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                 $dbw = wfGetDB( DB_MASTER );
 253                 $dbw->startAtomic( __METHOD__ );
 254
 255                 Hooks::run( 'TitleMoveStarting', [ $this->oldTitle, $this->newTitle, $user ] );
 256
 257                 $pageid = $this->oldTitle->getArticleID( Title::GAID_FOR_UPDATE );
 258                 $protected = $this->oldTitle->isProtected();
 259
 260                 // Do the actual move; if this fails, it will throw an MWException(!)
 261                 $nullRevision = $this->moveToInternal( $user, $this->newTitle, $reason, $createRedirect,
 262                         $changeTags );
 263
 264                 // Refresh the sortkey for this row.  Be careful to avoid resetting
 265                 // cl_timestamp, which may disturb time-based lists on some sites.
 266                 // @todo This block should be killed, it's duplicating code
 267                 // from LinksUpdate::getCategoryInsertions() and friends.
 268                 $prefixes = $dbw->select(
 269                         'categorylinks',
 270                         [ 'cl_sortkey_prefix', 'cl_to' ],
 271                         [ 'cl_from' => $pageid ],
 272                         __METHOD__
 273                 );
 274                 $type = MWNamespace::getCategoryLinkType( $this->newTitle->getNamespace() );
 275                 foreach ( $prefixes as $prefixRow ) {
 276                         $prefix = $prefixRow->cl_sortkey_prefix;
 277                         $catTo = $prefixRow->cl_to;
 278                         $dbw->update( 'categorylinks',
 279                                 [
 280                                         'cl_sortkey' => Collation::singleton()->getSortKey(
 281                                                         $this->newTitle->getCategorySortkey( $prefix ) ),
 282                                         'cl_collation' => $wgCategoryCollation,
 283                                         'cl_type' => $type,
 284                                         'cl_timestamp=cl_timestamp' ],
 285                                 [
 286                                         'cl_from' => $pageid,
 287                                         'cl_to' => $catTo ],
 288                                 __METHOD__
 289                         );
 290                 }
 291
 292                 $redirid = $this->oldTitle->getArticleID();
 293
 294                 if ( $protected ) {
 295                         # Protect the redirect title as the title used to be...
 296                         $res = $dbw->select(
 297                                 'page_restrictions',
 298                                 [ 'pr_type', 'pr_level', 'pr_cascade', 'pr_user', 'pr_expiry' ],
 299                                 [ 'pr_page' => $pageid ],
 300                                 __METHOD__,
 301                                 'FOR UPDATE'
 302                         );
 303                         $rowsInsert = [];
 304                         foreach ( $res as $row ) {
 305                                 $rowsInsert[] = [
 306                                         'pr_page' => $redirid,
 307                                         'pr_type' => $row->pr_type,
 308                                         'pr_level' => $row->pr_level,
 309                                         'pr_cascade' => $row->pr_cascade,
 310                                         'pr_user' => $row->pr_user,
 311                                         'pr_expiry' => $row->pr_expiry
 312                                 ];
 313                         }
 314                         $dbw->insert( 'page_restrictions', $rowsInsert, __METHOD__, [ 'IGNORE' ] );
 315
 316                         // Build comment for log
 317                         $comment = wfMessage(
 318                                 'prot_1movedto2',
 319                                 $this->oldTitle->getPrefixedText(),
 320                                 $this->newTitle->getPrefixedText()
 321                         )->inContentLanguage()->text();
 322                         if ( $reason ) {
 323                                 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 324                         }
 325
 326                         // reread inserted pr_ids for log relation
 327                         $insertedPrIds = $dbw->select(
 328                                 'page_restrictions',
 329                                 'pr_id',
 330                                 [ 'pr_page' => $redirid ],
 331                                 __METHOD__
 332                         );
 333                         $logRelationsValues = [];
 334                         foreach ( $insertedPrIds as $prid ) {
 335                                 $logRelationsValues[] = $prid->pr_id;
 336                         }
