includes/api/ApiEditPage.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on August 16, 2007
   6  *
   7  * Copyright © 2007 Iker Labarga "<Firstname><Lastname>@gmail.com"
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * A module that allows for editing and creating pages.
  29  *
  30  * Currently, this wraps around the EditPage class in an ugly way,
  31  * EditPage.php should be rewritten to provide a cleaner interface
  32  * @ingroup API
  33  */
  34 class ApiEditPage extends ApiBase {
  35         public function execute() {
  36                 $user = $this->getUser();
  37                 $params = $this->extractRequestParams();
  38
  39                 if ( is_null( $params['text'] ) && is_null( $params['appendtext'] ) &&
  40                         is_null( $params['prependtext'] ) &&
  41                         $params['undo'] == 0
  42                 ) {
  43                         $this->dieUsageMsg( 'missingtext' );
  44                 }
  45
  46                 $pageObj = $this->getTitleOrPageId( $params );
  47                 $titleObj = $pageObj->getTitle();
  48                 $apiResult = $this->getResult();
  49
  50                 if ( $params['redirect'] ) {
  51                         if ( $params['prependtext'] === null && $params['appendtext'] === null && $params['section'] !== 'new' ) {
  52                                 $this->dieUsage( 'You have attempted to edit using the "redirect"-following mode, which must be used in conjuction with section=new, prependtext, or appendtext.', 'redirect-appendonly' );
  53                         }
  54                         if ( $titleObj->isRedirect() ) {
  55                                 $oldTitle = $titleObj;
  56
  57                                 $titles = Revision::newFromTitle( $oldTitle, false, Revision::READ_LATEST )
  58                                         ->getContent( Revision::FOR_THIS_USER, $user )
  59                                         ->getRedirectChain();
  60                                 // array_shift( $titles );
  61
  62                                 $redirValues = array();
  63
  64                                 /** @var $newTitle Title */
  65                                 foreach ( $titles as $id => $newTitle ) {
  66
  67                                         if ( !isset( $titles[$id - 1] ) ) {
  68                                                 $titles[$id - 1] = $oldTitle;
  69                                         }
  70
  71                                         $redirValues[] = array(
  72                                                 'from' => $titles[$id - 1]->getPrefixedText(),
  73                                                 'to' => $newTitle->getPrefixedText()
  74                                         );
  75
  76                                         $titleObj = $newTitle;
  77                                 }
  78
  79                                 $apiResult->setIndexedTagName( $redirValues, 'r' );
  80                                 $apiResult->addValue( null, 'redirects', $redirValues );
  81
  82                                 // Since the page changed, update $pageObj
  83                                 $pageObj = WikiPage::factory( $titleObj );
  84                         }
  85                 }
  86
  87                 if ( !isset( $params['contentmodel'] ) || $params['contentmodel'] == '' ) {
  88                         $contentHandler = $pageObj->getContentHandler();
  89                 } else {
  90                         $contentHandler = ContentHandler::getForModelID( $params['contentmodel'] );
  91                 }
  92
  93                 // @todo Ask handler whether direct editing is supported at all! make
  94                 // allowFlatEdit() method or some such
  95
  96                 if ( !isset( $params['contentformat'] ) || $params['contentformat'] == '' ) {
  97                         $params['contentformat'] = $contentHandler->getDefaultFormat();
  98                 }
  99
 100                 $contentFormat = $params['contentformat'];
 101
 102                 if ( !$contentHandler->isSupportedFormat( $contentFormat ) ) {
 103                         $name = $titleObj->getPrefixedDBkey();
 104                         $model = $contentHandler->getModelID();
 105
 106                         $this->dieUsage( "The requested format $contentFormat is not supported for content model " .
