Controller-like object for creating and updating pages by creating new revisions. More...

Public Member Functions
	__construct (UserIdentity $author, WikiPage $wikiPage, DerivedPageDataUpdater $derivedDataUpdater, ILoadBalancer $loadBalancer, RevisionStore $revisionStore, SlotRoleRegistry $slotRoleRegistry, IContentHandlerFactory $contentHandlerFactory, HookContainer $hookContainer, UserEditTracker $userEditTracker, UserGroupManager $userGroupManager, TitleFormatter $titleFormatter, ServiceOptions $serviceOptions, array $softwareTags, LoggerInterface $logger)

	addSoftwareTag (string $tag)
	Sets software tag to this update.

	addTag (string $tag)
	Sets a tag to apply to this update.

	addTags (array $tags)
	Sets tags to apply to this update.

	getEditResult ()
	Returns the EditResult associated with this PageUpdater.

	getExplicitTags ()
	Returns the list of tags set using the addTag() method.

	getNewRevision ()
	The new revision created by saveRevision(), or null if saveRevision() has not yet been called, failed, or did not create a new revision because the content did not change.

	getPage ()
	Get the page we're currently updating.

	getStatus ()
	The Status object indicating whether saveRevision() was successful, or null if saveRevision() was not yet called on this instance.

	grabParentRevision ()
	Returns the revision that was the page's current revision when grabParentRevision() was first called.

	hasEditConflict ( $expectedParentRevision)
	Checks whether this update conflicts with another update performed between the client loading data to prepare an edit, and the client committing the edit.

	inheritSlot (SlotRecord $originalSlot)
	Explicitly inherit a slot from some earlier revision.

	isChange ()
	Whether the prepared edit is a change compared to the previous revision.

	isNew ()
	Whether saveRevision() was called and created a new page.

	isUnchanged ()
	Whether saveRevision() did create a revision because the content didn't change: (null-edit).

	markAsRevert (int $revertMethod, int $newestRevertedRevId, int $revertAfterRevId=null)
	Marks this edit as a revert and applies relevant information.

	prepareUpdate (int $flags=0)
	Prepare the update.

	preventChange ()
	Disable new revision creation, throwing an exception if it is attempted.

	removeSlot ( $role)
	Removes the slot with the given role.

	saveRevision (CommentStoreComment $summary, int $flags=0)
	Change an existing article or create a new article.

	setContent ( $role, Content $content)
	Set the new content for the given slot role.

	setFlags (int $flags)
	Sets any flags to use when performing the update.

	setForceEmptyRevision (bool $forceEmptyRevision)
	Set whether null-edits should create a revision.

	setOriginalRevisionId ( $originalRevId)
	Sets the ID of an earlier revision that is being repeated or restored by this update.

	setRcPatrolStatus ( $status)
	Sets the "patrolled" status of the edit.

	setSlot (SlotRecord $slot)
	Set the new slot for the given slot role.

	setUseAutomaticEditSummaries ( $useAutomaticEditSummaries)
	Can be used to enable or disable automatic summaries that are applied to certain kinds of changes, like completely blanking a page.

	setUsePageCreationLog ( $use)
	Whether to create a log entry for new page creations.

	updateAuthor (UserIdentity $author)
	After creation of the user during the save process, update the stored UserIdentity.

	updateRevision (int $revId=0)
	Updates derived slots of an existing article.

	wasCommitted ()
	Whether saveRevision() has been called on this instance.

	wasRevisionCreated ()
	Whether saveRevision() did create a revision.

	wasSuccessful ()
	Whether saveRevision() completed successfully.

Public Attributes
const	CONSTRUCTOR_OPTIONS
	Options that have to be present in the ServiceOptions object passed to the constructor.

Detailed Description

Controller-like object for creating and updating pages by creating new revisions.

PageUpdater instances provide compare-and-swap (CAS) protection against concurrent updates between the time grabParentRevision() is called and saveRevision() inserts a new revision. This allows application logic to safely perform edit conflict resolution using the parent revision's content.

See also: docs/pageupdater.md for more information.

MCR migration note: this replaces the relevant methods in WikiPage.