 337
 338                         // Update the protection log
 339                         $logEntry = new ManualLogEntry( 'protect', 'move_prot' );
 340                         $logEntry->setTarget( $this->newTitle );
 341                         $logEntry->setComment( $comment );
 342                         $logEntry->setPerformer( $user );
 343                         $logEntry->setParameters( [
 344                                 '4::oldtitle' => $this->oldTitle->getPrefixedText(),
 345                         ] );
 346                         $logEntry->setRelations( [ 'pr_id' => $logRelationsValues ] );
 347                         $logEntry->setTags( $changeTags );
 348                         $logId = $logEntry->insert();
 349                         $logEntry->publish( $logId );
 350                 }
 351
 352                 // Update *_from_namespace fields as needed
 353                 if ( $this->oldTitle->getNamespace() != $this->newTitle->getNamespace() ) {
 354                         $dbw->update( 'pagelinks',
 355                                 [ 'pl_from_namespace' => $this->newTitle->getNamespace() ],
 356                                 [ 'pl_from' => $pageid ],
 357                                 __METHOD__
 358                         );
 359                         $dbw->update( 'templatelinks',
 360                                 [ 'tl_from_namespace' => $this->newTitle->getNamespace() ],
 361                                 [ 'tl_from' => $pageid ],
 362                                 __METHOD__
 363                         );
 364                         $dbw->update( 'imagelinks',
 365                                 [ 'il_from_namespace' => $this->newTitle->getNamespace() ],
 366                                 [ 'il_from' => $pageid ],
 367                                 __METHOD__
 368                         );
 369                 }
 370
 371                 # Update watchlists
 372                 $oldtitle = $this->oldTitle->getDBkey();
 373                 $newtitle = $this->newTitle->getDBkey();
 374                 $oldsnamespace = MWNamespace::getSubject( $this->oldTitle->getNamespace() );
 375                 $newsnamespace = MWNamespace::getSubject( $this->newTitle->getNamespace() );
 376                 if ( $oldsnamespace != $newsnamespace || $oldtitle != $newtitle ) {
 377                         $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 378                         $store->duplicateAllAssociatedEntries( $this->oldTitle, $this->newTitle );
 379                 }
 380
 381                 // If it is a file then move it last.
 382                 // This is done after all database changes so that file system errors cancel the transaction.
 383                 if ( $this->oldTitle->getNamespace() == NS_FILE ) {
 384                         $status = $this->moveFile( $this->oldTitle, $this->newTitle );
 385                         if ( !$status->isOK() ) {
 386                                 $dbw->cancelAtomic( __METHOD__ );
 387                                 return $status;
 388                         }
 389                 }
 390
 391                 Hooks::run(
 392                         'TitleMoveCompleting',
 393                         [ $this->oldTitle, $this->newTitle,
 394                                 $user, $pageid, $redirid, $reason, $nullRevision ]
 395                 );
 396
 397                 $dbw->endAtomic( __METHOD__ );
 398
 399                 $params = [
 400                         &$this->oldTitle,
 401                         &$this->newTitle,
 402                         &$user,
 403                         $pageid,
 404                         $redirid,
 405                         $reason,
 406                         $nullRevision
 407                 ];
 408                 // Keep each single hook handler atomic
 409                 DeferredUpdates::addUpdate(
 410                         new AtomicSectionUpdate(
 411                                 $dbw,
 412                                 __METHOD__,
 413                                 // Hold onto $user to avoid HHVM bug where it no longer
 414                                 // becomes a reference (T118683)
 415                                 function () use ( $params, &$user ) {
 416                                         Hooks::run( 'TitleMoveComplete', $params );
 417                                 }
 418                         )
 419                 );
 420
 421                 return Status::newGood();
 422         }
 423
 424         /**
 425          * Move a file associated with a page to a new location.
 426          * Can also be used to revert after a DB failure.
 427          *
 428          * @access private
 429          * @param Title Old location to move the file from.
 430          * @param Title New location to move the file to.
