Actions are things which can be done to pages (edit, delete, rollback, etc). More...

Inheritance diagram for Action:

Public Member Functions
	__construct (Page $page, IContextSource $context=null)
	Constructor. More...

	addHelpLink ($to, $overrideBaseUrl=false)
	Adds help link with an icon via page indicators. More...

	doesWrites ()
	Indicates whether this action may perform database writes. More...

	getContext ()
	Get the IContextSource in use here. More...

	getLanguage ()
	Shortcut to get the user Language being used for this instance. More...

	getName ()
	Return the name of the action this object responds to. More...

	getOutput ()
	Get the OutputPage being used for this instance. More...

	getRequest ()
	Get the WebRequest being used for this instance. More...

	getRestriction ()
	Get the permission required to perform this action. More...

	getSkin ()
	Shortcut to get the Skin being used for this instance. More...

	getTitle ()
	Shortcut to get the Title object from the page. More...

	getUser ()
	Shortcut to get the User being used for this instance. More...

	msg ()
	Get a Message object with context set Parameters are the same as wfMessage() More...

	requiresUnblock ()
	Whether this action can still be executed by a blocked user. More...

	requiresWrite ()
	Whether this action requires the wiki not to be locked. More...

	show ()
	The main action entry point. More...

Static Public Member Functions
static	exists ($name)
	Check if a given action is recognised, even if it's disabled. More...

static	factory ($action, Page $page, IContextSource $context=null)
	Get an appropriate Action subclass for the given action. More...

static	getActionName (IContextSource $context)
	Get the action that will be executed, not necessarily the one passed passed through the "action" request parameter. More...

Protected Member Functions
	checkCanExecute (User $user)
	Checks if the given user (identified by an object) can perform this action. More...

	getDescription ()
	Returns the description that goes below the \<h1\> tag. More...

	getPageTitle ()
	Returns the name that goes in the \<h1\> page title. More...

	setHeaders ()
	Set output headers for noindexing etc. More...

	useTransactionalTimeLimit ()
	Call wfTransactionalTimeLimit() if this request was POSTed. More...

Protected Attributes
	$context
	IContextSource if specified; otherwise we'll use the Context from the Page. More...

	$fields
	The fields used to create the HTMLForm. More...

	$page
	Page on which we're performing the action. More...

Static Private Member Functions
static	getClass ($action, array $overrides)
	Get the Action subclass which should be used to handle this action, false if the action is disabled, or null if it's not recognised. More...

Detailed Description

Actions are things which can be done to pages (edit, delete, rollback, etc).

They are distinct from Special Pages because an action must apply to exactly one page.

To add an action in an extension, create a subclass of Action, and add the key to $wgActions. There is also the deprecated UnknownAction hook

Actions generally fall into two groups: the show-a-form-then-do-something-with-the-input format (protect, delete, move, etc), and the just-do-something format (watch, rollback, patrol, etc). The FormAction and FormlessAction classes represent these two groups.

Definition at line 37 of file Action.php.

Constructor & Destructor Documentation

Action::__construct	(	Page	$page,
		IContextSource	$context = `null`
	)

Constructor.

Only public since 1.21

Parameters

Page	$page
IContextSource \| null	$context

Definition at line 269 of file Action.php.

References $context, $page, page, and wfWarn().

Member Function Documentation

Action::addHelpLink	(	$to,
		$overrideBaseUrl = `false`
	)

Adds help link with an icon via page indicators.

Link target can be overridden by a local message containing a wikilink: the message key is: lowercase action name + '-helppage'.

Parameters

string	$to	Target MediaWiki.org page title or encoded URL.
bool	$overrideBaseUrl	Whether $url is a full URL, to avoid MW.o.

Since: 1.25

Definition at line 390 of file Action.php.

References $wgContLang, getActionName(), getOutput(), global, Skin\makeUrl(), and wfMessage().

Referenced by HistoryAction\onView(), and DeleteAction\show().

Action::checkCanExecute ( User $user )

protected

Checks if the given user (identified by an object) can perform this action.

Can be overridden by sub-classes with more complicated permissions schemes. Failures here must throw subclasses of ErrorPageError

Since: 1.17

Parameters

User $user The user to check, or null to use the context user

Exceptions

UserBlockedError|ReadOnlyError|PermissionsError

Definition at line 308 of file Action.php.

References User\getBlock(), getRestriction(), getTitle(), User\isBlocked(), requiresUnblock(), requiresWrite(), and wfReadOnly().

Referenced by FormlessAction\show(), PurgeAction\show(), and FormAction\show().

Action::doesWrites ( )

Indicates whether this action may perform database writes.

Returns: bool

Since: 1.27

Definition at line 429 of file Action.php.

static Action::exists ( $name )

staticfinal

Check if a given action is recognised, even if it's disabled.