Since: 1.32

Definition at line 83 of file PageUpdater.php.

Constructor & Destructor Documentation

◆ __construct()

MediaWiki\Storage\PageUpdater::__construct	(	UserIdentity	$author,
		WikiPage	$wikiPage,
		DerivedPageDataUpdater	$derivedDataUpdater,
		ILoadBalancer	$loadBalancer,
		RevisionStore	$revisionStore,
		SlotRoleRegistry	$slotRoleRegistry,
		IContentHandlerFactory	$contentHandlerFactory,
		HookContainer	$hookContainer,
		UserEditTracker	$userEditTracker,
		UserGroupManager	$userGroupManager,
		TitleFormatter	$titleFormatter,
		ServiceOptions	$serviceOptions,
		array	$softwareTags,
		LoggerInterface	$logger )

Parameters

UserIdentity	$author
WikiPage	$wikiPage
DerivedPageDataUpdater	$derivedDataUpdater
ILoadBalancer	$loadBalancer
RevisionStore	$revisionStore
SlotRoleRegistry	$slotRoleRegistry
IContentHandlerFactory	$contentHandlerFactory
HookContainer	$hookContainer
UserEditTracker	$userEditTracker
UserGroupManager	$userGroupManager
TitleFormatter	$titleFormatter
ServiceOptions	$serviceOptions
string[]	$softwareTags	Array of currently enabled software change tags. Can be obtained from ChangeTags::getSoftwareTags()
LoggerInterface	$logger

Definition at line 234 of file PageUpdater.php.

References MediaWiki\Config\ServiceOptions\assertRequiredOptions(), MediaWiki\Storage\EditResultBuilder\CONSTRUCTOR_OPTIONS, MediaWiki\Config\ServiceOptions\get(), and MediaWiki\MainConfigNames\ManualRevertSearchRadius.

Member Function Documentation

◆ addSoftwareTag()

MediaWiki\Storage\PageUpdater::addSoftwareTag ( string $tag )

Sets software tag to this update.

If the tag is not defined in the current software tags, it's ignored.

Since: 1.38

Parameters

string $tag

Returns: $this

Definition at line 698 of file PageUpdater.php.

◆ addTag()

MediaWiki\Storage\PageUpdater::addTag ( string $tag )

Sets a tag to apply to this update.

Callers are responsible for permission checks, using ChangeTags::canAddTagsAccompanyingChange.

Parameters

string $tag

Returns: $this

Definition at line 670 of file PageUpdater.php.

◆ addTags()

MediaWiki\Storage\PageUpdater::addTags ( array $tags )

Sets tags to apply to this update.

Callers are responsible for permission checks, using ChangeTags::canAddTagsAccompanyingChange.

Parameters

string[] $tags

Returns: $this

Definition at line 682 of file PageUpdater.php.

Referenced by EditPage\internalAttemptSave().

◆ getEditResult()

MediaWiki\Storage\PageUpdater::getEditResult ( )

Returns the EditResult associated with this PageUpdater.

Will return null if PageUpdater::saveRevision() wasn't called yet. Will also return null if the update was not successful.

Returns: EditResult|null

Definition at line 659 of file PageUpdater.php.

◆ getExplicitTags()

MediaWiki\Storage\PageUpdater::getExplicitTags ( )

Returns the list of tags set using the addTag() method.

Returns: string[]

Definition at line 710 of file PageUpdater.php.

◆ getNewRevision()

MediaWiki\Storage\PageUpdater::getNewRevision ( )

The new revision created by saveRevision(), or null if saveRevision() has not yet been called, failed, or did not create a new revision because the content did not change.

Returns: RevisionRecord|null

Definition at line 1148 of file PageUpdater.php.

◆ getPage()

MediaWiki\Storage\PageUpdater::getPage ( )

Get the page we're currently updating.

Returns: PageIdentity

Definition at line 456 of file PageUpdater.php.

◆ getStatus()

MediaWiki\Storage\PageUpdater::getStatus ( )

The Status object indicating whether saveRevision() was successful, or null if saveRevision() was not yet called on this instance.