 431          * @return Status
 432          */
 433         private function moveFile( $oldTitle, $newTitle ) {
 434                 $status = Status::newFatal(
 435                         'cannotdelete',
 436                         $oldTitle->getPrefixedText()
 437                 );
 438
 439                 $file = wfLocalFile( $oldTitle );
 440                 $file->load( File::READ_LATEST );
 441                 if ( $file->exists() ) {
 442                         $status = $file->move( $newTitle );
 443                 }
 444
 445                 // Clear RepoGroup process cache
 446                 RepoGroup::singleton()->clearCache( $oldTitle );
 447                 RepoGroup::singleton()->clearCache( $newTitle ); # clear false negative cache
 448                 return $status;
 449         }
 450
 451         /**
 452          * Move page to a title which is either a redirect to the
 453          * source page or nonexistent
 454          *
 455          * @todo This was basically directly moved from Title, it should be split into
 456          *   smaller functions
 457          * @param User $user the User doing the move
 458          * @param Title $nt The page to move to, which should be a redirect or non-existent
 459          * @param string $reason The reason for the move
 460          * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
 461          *   if the user has the suppressredirect right
 462          * @param string[] $changeTags Change tags to apply to the entry in the move log
 463          * @return Revision the revision created by the move
 464          * @throws MWException
 465          */
 466         private function moveToInternal( User $user, &$nt, $reason = '', $createRedirect = true,
 467                 array $changeTags = []
 468         ) {
 469                 if ( $nt->exists() ) {
 470                         $moveOverRedirect = true;
 471                         $logType = 'move_redir';
 472                 } else {
 473                         $moveOverRedirect = false;
 474                         $logType = 'move';
 475                 }
 476
 477                 if ( $moveOverRedirect ) {
 478                         $overwriteMessage = wfMessage(
 479                                         'delete_and_move_reason',
 480                                         $this->oldTitle->getPrefixedText()
 481                                 )->inContentLanguage()->text();
 482                         $newpage = WikiPage::factory( $nt );
 483                         $errs = [];
 484                         $status = $newpage->doDeleteArticleReal(
 485                                 $overwriteMessage,
 486                                 /* $suppress */ false,
 487                                 $nt->getArticleID(),
 488                                 /* $commit */ false,
 489                                 $errs,
 490                                 $user,
 491                                 $changeTags,
 492                                 'delete_redir'
 493                         );
 494
 495                         if ( !$status->isGood() ) {
 496                                 throw new MWException( 'Failed to delete page-move revision: ' . $status );
 497                         }
 498
 499                         $nt->resetArticleID( false );
 500                 }
 501
 502                 if ( $createRedirect ) {
 503                         if ( $this->oldTitle->getNamespace() == NS_CATEGORY
 504                                 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
 505                         ) {
 506                                 $redirectContent = new WikitextContent(
 507                                         wfMessage( 'category-move-redirect-override' )
 508                                                 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
 509                         } else {
 510                                 $contentHandler = ContentHandler::getForTitle( $this->oldTitle );
 511                                 $redirectContent = $contentHandler->makeRedirectContent( $nt,
 512                                         wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
 513                         }
 514
 515                         // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
 516                 } else {
 517                         $redirectContent = null;
 518                 }
 519
 520                 // Figure out whether the content model is no longer the default
 521                 $oldDefault = ContentHandler::getDefaultModelFor( $this->oldTitle );
 522                 $contentModel = $this->oldTitle->getContentModel();
 523                 $newDefault = ContentHandler::getDefaultModelFor( $nt );
 524                 $defaultContentModelChanging = ( $oldDefault !== $newDefault
 525                         && $oldDefault === $contentModel );
 526
 527                 // T59084: log_page should be the ID of the *moved* page
 528                 $oldid = $this->oldTitle->getArticleID();
 529                 $logTitle = clone $this->oldTitle;
 530
 531                 $logEntry = new ManualLogEntry( 'move', $logType );
 532                 $logEntry->setPerformer( $user );
 533                 $logEntry->setTarget( $logTitle );
 534                 $logEntry->setComment( $reason );
 535                 $logEntry->setParameters( [
 536                         '4::target' => $nt->getPrefixedText(),
 537                         '5::noredir' => $redirectContent ? '0' : '1',
 538                 ] );
 539
 540                 $formatter = LogFormatter::newFromEntry( $logEntry );