 107                                 " $model used by $name", 'badformat' );
 108                 }
 109
 110                 if ( $params['createonly'] && $titleObj->exists() ) {
 111                         $this->dieUsageMsg( 'createonly-exists' );
 112                 }
 113                 if ( $params['nocreate'] && !$titleObj->exists() ) {
 114                         $this->dieUsageMsg( 'nocreate-missing' );
 115                 }
 116
 117                 // Now let's check whether we're even allowed to do this
 118                 $errors = $titleObj->getUserPermissionsErrors( 'edit', $user );
 119                 if ( !$titleObj->exists() ) {
 120                         $errors = array_merge( $errors, $titleObj->getUserPermissionsErrors( 'create', $user ) );
 121                 }
 122                 if ( count( $errors ) ) {
 123                         $this->dieUsageMsg( $errors[0] );
 124                 }
 125
 126                 $toMD5 = $params['text'];
 127                 if ( !is_null( $params['appendtext'] ) || !is_null( $params['prependtext'] ) ) {
 128                         $content = $pageObj->getContent();
 129
 130                         if ( !$content ) {
 131                                 if ( $titleObj->getNamespace() == NS_MEDIAWIKI ) {
 132                                         # If this is a MediaWiki:x message, then load the messages
 133                                         # and return the message value for x.
 134                                         $text = $titleObj->getDefaultMessageText();
 135                                         if ( $text === false ) {
 136                                                 $text = '';
 137                                         }
 138
 139                                         try {
 140                                                 $content = ContentHandler::makeContent( $text, $this->getTitle() );
 141                                         } catch ( MWContentSerializationException $ex ) {
 142                                                 $this->dieUsage( $ex->getMessage(), 'parseerror' );
 143
 144                                                 return;
 145                                         }
 146                                 } else {
 147                                         # Otherwise, make a new empty content.
 148                                         $content = $contentHandler->makeEmptyContent();
 149                                 }
 150                         }
 151
 152                         // @todo Add support for appending/prepending to the Content interface
 153
 154                         if ( !( $content instanceof TextContent ) ) {
 155                                 $mode = $contentHandler->getModelID();
 156                                 $this->dieUsage( "Can't append to pages using content model $mode", 'appendnotsupported' );
 157                         }
 158
 159                         if ( !is_null( $params['section'] ) ) {
 160                                 if ( !$contentHandler->supportsSections() ) {
 161                                         $modelName = $contentHandler->getModelID();
 162                                         $this->dieUsage(
 163                                                 "Sections are not supported for this content model: $modelName.",
 164                                                 'sectionsnotsupported'
 165                                         );
 166                                 }
 167
 168                                 if ( $params['section'] == 'new' ) {
 169                                         // DWIM if they're trying to prepend/append to a new section.
 170                                         $content = null;
 171                                 } else {
 172                                         // Process the content for section edits
 173                                         $section = $params['section'];
 174                                         $content = $content->getSection( $section );
 175
 176                                         if ( !$content ) {
 177                                                 $this->dieUsage( "There is no section {$section}.", 'nosuchsection' );
 178                                         }
 179                                 }
 180                         }
 181
 182                         if ( !$content ) {
 183                                 $text = '';
 184                         } else {
 185                                 $text = $content->serialize( $contentFormat );
 186                         }
 187
 188                         $params['text'] = $params['prependtext'] . $text . $params['appendtext'];
 189                         $toMD5 = $params['prependtext'] . $params['appendtext'];
 190                 }
 191
 192                 if ( $params['undo'] > 0 ) {
 193                         if ( $params['undoafter'] > 0 ) {