Note: This is here for compatibility with WikiPage::doUserEditContent. It may be deprecated soon.

Possible status errors: edit-hook-aborted: The ArticleSave hook aborted the update but didn't set the fatal flag of $status. edit-gone-missing: In update mode, but the article didn't exist. edit-conflict: In update mode, the article changed unexpectedly. edit-no-change: Warning that the text was the same as before. edit-already-exists: In creation mode, but the article already exists.

Extensions may define additional errors.

$return->value will contain an associative array with members as follows: new: Boolean indicating if the function attempted to create a new article. revision-record: The RevisionRecord object for the inserted revision, or null.

Returns: null|Status

Definition at line 1071 of file PageUpdater.php.

Referenced by EditPage\internalAttemptSave().

◆ grabParentRevision()

MediaWiki\Storage\PageUpdater::grabParentRevision ( )

Returns the revision that was the page's current revision when grabParentRevision() was first called.

This revision is the expected parent revision of the update, and will be recorded as the new revision's parent revision (unless no new revision is created because the content was not changed).

This method MUST not be called after saveRevision() was called!

The current revision determined by the first call to this method effectively acts a compare-and-swap (CAS) token which is checked by saveRevision(), which fails if any concurrent updates created a new revision.

Application code should call this method before applying transformations to the new content that depend on the parent revision, e.g. adding/replacing sections, or resolving conflicts via a 3-way merge. This protects against race conditions triggered by concurrent updates.

See also: DerivedPageDataUpdater::grabCurrentRevision()

Note: The expected parent revision is not to be confused with the logical base revision. The base revision is specified by the client, the parent revision is determined from the database. If base revision and parent revision are not the same, the updates is considered to require edit conflict resolution.

Exceptions

LogicException if called after saveRevision().

Returns: RevisionRecord|null the parent revision, or null of the page does not yet exist.

Definition at line 543 of file PageUpdater.php.

◆ hasEditConflict()

MediaWiki\Storage\PageUpdater::hasEditConflict ( $expectedParentRevision )

Checks whether this update conflicts with another update performed between the client loading data to prepare an edit, and the client committing the edit.

This is intended to detect user level "edit conflict" when the latest revision known to the client is no longer the current revision when processing the update.

An update expected to create a new page can be checked by setting $expectedParentRevision = 0. Such an update is considered to have a conflict if a current revision exists (that is, the page was created since the edit was initiated on the client).

This method returning true indicates to calling code that edit conflict resolution should be applied before saving any data. It does not prevent the update from being performed, and it should not be confused with a "late" conflict indicated by the "edit-conflict" status. A "late" conflict is a CAS failure caused by an update being performed concurrently between the time grabParentRevision() was called and the time saveRevision() trying to insert the new revision.

Note: A user level edit conflict is not the same as the "edit-conflict" status triggered by a CAS failure. Calling this method establishes the CAS token, it does not check against it: This method calls grabParentRevision(), and thus causes the expected parent revision for the update to be fixed to the page's current revision at this point in time. It acts as a compare-and-swap (CAS) token in that it is guaranteed that saveRevision() will fail with the "edit-conflict" status if the current revision of the page changes after hasEditConflict() (or grabParentRevision()) was called and before saveRevision() could insert a new revision.

See also: grabParentRevision()

Parameters

int $expectedParentRevision The ID of the revision the client expects to be the current one. Use 0 to indicate that the page is expected to not yet exist.

Returns: bool

Definition at line 509 of file PageUpdater.php.

◆ inheritSlot()

MediaWiki\Storage\PageUpdater::inheritSlot ( SlotRecord $originalSlot )

Explicitly inherit a slot from some earlier revision.

The primary use case for this is rollbacks, when slots are to be inherited from the rollback target, overriding the content from the parent revision (which is the revision being rolled back).

This should typically not be used to inherit slots from the parent revision, which happens implicitly. Using this method causes the given slot to be treated as "modified" during revision creation, even if it has the same content as in the parent revision.

Parameters

SlotRecord $originalSlot A slot already existing in the database, to be inherited by the new revision.

Returns: $this

Definition at line 589 of file PageUpdater.php.