Since: 1.17

Parameters

string $name Name of an action

Returns: bool

Definition at line 169 of file Action.php.

References $name.

Referenced by HistoryAction\fetchRevisions(), ActionTest\testActionExists(), ActionTest\testActionExists_doesNotRequireInstantiation(), ActionTest\testDisabledAction_exists(), and ActionTest\testNull_doesNotExist().

static Action::factory	(		$action,
		Page	$page,
		IContextSource	$context = `null`
	)

staticfinal

Get an appropriate Action subclass for the given action.

Since: 1.17

Parameters

string	$action
Page	$page
IContextSource \| null	$context

Returns: Action|bool|null False if the action is disabled, null if it is not recognised

Definition at line 95 of file Action.php.

References $context.

Referenced by RebuildFileCache\execute(), getActionName(), MediaWiki\performAction(), SkinTemplate\prepareQuickTemplate(), ActionTest\testActionFactory(), ActionTest\testDisabledAction_factoryReturnsFalse(), and ActionTest\testNull_canNotBeInstantiated().

static Action::getActionName ( IContextSource $context )

staticfinal

Get the action that will be executed, not necessarily the one passed passed through the "action" request parameter.

Actions disabled in $wgActions will be replaced by "nosuchaction".

Since: 1.19

Parameters

IContextSource $context

Returns: string Action name

Definition at line 122 of file Action.php.

References $context, $request, IContextSource\canUseWikiPage(), factory(), IContextSource\getRequest(), IContextSource\getWikiPage(), and global.

Referenced by addHelpLink(), SkinTemplate\buildContentNavigationUrls(), MediaWiki\getAction(), OutputPage\getHeadLinksArray(), OutputPage\getJSVars(), OutputPage\headElement(), ActionTest\testDisabledAction_isNotResolved(), ActionTest\testGetActionName(), ActionTest\testGetActionName_editredlinkWorkaround(), ActionTest\testGetActionName_historysubmitWorkaround(), ActionTest\testGetActionName_revisiondeleteWorkaround(), ActionTest\testGetActionName_whenCanNotUseWikiPage_defaultsToView(), ActionTest\testNull_defaultsToView(), and SkinTemplate\wrapHTML().

static Action::getClass	(		$action,
		array	$overrides
	)

staticfinalprivate

Get the Action subclass which should be used to handle this action, false if the action is disabled, or null if it's not recognised.

Parameters

string	$action
array	$overrides

Returns: bool|null|string|callable|Action

Definition at line 67 of file Action.php.

References global.

Action::getContext ( )

final

Get the IContextSource in use here.

Since: 1.17

Returns: IContextSource

Definition at line 178 of file Action.php.

References $context, RequestContext\getMain(), page, wfDebug(), and wfWarn().

Referenced by FormAction\getForm(), getLanguage(), getOutput(), RawAction\getRawText(), getRequest(), getSkin(), getUser(), msg(), RollbackAction\onView(), InfoAction\onView(), HistoryAction\onView(), InfoAction\pageInfo(), EditAction\show(), ProtectAction\show(), DeleteAction\show(), RevisiondeleteAction\show(), and SpecialPageAction\show().

Action::getDescription ( )

protected

Returns the description that goes below the \<h1\> tag.

Since: 1.17

Returns: string HTML

Definition at line 378 of file Action.php.

References getName(), and msg().

Referenced by setHeaders().

Action::getLanguage ( )

final

Shortcut to get the user Language being used for this instance.

Returns: Language

Definition at line 236 of file Action.php.

References getContext().

Referenced by CreditsAction\getAuthor(), CachedAction\getCacheKey(), CreditsAction\getContributors(), InfoAction\getContributors(), RevertAction\getFormFields(), RevertAction\onSuccess(), and InfoAction\pageInfo().

Action::getName ( )

abstract

Return the name of the action this object responds to.

Since: 1.17

Returns: string Lowercase name

Referenced by CachedAction\getCacheKey(), getDescription(), and FormAction\getForm().

Action::getOutput ( )

final

Get the OutputPage being used for this instance.

Since: 1.17

Returns: OutputPage

Definition at line 207 of file Action.php.

References getContext().

Referenced by CachedAction\addCachedHTML(), addHelpLink(), CachedAction\onCacheInitialized(), UnwatchAction\onSuccess(), WatchAction\onSuccess(), PurgeAction\onSuccess(), RevertAction\onSuccess(), MarkpatrolledAction\onView(), RawAction\onView(), RollbackAction\onView(), HistoryAction\onView(), setHeaders(), FormlessAction\show(), ProtectAction\show(), ViewAction\show(), DeleteAction\show(), and EditAction\show().

Action::getPageTitle ( )

protected

Returns the name that goes in the \<h1\> page title.

Returns: string

Definition at line 368 of file Action.php.

References getTitle().

Referenced by setHeaders().

