Class to output help for an API module. More...

Collaboration diagram for ApiHelp:

[legend]

Public Member Functions
	__construct (ApiMain $main, $action, SkinFactory $skinFactory)

	execute ()
	Evaluates the parameters, performs the requested query, and sets up the result.

	getAllowedParams ()
	Returns an array of allowed parameters (parameter name) => (default value) or (parameter name) => (array with PARAM_* constants as keys) Don't call this function directly: use getFinalParams() to allow hooks to modify parameters as needed.

	getCustomPrinter ()
	If the module may only be used with a certain format module, it should override this method to return an instance of that formatter.

	getHelpUrls ()
	Return links to more detailed help pages about the module.

	isReadMode ()
	Indicates whether this module requires read rights.

	shouldCheckMaxlag ()
	Indicates if this module needs maxlag to be checked.

Public Member Functions inherited from ApiBase
	__construct (ApiMain $mainModule, $moduleName, $modulePrefix='')

	getModuleManager ()
	Get the module manager, or null if this module has no submodules.

	isWriteMode ()
	Indicates whether this module requires write mode.

	mustBePosted ()
	Indicates whether this module must be called with a POST request.

	isDeprecated ()
	Indicates whether this module is deprecated.

	isInternal ()
	Indicates whether this module is considered to be "internal".

	needsToken ()
	Returns the token type this module requires in order to execute.

	getConditionalRequestData ( $condition)
	Returns data for HTTP conditional request mechanisms.

	getModuleName ()
	Get the name of the module being executed by this instance.

	getModulePrefix ()
	Get parameter prefix (usually two letters or an empty string).

	getMain ()
	Get the main module.

	isMain ()
	Returns true if this module is the main module ($this === $this->mMainModule), false otherwise.

	getParent ()
	Get the parent of this module.

	lacksSameOriginSecurity ()
	Returns true if the current request breaks the same-origin policy.

	getModulePath ()
	Get the path to this module.

	getModuleFromPath ( $path)
	Get a module from its module path.

	getResult ()
	Get the result object.

	getErrorFormatter ()

	getContinuationManager ()

	setContinuationManager (ApiContinuationManager $manager=null)

	dynamicParameterDocumentation ()
	Indicate if the module supports dynamically-determined parameters that cannot be included in self::getAllowedParams().

	encodeParamName ( $paramName)
	This method mangles parameter name based on the prefix supplied to the constructor.

	extractRequestParams ( $options=[])
	Using getAllowedParams(), this function makes an array of the values provided by the user, with the key being the name of the variable, and value - validated value from user or default.

	requireOnlyOneParameter ( $params,... $required)
	Die if 0 or more than one of a certain set of parameters is set and not false.

	requireMaxOneParameter ( $params,... $required)
	Dies if more than one parameter from a certain set of parameters are set and not false.

	requireAtLeastOneParameter ( $params,... $required)
	Die if 0 of a certain set of parameters is set and not false.

	requirePostedParameters ( $params, $prefix='prefix')
	Die if any of the specified parameters were found in the query part of the URL rather than the HTTP post body contents.

	getTitleOrPageId ( $params, $load=false)
	Attempts to load a WikiPage object from a title or pageid parameter, if possible.

	getTitleFromTitleOrPageId ( $params)
	Get a Title object from a title or pageid param, if it is possible.

	handleParamNormalization ( $paramName, $value, $rawValue)
	Handle when a parameter was Unicode-normalized.

	validateToken ( $token, array $params)
	Validate the supplied token.

	getWatchlistUser ( $params)
	Gets the user for whom to get the watchlist.

	errorArrayToStatus (array $errors, Authority $performer=null)
	Turn an array of messages into a Status.

	addBlockInfoToStatus (StatusValue $status, Authority $user=null)
	Add block info to block messages in a Status.

	addWarning ( $msg, $code=null, $data=null)
	Add a warning for this module.

	addDeprecation ( $msg, $feature, $data=[])
	Add a deprecation warning for this module.

	addError ( $msg, $code=null, $data=null)
	Add an error for this module without aborting.

	addMessagesFromStatus (StatusValue $status, $types=[ 'warning', 'error'], array $filter=[])
	Add warnings and/or errors from a Status.

	dieWithError ( $msg, $code=null, $data=null, $httpCode=0)
	Abort execution with an error.

	dieWithException (Throwable $exception, array $options=[])
	Abort execution with an error derived from a throwable.

	dieBlocked (Block $block)
	Throw an ApiUsageException, which will (if uncaught) call the main module's error handler and die with an error message including block info.

	dieStatus (StatusValue $status)
	Throw an ApiUsageException based on the Status object.

	dieReadOnly ()
	Helper function for readonly errors.

	checkUserRightsAny ( $rights)
	Helper function for permission-denied errors.

	checkTitleUserPermissions (PageIdentity $pageIdentity, $actions, array $options=[])
	Helper function for permission-denied errors.

	dieWithErrorOrDebug ( $msg, $code=null, $data=null, $httpCode=null)
	Will only set a warning instead of failing if the global $wgDebugAPI is set to true.

	logFeatureUsage ( $feature)
	Write logging information for API features to a debug log, for usage analysis.

	getFinalSummary ()
	Get the final module summary.

	getFinalDescription ()
	Get the final module description, after hooks have had a chance to tweak it as needed.

	getFinalParams ( $flags=0)
	Get the final list of parameters, after hooks have had a chance to tweak it as needed.

	getFinalParamDescription ()
	Get final parameter descriptions, after hooks have had a chance to tweak it as needed.

	modifyHelp (array &$help, array $options, array &$tocData)
	Called from ApiHelp before the pieces are joined together and returned.