◆ isChange()

MediaWiki\Storage\PageUpdater::isChange ( )

Whether the prepared edit is a change compared to the previous revision.

Returns: bool

Definition at line 1112 of file PageUpdater.php.

◆ isNew()

MediaWiki\Storage\PageUpdater::isNew ( )

Whether saveRevision() was called and created a new page.

Returns: bool

Definition at line 1092 of file PageUpdater.php.

◆ isUnchanged()

MediaWiki\Storage\PageUpdater::isUnchanged ( )

Whether saveRevision() did create a revision because the content didn't change: (null-edit).

Whether the content changed or not is determined by DerivedPageDataUpdater::isChange().

Deprecated: since 1.38, use wasRevisionCreated() instead.

Returns: bool

Definition at line 1103 of file PageUpdater.php.

◆ markAsRevert()

MediaWiki\Storage\PageUpdater::markAsRevert	(	int	$revertMethod,
		int	$newestRevertedRevId,
		int	$revertAfterRevId = null )

Marks this edit as a revert and applies relevant information.

Will also cause the PageUpdater to add a relevant change tag when saving the edit.

Parameters

int	$revertMethod	The method used to make the revert: REVERT_UNDO, REVERT_ROLLBACK or REVERT_MANUAL
int	$newestRevertedRevId	the revision ID of the latest reverted revision.
int \| null	$revertAfterRevId	the revision ID after which revisions are being reverted. Defaults to the revision before the $newestRevertedRevId.

Returns: $this

See also: EditResultBuilder::markAsRevert()

Definition at line 641 of file PageUpdater.php.

◆ prepareUpdate()

MediaWiki\Storage\PageUpdater::prepareUpdate ( int $flags = 0 )

Prepare the update.

This sets up the RevisionRecord to be saved.

Since: 1.37

Parameters

int $flags Bitfield, will be combined with flags set via setFlags(). EDIT_FORCE_BOT and EDIT_INTERNAL will bypass the edit stash.

Returns: PreparedUpdate

Definition at line 323 of file PageUpdater.php.

Referenced by EditPage\internalAttemptSave().

◆ preventChange()

MediaWiki\Storage\PageUpdater::preventChange ( )

Disable new revision creation, throwing an exception if it is attempted.

Returns: $this

Definition at line 1121 of file PageUpdater.php.

◆ removeSlot()

MediaWiki\Storage\PageUpdater::removeSlot ( $role )

Removes the slot with the given role.

This discontinues the "stream" of slots with this role on the page, preventing the new revision, and any subsequent revisions, from inheriting the slot with this role.

Parameters

string $role A slot role name (but not "main")

Definition at line 608 of file PageUpdater.php.

◆ saveRevision()

MediaWiki\Storage\PageUpdater::saveRevision	(	CommentStoreComment	$summary,
		int	$flags = 0 )

Change an existing article or create a new article.

Updates RC and all necessary caches, optionally via the deferred update array. This does not check user permissions.

It is guaranteed that saveRevision() will fail if the current revision of the page changes after grabParentRevision() was called and before saveRevision() can insert a new revision, as per the CAS mechanism described above.

The caller is however responsible for calling hasEditConflict() to detect a user-level edit conflict, and to adjust the content of the new revision accordingly, e.g. by using a 3-way-merge.

MCR migration note: this replaces WikiPage::doUserEditContent. Callers that change to using saveRevision() now need to check the "minoredit" themselves before using EDIT_MINOR.

Parameters

CommentStoreComment	$summary	Edit summary
int	$flags	Bitfield, will be combined with the flags set via setFlags(). See there for details.

Note: If neither EDIT_NEW nor EDIT_UPDATE is specified, the expected state is detected automatically via grabParentRevision(). In this case, the "edit-already-exists" or "edit-gone-missing" errors may still be triggered due to race conditions, if the page was unexpectedly created or deleted while revision creation is in progress. This can be viewed as part of the CAS mechanism described above.

Returns: RevisionRecord|null The new revision, or null if no new revision was created due to a failure or a null-edit. Use wasRevisionCreated(), wasSuccessful() and getStatus() to determine the outcome of the revision creation.