 194                                 if ( $params['undo'] < $params['undoafter'] ) {
 195                                         list( $params['undo'], $params['undoafter'] ) =
 196                                                 array( $params['undoafter'], $params['undo'] );
 197                                 }
 198                                 $undoafterRev = Revision::newFromID( $params['undoafter'] );
 199                         }
 200                         $undoRev = Revision::newFromID( $params['undo'] );
 201                         if ( is_null( $undoRev ) || $undoRev->isDeleted( Revision::DELETED_TEXT ) ) {
 202                                 $this->dieUsageMsg( array( 'nosuchrevid', $params['undo'] ) );
 203                         }
 204
 205                         if ( $params['undoafter'] == 0 ) {
 206                                 $undoafterRev = $undoRev->getPrevious();
 207                         }
 208                         if ( is_null( $undoafterRev ) || $undoafterRev->isDeleted( Revision::DELETED_TEXT ) ) {
 209                                 $this->dieUsageMsg( array( 'nosuchrevid', $params['undoafter'] ) );
 210                         }
 211
 212                         if ( $undoRev->getPage() != $pageObj->getID() ) {
 213                                 $this->dieUsageMsg( array( 'revwrongpage', $undoRev->getID(),
 214                                         $titleObj->getPrefixedText() ) );
 215                         }
 216                         if ( $undoafterRev->getPage() != $pageObj->getID() ) {
 217                                 $this->dieUsageMsg( array( 'revwrongpage', $undoafterRev->getID(),
 218                                         $titleObj->getPrefixedText() ) );
 219                         }
 220
 221                         $newContent = $contentHandler->getUndoContent(
 222                                 $pageObj->getRevision(),
 223                                 $undoRev,
 224                                 $undoafterRev
 225                         );
 226
 227                         if ( !$newContent ) {
 228                                 $this->dieUsageMsg( 'undo-failure' );
 229                         }
 230
 231                         $params['text'] = $newContent->serialize( $params['contentformat'] );
 232
 233                         // If no summary was given and we only undid one rev,
 234                         // use an autosummary
 235                         if ( is_null( $params['summary'] ) &&
 236                                 $titleObj->getNextRevisionID( $undoafterRev->getID() ) == $params['undo']
 237                         ) {
 238                                 $params['summary'] = wfMessage( 'undo-summary' )
 239                                         ->params ( $params['undo'], $undoRev->getUserText() )->inContentLanguage()->text();
 240                         }
 241                 }
 242
 243                 // See if the MD5 hash checks out
 244                 if ( !is_null( $params['md5'] ) && md5( $toMD5 ) !== $params['md5'] ) {
 245                         $this->dieUsageMsg( 'hashcheckfailed' );
 246                 }
 247
 248                 // EditPage wants to parse its stuff from a WebRequest
 249                 // That interface kind of sucks, but it's workable
 250                 $requestArray = array(
 251                         'wpTextbox1' => $params['text'],
 252                         'format' => $contentFormat,
 253                         'model' => $contentHandler->getModelID(),
 254                         'wpEditToken' => $params['token'],
 255                         'wpIgnoreBlankSummary' => '',
 256                         'wpIgnoreBlankArticle' => true
 257                 );
 258
 259                 if ( !is_null( $params['summary'] ) ) {
 260                         $requestArray['wpSummary'] = $params['summary'];
 261                 }
 262
 263                 if ( !is_null( $params['sectiontitle'] ) ) {
 264                         $requestArray['wpSectionTitle'] = $params['sectiontitle'];
 265                 }
 266
 267                 // TODO: Pass along information from 'undoafter' as well
 268                 if ( $params['undo'] > 0 ) {
 269                         $requestArray['wpUndidRevision'] = $params['undo'];
 270                 }
 271
 272                 // Watch out for basetimestamp == ''
 273                 // wfTimestamp() treats it as NOW, almost certainly causing an edit conflict
 274                 if ( !is_null( $params['basetimestamp'] ) && $params['basetimestamp'] != '' ) {
 275                         $requestArray['wpEdittime'] = wfTimestamp( TS_MW, $params['basetimestamp'] );
 276                 } else {
 277                         $requestArray['wpEdittime'] = $pageObj->getTimestamp();
 278                 }
 279
 280                 if ( !is_null( $params['starttimestamp'] ) && $params['starttimestamp'] != '' ) {
 281                         $requestArray['wpStarttime'] = wfTimestamp( TS_MW, $params['starttimestamp'] );