Action::getRequest ( )

final

Get the WebRequest being used for this instance.

Since: 1.17

Returns: WebRequest

Definition at line 197 of file Action.php.

References getContext().

Referenced by RevertAction\alterForm(), RevertAction\checkCanExecute(), HistoryAction\feed(), RawAction\getContentType(), FormAction\getForm(), RevertAction\getFormFields(), SpecialPageAction\getName(), RawAction\getOldId(), RawAction\getRawText(), RevertAction\onSubmit(), RevertAction\onSuccess(), MarkpatrolledAction\onView(), RawAction\onView(), RollbackAction\onView(), HistoryAction\onView(), PurgeAction\show(), CachedAction\startCache(), and useTransactionalTimeLimit().

Action::getRestriction ( )

Get the permission required to perform this action.

Often, but not always, the same as the action name

Since: 1.17

Returns: string|null

Definition at line 295 of file Action.php.

Referenced by checkCanExecute().

Action::getSkin ( )

final

Shortcut to get the Skin being used for this instance.

Since: 1.17

Returns: Skin

Definition at line 227 of file Action.php.

References getContext().

Action::getTitle ( )

final

Shortcut to get the Title object from the page.

Since: 1.17

Returns: Title

Definition at line 246 of file Action.php.

References page.

Referenced by RevertAction\alterForm(), RevertAction\checkCanExecute(), checkCanExecute(), HistoryAction\feed(), HistoryAction\feedEmpty(), HistoryAction\feedItem(), HistoryAction\fetchRevisions(), HistoryAction\getDescription(), RevertAction\getDescription(), FormAction\getForm(), RevertAction\getFormFields(), RawAction\getOldId(), HistoryAction\getPageTitle(), RevertAction\getPageTitle(), getPageTitle(), InfoAction\getPageTitle(), RawAction\getRawText(), UnwatchAction\onSubmit(), WatchAction\onSubmit(), RevertAction\onSubmit(), UnwatchAction\onSuccess(), WatchAction\onSuccess(), PurgeAction\onSuccess(), RevertAction\onSuccess(), RollbackAction\onView(), HistoryAction\onView(), CreditsAction\othersLink(), and InfoAction\pageInfo().

Action::getUser ( )

final

Shortcut to get the User being used for this instance.

Since: 1.17

Returns: User

Definition at line 217 of file Action.php.

References getContext().

Referenced by RevertAction\getFormFields(), UnwatchAction\onSubmit(), WatchAction\onSubmit(), RevertAction\onSubmit(), RevertAction\onSuccess(), MarkpatrolledAction\onView(), RawAction\onView(), RollbackAction\onView(), HistoryAction\onView(), InfoAction\pageInfo(), FormlessAction\show(), EditAction\show(), PurgeAction\show(), and FormAction\show().

Action::msg ( )

final

Get a Message object with context set Parameters are the same as wfMessage()

Returns: Message

Definition at line 256 of file Action.php.

References $params, and getContext().

Referenced by RevertAction\checkCanExecute(), HistoryAction\feed(), HistoryAction\feedEmpty(), HistoryAction\feedItem(), CreditsAction\getAuthor(), CreditsAction\getContributors(), InfoAction\getContributors(), UnwatchAction\getDescription(), CreditsAction\getDescription(), WatchAction\getDescription(), HistoryAction\getDescription(), getDescription(), RevertAction\getFormFields(), HistoryAction\getPageTitle(), RevertAction\getPageTitle(), InfoAction\getPageTitle(), MarkpatrolledAction\onView(), CreditsAction\onView(), RollbackAction\onView(), InfoAction\onView(), HistoryAction\onView(), CreditsAction\othersLink(), InfoAction\pageInfo(), PurgeAction\postText(), HistoryAction\preCacheMessages(), UnwatchAction\preText(), WatchAction\preText(), PurgeAction\preText(), SpecialPageAction\show(), and CreditsAction\userLink().

Action::requiresUnblock ( )

Whether this action can still be executed by a blocked user.

Since: 1.17

Returns: bool

Definition at line 346 of file Action.php.

Referenced by checkCanExecute().

Action::requiresWrite ( )

Whether this action requires the wiki not to be locked.

Since: 1.17

Returns: bool

Definition at line 336 of file Action.php.

Referenced by checkCanExecute().

Action::setHeaders ( )

protected

Set output headers for noindexing etc.

This function will not be called through the execute() entry point, so only put UI-related stuff in here.

Since: 1.17

Definition at line 355 of file Action.php.

References $out, getDescription(), getOutput(), and getPageTitle().

Referenced by FormlessAction\show(), PurgeAction\show(), and FormAction\show().

Action::show ( )

abstract

The main action entry point.

Do all output for display and send it to the context output. Do not use globals $wgOut, $wgRequest, etc, in implementations; use $this->getOutput(), etc.