Exceptions

MWException
RuntimeException

Definition at line 838 of file PageUpdater.php.

References EDIT_MINOR, EDIT_NEW, EDIT_UPDATE, and wfMessage().

◆ setContent()

MediaWiki\Storage\PageUpdater::setContent	(		$role,
		Content	$content )

Set the new content for the given slot role.

Parameters

string	$role	A slot role name (such as "main")
Content	$content

Returns: $this

Definition at line 554 of file PageUpdater.php.

References $content.

Referenced by EditPage\internalAttemptSave().

◆ setFlags()

MediaWiki\Storage\PageUpdater::setFlags ( int $flags )

Sets any flags to use when performing the update.

Flags passed in subsequent calls to this method as well as calls to prepareUpdate() or saveRevision() are aggregated using bitwise OR.

Known flags:

 EDIT_NEW
     Create a new page, or fail with "edit-already-exists" if the page exists.
 EDIT_UPDATE
     Create a new revision, or fail with "edit-gone-missing" if the page does not exist.
 EDIT_MINOR
     Mark this revision as minor
 EDIT_SUPPRESS_RC
     Do not log the change in recentchanges
 EDIT_FORCE_BOT
     Mark the revision as automated ("bot edit")
 EDIT_AUTOSUMMARY
     Fill in blank summaries with generated text where possible
 EDIT_INTERNAL
     Signal that the page retrieve/save cycle happened entirely in this request.

Parameters

int $flags Bitfield

Returns: $this

Definition at line 308 of file PageUpdater.php.

◆ setForceEmptyRevision()

MediaWiki\Storage\PageUpdater::setForceEmptyRevision ( bool $forceEmptyRevision )

Set whether null-edits should create a revision.

Enabling this allows the creation of dummy revisions ("null revisions") to mark events such as renaming in the page history.

Callers should typically also call setOriginalRevisionId() to indicate the ID of the revision that is being repeated. That ID can be obtained from grabParentRevision()->getId().

Since: 1.38

Note: this calls $this->setOriginalRevisionId() with the ID of the current revision, starting the CAS bracket by virtue of calling $this->grabParentRevision().; saveRevision() will fail with a LogicException if setForceEmptyRevision( true ) was called and also content was changed via setContent(), removeSlot(), or inheritSlot().

Parameters

bool $forceEmptyRevision

Returns: $this

Definition at line 426 of file PageUpdater.php.

◆ setOriginalRevisionId()

MediaWiki\Storage\PageUpdater::setOriginalRevisionId ( $originalRevId )

Sets the ID of an earlier revision that is being repeated or restored by this update.

The new revision is expected to have the exact same content as the given original revision. This is used with rollbacks and with dummy "null" revisions which are created to record things like page moves. setForceEmptyRevision() calls this implicitly.

Parameters

int | bool $originalRevId The original revision id, or false if no earlier revision is known to be repeated or restored by this update.

Returns: $this

Definition at line 624 of file PageUpdater.php.

Referenced by EditPage\internalAttemptSave().

◆ setRcPatrolStatus()

MediaWiki\Storage\PageUpdater::setRcPatrolStatus ( $status )

Sets the "patrolled" status of the edit.

Callers should check the "patrol" and "autopatrol" permissions as appropriate.

See also: $wgUseRCPatrol; $wgUseNPPatrol

Parameters

int $status RC patrol status, e.g. RecentChange::PRC_AUTOPATROLLED.

Returns: $this

Definition at line 390 of file PageUpdater.php.

Referenced by EditPage\internalAttemptSave().

◆ setSlot()

MediaWiki\Storage\PageUpdater::setSlot ( SlotRecord $slot )

Set the new slot for the given slot role.

Parameters

SlotRecord $slot

Returns: $this

Definition at line 567 of file PageUpdater.php.

References MediaWiki\Revision\SlotRecord\getRole().

◆ setUseAutomaticEditSummaries()

MediaWiki\Storage\PageUpdater::setUseAutomaticEditSummaries ( $useAutomaticEditSummaries )

Can be used to enable or disable automatic summaries that are applied to certain kinds of changes, like completely blanking a page.