 541                 $formatter->setContext( RequestContext::newExtraneousContext( $this->oldTitle ) );
 542                 $comment = $formatter->getPlainActionText();
 543                 if ( $reason ) {
 544                         $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
 545                 }
 546
 547                 $dbw = wfGetDB( DB_MASTER );
 548
 549                 $oldpage = WikiPage::factory( $this->oldTitle );
 550                 $oldcountable = $oldpage->isCountable();
 551
 552                 $newpage = WikiPage::factory( $nt );
 553
 554                 # Change the name of the target page:
 555                 $dbw->update( 'page',
 556                         /* SET */ [
 557                                 'page_namespace' => $nt->getNamespace(),
 558                                 'page_title' => $nt->getDBkey(),
 559                         ],
 560                         /* WHERE */ [ 'page_id' => $oldid ],
 561                         __METHOD__
 562                 );
 563
 564                 # Save a null revision in the page's history notifying of the move
 565                 $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true, $user );
 566                 if ( !is_object( $nullRevision ) ) {
 567                         throw new MWException( 'Failed to create null revision while moving page ID '
 568                                 . $oldid . ' to ' . $nt->getPrefixedDBkey() );
 569                 }
 570
 571                 $nullRevId = $nullRevision->insertOn( $dbw );
 572                 $logEntry->setAssociatedRevId( $nullRevId );
 573
 574                 /**
 575                  * T163966
 576                  * Increment user_editcount during page moves
 577                  * Moved from SpecialMovepage.php per T195550
 578                  */
 579                 $user->incEditCount();
 580
 581                 if ( !$redirectContent ) {
 582                         // Clean up the old title *before* reset article id - T47348
 583                         WikiPage::onArticleDelete( $this->oldTitle );
 584                 }
 585
 586                 $this->oldTitle->resetArticleID( 0 ); // 0 == non existing
 587                 $nt->resetArticleID( $oldid );
 588                 $newpage->loadPageData( WikiPage::READ_LOCKING ); // T48397
 589
 590                 $newpage->updateRevisionOn( $dbw, $nullRevision );
 591
 592                 Hooks::run( 'NewRevisionFromEditComplete',
 593                         [ $newpage, $nullRevision, $nullRevision->getParentId(), $user ] );
 594
 595                 $newpage->doEditUpdates( $nullRevision, $user,
 596                         [ 'changed' => false, 'moved' => true, 'oldcountable' => $oldcountable ] );
 597
 598                 // If the default content model changes, we need to populate rev_content_model
 599                 if ( $defaultContentModelChanging ) {
 600                         $dbw->update(
 601                                 'revision',
 602                                 [ 'rev_content_model' => $contentModel ],
 603                                 [ 'rev_page' => $nt->getArticleID(), 'rev_content_model IS NULL' ],
 604                                 __METHOD__
 605                         );
 606                 }
 607
 608                 WikiPage::onArticleCreate( $nt );
 609
 610                 # Recreate the redirect, this time in the other direction.
 611                 if ( $redirectContent ) {
 612                         $redirectArticle = WikiPage::factory( $this->oldTitle );
 613                         $redirectArticle->loadFromRow( false, WikiPage::READ_LOCKING ); // T48397
 614                         $newid = $redirectArticle->insertOn( $dbw );
 615                         if ( $newid ) { // sanity
 616                                 $this->oldTitle->resetArticleID( $newid );
 617                                 $redirectRevision = new Revision( [
 618                                         'title' => $this->oldTitle, // for determining the default content model
 619                                         'page' => $newid,
 620                                         'user_text' => $user->getName(),
 621                                         'user' => $user->getId(),
 622                                         'comment' => $comment,
 623                                         'content' => $redirectContent ] );
 624                                 $redirectRevId = $redirectRevision->insertOn( $dbw );
 625                                 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
 626
 627                                 Hooks::run( 'NewRevisionFromEditComplete',
 628                                         [ $redirectArticle, $redirectRevision, false, $user ] );
 629
 630                                 $redirectArticle->doEditUpdates( $redirectRevision, $user, [ 'created' => true ] );
 631
 632                                 // make a copy because of log entry below
 633                                 $redirectTags = $changeTags;
 634                                 if ( in_array( 'mw-new-redirect', ChangeTags::getSoftwareTags() ) ) {
 635                                         $redirectTags[] = 'mw-new-redirect';
 636                                 }
 637                                 ChangeTags::addTags( $redirectTags, null, $redirectRevId, null );
 638                         }
 639                 }
 640
 641                 # Log the move
 642                 $logid = $logEntry->insert();
 643
 644                 $logEntry->setTags( $changeTags );
 645                 $logEntry->publish( $logid );
 646
 647                 return $nullRevision;
 648         }
 649 }