 282                 } else {
 283                         $requestArray['wpStarttime'] = wfTimestampNow(); // Fake wpStartime
 284                 }
 285
 286                 if ( $params['minor'] || ( !$params['notminor'] && $user->getOption( 'minordefault' ) ) ) {
 287                         $requestArray['wpMinoredit'] = '';
 288                 }
 289
 290                 if ( $params['recreate'] ) {
 291                         $requestArray['wpRecreate'] = '';
 292                 }
 293
 294                 if ( !is_null( $params['section'] ) ) {
 295                         $section = $params['section'];
 296                         if ( !preg_match( '/^((T-)?\d+|new)$/', $section ) ) {
 297                                 $this->dieUsage( "The section parameter must be a valid section id or 'new'", "invalidsection" );
 298                         }
 299                         $content = $pageObj->getContent();
 300                         if ( $section !== '0' && $section != 'new' && ( !$content || !$content->getSection( $section ) ) ) {
 301                                 $this->dieUsage( "There is no section {$section}.", 'nosuchsection' );
 302                         }
 303                         $requestArray['wpSection'] = $params['section'];
 304                 } else {
 305                         $requestArray['wpSection'] = '';
 306                 }
 307
 308                 $watch = $this->getWatchlistValue( $params['watchlist'], $titleObj );
 309
 310                 // Deprecated parameters
 311                 if ( $params['watch'] ) {
 312                         $this->logFeatureUsage( 'action=edit&watch' );
 313                         $watch = true;
 314                 } elseif ( $params['unwatch'] ) {
 315                         $this->logFeatureUsage( 'action=edit&unwatch' );
 316                         $watch = false;
 317                 }
 318
 319                 if ( $watch ) {
 320                         $requestArray['wpWatchthis'] = '';
 321                 }
 322
 323                 // Pass through anything else we might have been given, to support extensions
 324                 // This is kind of a hack but it's the best we can do to make extensions work
 325                 $requestArray += $this->getRequest()->getValues();
 326
 327                 global $wgTitle, $wgRequest;
 328
 329                 $req = new DerivativeRequest( $this->getRequest(), $requestArray, true );
 330
 331                 // Some functions depend on $wgTitle == $ep->mTitle
 332                 // TODO: Make them not or check if they still do
 333                 $wgTitle = $titleObj;
 334
 335                 $articleContext = new RequestContext;
 336                 $articleContext->setRequest( $req );
 337                 $articleContext->setWikiPage( $pageObj );
 338                 $articleContext->setUser( $this->getUser() );
 339
 340                 /** @var $articleObject Article */
 341                 $articleObject = Article::newFromWikiPage( $pageObj, $articleContext );
 342
 343                 $ep = new EditPage( $articleObject );
 344
 345                 // allow editing of non-textual content.
 346                 $ep->allowNonTextContent = true;
 347
 348                 $ep->setContextTitle( $titleObj );
 349                 $ep->importFormData( $req );
 350                 $content = $ep->textbox1;
 351
 352                 // The following is needed to give the hook the full content of the
 353                 // new revision rather than just the current section. (Bug 52077)
 354                 if ( !is_null( $params['section'] ) &&
 355                         $contentHandler->supportsSections() && $titleObj->exists()
 356                 ) {
 357                         // If sectiontitle is set, use it, otherwise use the summary as the section title (for
 358                         // backwards compatibility with old forms/bots).
 359                         if ( $ep->sectiontitle !== '' ) {
 360                                 $sectionTitle = $ep->sectiontitle;
 361                         } else {
 362                                 $sectionTitle = $ep->summary;
 363                         }
 364
 365                         $contentObj = $contentHandler->unserializeContent( $content, $contentFormat );
 366
 367                         $fullContentObj = $articleObject->replaceSectionContent(
 368                                 $params['section'],
 369                                 $contentObj,
 370                                 $sectionTitle
 371                         );
 372                         if ( $fullContentObj ) {
 373                                 $content = $fullContentObj->serialize( $contentFormat );
 374                         } else {
 375                                 // This most likely means we have an edit conflict which means that the edit
 376                                 // wont succeed anyway.
