 // Figure out whether the content model is no longer the default
 500                 $oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
 501                 $contentModel = $this->oldTitle->getContentModel();
 502                 $newDefault = ContentHandler::getDefaultModelFor( $nt );
 503                 $defaultContentModelChanging = ( $oldDefault !== $newDefault
 504                         && $oldDefault === $contentModel );
 505
 506                 // T59084: log_page should be the ID of the *moved* page
 507                 $oldid = $this->oldTitle->getArticleID();
 508                 $logTitle = clone $this->oldTitle;
 509
 510                 $logEntry = new ManualLogEntry( 'move', $logType );
 511                 $logEntry->setPerformer( $user );
 512                 $logEntry->setTarget( $logTitle );
 513                 $logEntry->setComment( $reason );
 514                 $logEntry->setParameters( [
 515                         '4::target' => $nt->getPrefixedText(),
 516                         '5::noredir' => $redirectContent ? '0' : '1',
 517                 ] );
 518
 519                 $formatter = LogFormatter::newFromEntry( $logEntry );
 520                 $formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
 521                 $comment = $formatter->getPlainActionText();
 522                 if ( $reason ) {
 523                         $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 524                 }
 525
 526                 $dbw = wfGetDB( DB_MASTER );
 527
 528                 $oldpage = WikiPage::factory( $this->oldTitle );
 529                 $oldcountable = $oldpage->isCountable();
 530
 531                 $newpage = WikiPage::factory( $nt );
 532
 533                 # Change the name of the target page:
 534                 $dbw->update( 'page',
 535                         /* SET */ [
 536                                 'page_namespace' => $nt->getNamespace(),
 537                                 'page_title' => $nt->getDBkey(),
 538                         ],
 539                         /* WHERE */ [ 'page_id' => $oldid ],
 540                         __METHOD__
 541                 );
 542
 543                 # Save a null revision in the page's history notifying of the move
 544                 $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
 545                 if ( !is_object( $nullRevision ) ) {
 546                         throw new MWException( 'Failed to create null revision while moving page ID '
 547                                 . $oldid . ' to ' . $nt->getPrefixedDBkey() );
 548                 }
 549
 550                 $nullRevId = $nullRevision->insertOn( $dbw );
 551                 $logEntry->setAssociatedRevId( $nullRevId );
 552
 553                 /**
 554                  * T163966
 555                  * Increment user_editcount during page moves
 556                  * Moved from SpecialMovepage.php per T195550
 557                  */
 558                 $user->incEditCount();
 559
 560                 if ( !$redirectContent ) {
 561                         // Clean up the old title *before* reset article id - T47348
 562                         WikiPage::onArticleDelete( $this->oldTitle );
 563                 }
 564
 565                 $this->oldTitle->resetArticleID( 0 ); // 0 == non existing
 566                 $nt->resetArticleID( $oldid );
 567                 $newpage->loadPageData( WikiPage::READ_LOCKING ); // T48397
 568
 569                 $newpage->updateRevisionOn( $dbw, $nullRevision );
 570
 571                 Hooks::run( 'NewRevisionFromEditComplete',
 572                         [ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
 573
 574                 $newpage->doEditUpdates( $nullRevision, $user,
 575                         [ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
 576
 577                 // If the default content model changes, we need to populate rev_content_model
 578                 if ( $defaultContentModelChanging ) {
 579                         $dbw->update(
 580                                 'revision',
 581                                 [ 'rev_content_model' => $contentModel ],
 582                                 [ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
 583                                 __METHOD__
 584                         );
 585                 }
 586
 587                 WikiPage::onArticleCreate( $nt );
 588
 589                 # Recreate the redirect, this time in the other direction.
 590                 if ( $redirectContent ) {
 591                         $redirectArticle = WikiPage::factory( $this->oldTitle );
 592                         $redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // T48397
 593                         $newid = $redirectArticle->insertOn( $dbw );
 594                         if ( $newid ) { // sanity
 595                                 $this->oldTitle->resetArticleID( $newid );
 596                                 $redirectRevision = new Revision( [
 597                                         'title' => $this->oldTitle, // for determining the default content model
 598                                         'page' => $newid,
 599                                         'user_text' => $user->getName(),
 600                                         'user' => $user->getId(),
 601                                         'comment' => $comment,
 602                                         'content' => $redirectContent ] );
 603                                 $redirectRevId = $redirectRevision->insertOn( $dbw );
 604                                 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
 605
 606                                 Hooks::run( 'NewRevisionFromEditComplete',
 607                                         [ $redirectArticle, $redirectRevision, false, $user ] );
 608
 609                                 $redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
 610
 611                                 // make a copy because of log entry below
 612                                 $redirectTags = $changeTags;
 613                                 if ( in_array( 'mw-new-redirect', ChangeTags::getSoftwareTags() ) ) {
 614                                         $redirectTags[] = 'mw-new-redirect';
 615                                 }
 616                                 ChangeTags::addTags( $redirectTags, null, $redirectRevId, null );
 617                         }
 618                 }
 619
 620                 # Log the move
 621                 $logid = $logEntry->insert();
 622
 623                 $logEntry->setTags( $changeTags );
 624                 $logEntry->publish( $logid );
 625
 626                 return $nullRevision;
 627         }
 628 }