Parameters

bool $useAutomaticEditSummaries

Returns: $this

See also: $wgUseAutomaticEditSummaries

Definition at line 375 of file PageUpdater.php.

◆ setUsePageCreationLog()

MediaWiki\Storage\PageUpdater::setUsePageCreationLog ( $use )

Whether to create a log entry for new page creations.

See also: $wgPageCreationLog

Parameters

bool $use

Returns: $this

Definition at line 403 of file PageUpdater.php.

◆ updateAuthor()

MediaWiki\Storage\PageUpdater::updateAuthor ( UserIdentity $author )

After creation of the user during the save process, update the stored UserIdentity.

Since: 1.39

Parameters

UserIdentity $author

Definition at line 358 of file PageUpdater.php.

References MediaWiki\User\UserIdentity\getName().

◆ updateRevision()

MediaWiki\Storage\PageUpdater::updateRevision ( int $revId = 0 )

Updates derived slots of an existing article.

Does not update RC. Updates all necessary caches, optionally via the deferred update array. This does not check user permissions. Does not do a PST.

Use wasRevisionCreated(), wasSuccessful() and getStatus() to determine the outcome of the revision update.

Parameters

int $revId

Since: 1.36

Definition at line 973 of file PageUpdater.php.

References EDIT_INTERNAL, and wfMessage().

◆ wasCommitted()

MediaWiki\Storage\PageUpdater::wasCommitted ( )

Whether saveRevision() has been called on this instance.

Returns: bool

Definition at line 1044 of file PageUpdater.php.

◆ wasRevisionCreated()

MediaWiki\Storage\PageUpdater::wasRevisionCreated ( )

Whether saveRevision() did create a revision.

This is not the same as wasSuccessful(): when the new content is exactly the same as the old one (DerivedPageDataUpdater::isChange() returns false) and setForceEmptyRevision( true ) is not set, no new revision is created, but the save is considered successful. This behavior constitutes a "null edit".

Since: 1.38

Returns: bool

Definition at line 1136 of file PageUpdater.php.

◆ wasSuccessful()

MediaWiki\Storage\PageUpdater::wasSuccessful ( )

Whether saveRevision() completed successfully.

This is not the same as wasRevisionCreated(): when the new content is exactly the same as the old one (DerivedPageDataUpdater::isChange() returns false) and setForceEmptyRevision( true ) is not set, no new revision is created, but the save is considered successful. This behavior constitutes a "null edit".

Returns: bool

Definition at line 1083 of file PageUpdater.php.

Member Data Documentation

◆ CONSTRUCTOR_OPTIONS

const MediaWiki\Storage\PageUpdater::CONSTRUCTOR_OPTIONS

Initial value:

= [
        MainConfigNames::ManualRevertSearchRadius,
        MainConfigNames::UseRCPatrol,
    ]

Options that have to be present in the ServiceOptions object passed to the constructor.

Note: When adding options here, also add them to PageUpdaterFactory::CONSTRUCTOR_OPTIONS.

Access: internal

Definition at line 90 of file PageUpdater.php.

The documentation for this class was generated from the following file:

includes/Storage/PageUpdater.php

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ addSoftwareTag()

◆ addTag()

◆ addTags()

◆ getEditResult()

◆ getExplicitTags()

◆ getNewRevision()

◆ getPage()

◆ getStatus()

◆ grabParentRevision()

◆ hasEditConflict()

◆ inheritSlot()

◆ isChange()

◆ isNew()

◆ isUnchanged()

◆ markAsRevert()

◆ prepareUpdate()

◆ preventChange()

◆ removeSlot()

◆ saveRevision()

◆ setContent()

◆ setFlags()

◆ setForceEmptyRevision()

◆ setOriginalRevisionId()

◆ setRcPatrolStatus()

◆ setSlot()

◆ setUseAutomaticEditSummaries()

◆ setUsePageCreationLog()

◆ updateAuthor()

◆ updateRevision()

◆ wasCommitted()

◆ wasRevisionCreated()

◆ wasSuccessful()

Member Data Documentation

◆ CONSTRUCTOR_OPTIONS