 377                                 $this->dieUsageMsg( 'editconflict' );
 378                         }
 379                 }
 380
 381                 // Run hooks
 382                 // Handle APIEditBeforeSave parameters
 383                 $r = array();
 384                 if ( !wfRunHooks( 'APIEditBeforeSave', array( $ep, $content, &$r ) ) ) {
 385                         if ( count( $r ) ) {
 386                                 $r['result'] = 'Failure';
 387                                 $apiResult->addValue( null, $this->getModuleName(), $r );
 388
 389                                 return;
 390                         }
 391
 392                         $this->dieUsageMsg( 'hookaborted' );
 393                 }
 394
 395                 // Do the actual save
 396                 $oldRevId = $articleObject->getRevIdFetched();
 397                 $result = null;
 398                 // Fake $wgRequest for some hooks inside EditPage
 399                 // @todo FIXME: This interface SUCKS
 400                 $oldRequest = $wgRequest;
 401                 $wgRequest = $req;
 402
 403                 $status = $ep->internalAttemptSave( $result, $user->isAllowed( 'bot' ) && $params['bot'] );
 404                 $wgRequest = $oldRequest;
 405
 406                 switch ( $status->value ) {
 407                         case EditPage::AS_HOOK_ERROR:
 408                         case EditPage::AS_HOOK_ERROR_EXPECTED:
 409                                 $this->dieUsageMsg( 'hookaborted' );
 410
 411                         case EditPage::AS_PARSE_ERROR:
 412                                 $this->dieUsage( $status->getMessage(), 'parseerror' );
 413
 414                         case EditPage::AS_IMAGE_REDIRECT_ANON:
 415                                 $this->dieUsageMsg( 'noimageredirect-anon' );
 416
 417                         case EditPage::AS_IMAGE_REDIRECT_LOGGED:
 418                                 $this->dieUsageMsg( 'noimageredirect-logged' );
 419
 420                         case EditPage::AS_SPAM_ERROR:
 421                                 $this->dieUsageMsg( array( 'spamdetected', $result['spam'] ) );
 422
 423                         case EditPage::AS_BLOCKED_PAGE_FOR_USER:
 424                                 $this->dieUsageMsg( 'blockedtext' );
 425
 426                         case EditPage::AS_MAX_ARTICLE_SIZE_EXCEEDED:
 427                         case EditPage::AS_CONTENT_TOO_BIG:
 428                                 $this->dieUsageMsg( array( 'contenttoobig', $this->getConfig()->get( 'MaxArticleSize' ) ) );
 429
 430                         case EditPage::AS_READ_ONLY_PAGE_ANON:
 431                                 $this->dieUsageMsg( 'noedit-anon' );
 432
 433                         case EditPage::AS_READ_ONLY_PAGE_LOGGED:
 434                                 $this->dieUsageMsg( 'noedit' );
 435
 436                         case EditPage::AS_READ_ONLY_PAGE:
 437                                 $this->dieReadOnly();
 438
 439                         case EditPage::AS_RATE_LIMITED:
 440                                 $this->dieUsageMsg( 'actionthrottledtext' );
 441
 442                         case EditPage::AS_ARTICLE_WAS_DELETED:
 443                                 $this->dieUsageMsg( 'wasdeleted' );
 444
 445                         case EditPage::AS_NO_CREATE_PERMISSION:
 446                                 $this->dieUsageMsg( 'nocreate-loggedin' );
 447
 448                         case EditPage::AS_BLANK_ARTICLE:
 449                                 $this->dieUsageMsg( 'blankpage' );
 450
 451                         case EditPage::AS_CONFLICT_DETECTED:
 452                                 $this->dieUsageMsg( 'editconflict' );
 453
 454                         // case EditPage::AS_SUMMARY_NEEDED: Can't happen since we set wpIgnoreBlankSummary
 455                         case EditPage::AS_TEXTBOX_EMPTY:
 456                                 $this->dieUsageMsg( 'emptynewsection' );
 457
 458                         case EditPage::AS_SUCCESS_NEW_ARTICLE:
 459                                 $r['new'] = '';
 460                                 // fall-through
 461
 462                         case EditPage::AS_SUCCESS_UPDATE:
 463                                 $r['result'] = 'Success';
 464                                 $r['pageid'] = intval( $titleObj->getArticleID() );
 465                                 $r['title'] = $titleObj->getPrefixedText();
 466                                 $r['contentmodel'] = $titleObj->getContentModel();
 467                                 $newRevId = $articleObject->getLatest();
 468                                 if ( $newRevId == $oldRevId ) {
 469                                         $r['nochange'] = '';
 470                                 } else {
 471                                         $r['oldrevid'] = intval( $oldRevId );
 472                                         $r['newrevid'] = intval( $newRevId );
 473                                         $r['newtimestamp'] = wfTimestamp( TS_ISO_8601,
 474                                                 $pageObj->getTimestamp() );
 475                                 }
 476                                 break;
 477
 478                         case EditPage::AS_SUMMARY_NEEDED:
 479                                 $this->dieUsageMsg( 'summaryrequired' );
 480
 481                         case EditPage::AS_END:
 482                         default:
 483                                 // $status came from WikiPage::doEdit()
 484                                 $errors = $status->getErrorsArray();
 485                                 $this->dieUsageMsg( $errors[0] ); // TODO: Add new errors to message map
 486                                 break;
 487                 }
 488                 $apiResult->addValue( null, $this->getModuleName(), $r );
 489         }
 490
 491         public function mustBePosted() {
 492                 return true;
 493         }
 494
 495         public function isWriteMode() {
 496                 return true;
 497         }
 498
 499         public function getAllowedParams() {
 500                 return array(
 501                         'title' => array(
 502                                 ApiBase::PARAM_TYPE => 'string',
 503                         ),
 504                         'pageid' => array(
 505                                 ApiBase::PARAM_TYPE => 'integer',
 506                         ),
 507                         'section' => null,
 508                         'sectiontitle' => array(
 509                                 ApiBase::PARAM_TYPE => 'string',
 510                         ),
 511                         'text' => null,
 512                         'summary' => null,
 513                         'minor' => false,
 514                         'notminor' => false,
 515                         'bot' => false,
 516                         'basetimestamp' => null,
 517                         'starttimestamp' => null,
 518                         'recreate' => false,
 519                         'createonly' => false,
 520                         'nocreate' => false,
 521                         'watch' => array(
 522                                 ApiBase::PARAM_DFLT => false,
 523                                 ApiBase::PARAM_DEPRECATED => true,
 524                         ),
 525                         'unwatch' => array(
 526                                 ApiBase::PARAM_DFLT => false,
 527                                 ApiBase::PARAM_DEPRECATED => true,
 528                         ),
 529                         'watchlist' => array(
 530                                 ApiBase::PARAM_DFLT => 'preferences',
 531                                 ApiBase::PARAM_TYPE => array(
 532                                         'watch',
 533                                         'unwatch',
 534                                         'preferences',
 535                                         'nochange'
 536                                 ),
 537                         ),
 538                         'md5' => null,
 539                         'prependtext' => null,
 540                         'appendtext' => null,
 541                         'undo' => array(
 542                                 ApiBase::PARAM_TYPE => 'integer'
 543                         ),
 544                         'undoafter' => array(
 545                                 ApiBase::PARAM_TYPE => 'integer'
 546                         ),
 547                         'redirect' => array(
 548                                 ApiBase::PARAM_TYPE => 'boolean',
 549                                 ApiBase::PARAM_DFLT => false,
 550                         ),
 551                         'contentformat' => array(
 552                                 ApiBase::PARAM_TYPE => ContentHandler::getAllContentFormats(),
 553                         ),
 554                         'contentmodel' => array(
 555                                 ApiBase::PARAM_TYPE => ContentHandler::getContentModels(),
 556                         ),
 557                         'token' => array(
 558                                 // Standard definition automatically inserted
 559                                 ApiBase::PARAM_HELP_MSG_APPEND => array( 'apihelp-edit-param-token' ),
 560                         ),
 561                 );
 562         }
 563
 564         public function needsToken() {
 565                 return 'csrf';
 566         }
 567
 568         public function getExamplesMessages() {
 569                 return array(
 570                         'action=edit&title=Test&summary=test%20summary&' .
 571                                 'text=article%20content&basetimestamp=2007-08-24T12:34:54Z&token=123ABC'
 572                                 => 'apihelp-edit-example-edit',
 573                         'action=edit&title=Test&summary=NOTOC&minor=&' .
 574                                 'prependtext=__NOTOC__%0A&basetimestamp=2007-08-24T12:34:54Z&token=123ABC'
 575                                 => 'apihelp-edit-example-prepend',
 576                         'action=edit&title=Test&undo=13585&undoafter=13579&' .
 577                                 'basetimestamp=2007-08-24T12:34:54Z&token=123ABC'
 578                                 => 'apihelp-edit-example-undo',
 579                 );
 580         }
 581
 582         public function getHelpUrls() {
 583                 return 'https://www.mediawiki.org/wiki/API:Edit';
 584         }
 585 }