Public Member Functions inherited from MediaWiki\Context\ContextSource
	canUseWikiPage ()
	Check whether a WikiPage object can be get with getWikiPage().

	exportSession ()
	Export the resolved user IP, HTTP headers, user ID, and session ID.

	getActionName ()
	Get the action name for the current web request.

	getAuthority ()

	getConfig ()

	getContext ()
	Get the base IContextSource object.

	getCsrfTokenSet ()
	Get a repository to obtain and match CSRF tokens.

	getLanguage ()

	getLanguageCode ()

	getOutput ()

	getRequest ()

	getSkin ()

	getTiming ()

	getTitle ()

	getUser ()

	getWikiPage ()
	Get the WikiPage object.

	msg ( $key,... $params)
	Get a Message object with context set Parameters are the same as wfMessage()

	setContext (IContextSource $context)

Static Public Member Functions
static	fixHelpLinks ( $html, $helptitle=null, $localModules=[])
	Replace Special:ApiHelp links with links to api.php.

static	getHelp (IContextSource $context, $modules, array $options)
	Generate help for the specified modules.

Static Public Member Functions inherited from ApiBase
static	makeMessage ( $msg, IContextSource $context, array $params=null)
	Create a Message from a string or array.

static	clearCacheForTest ()
	Reset static caches of database state.

Protected Member Functions
	getExamplesMessages ()
	Returns usage examples for this module.

Protected Member Functions inherited from ApiBase
	getWebUITokenSalt (array $params)
	Fetch the salt used in the Web UI corresponding to this module.

	getDB ()
	Gets a default replica DB connection object.

	getPermissionManager ()
	Obtain a PermissionManager instance that subclasses may use in their authorization checks.

	getHookContainer ()
	Get a HookContainer, for running extension hooks or for hook metadata.

	getHookRunner ()
	Get an ApiHookRunner for running core API hooks.

	getParameter ( $paramName, $parseLimit=true)
	Get a value for the given parameter.

	getParameterFromSettings ( $name, $settings, $parseLimit)
	Using the settings, determine the value for the given parameter.

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

	filterIDs ( $fields, array $ids)
	Filter out-of-range values from a list of positive integer IDs.

	parseContinueParamOrDie (string $continue, array $types)
	Parse the 'continue' parameter in the usual format and validate the types of each part, or die with the 'badcontinue' error if the format, types, or the number of parts is wrong.

	dieContinueUsageIf ( $condition)
	Die with the 'badcontinue' error.

	getSummaryMessage ()
	Return the summary message.

	getExtendedDescription ()
	Return the extended help text message.

	getHelpFlags ()
	Generates the list of flags for the help screen and for action=paraminfo.

	getModuleSourceInfo ()
	Returns information about the source of this module, if known.

Additional Inherited Members
Public Attributes inherited from ApiBase
const	PARAM_RANGE_ENFORCE = 'api-param-range-enforce'
	(boolean) Inverse of IntegerDef::PARAM_IGNORE_RANGE

const	PARAM_DFLT = ParamValidator::PARAM_DEFAULT

const	PARAM_ISMULTI = ParamValidator::PARAM_ISMULTI

const	PARAM_TYPE = ParamValidator::PARAM_TYPE

const	PARAM_MAX = IntegerDef::PARAM_MAX

const	PARAM_MAX2 = IntegerDef::PARAM_MAX2

const	PARAM_MIN = IntegerDef::PARAM_MIN

const	PARAM_ALLOW_DUPLICATES = ParamValidator::PARAM_ALLOW_DUPLICATES

const	PARAM_DEPRECATED = ParamValidator::PARAM_DEPRECATED

const	PARAM_REQUIRED = ParamValidator::PARAM_REQUIRED

const	PARAM_SUBMODULE_MAP = SubmoduleDef::PARAM_SUBMODULE_MAP

const	PARAM_SUBMODULE_PARAM_PREFIX = SubmoduleDef::PARAM_SUBMODULE_PARAM_PREFIX

const	PARAM_ALL = ParamValidator::PARAM_ALL

const	PARAM_EXTRA_NAMESPACES = NamespaceDef::PARAM_EXTRA_NAMESPACES

const	PARAM_SENSITIVE = ParamValidator::PARAM_SENSITIVE

const	PARAM_DEPRECATED_VALUES = EnumDef::PARAM_DEPRECATED_VALUES

const	PARAM_ISMULTI_LIMIT1 = ParamValidator::PARAM_ISMULTI_LIMIT1

const	PARAM_ISMULTI_LIMIT2 = ParamValidator::PARAM_ISMULTI_LIMIT2

const	PARAM_MAX_BYTES = StringDef::PARAM_MAX_BYTES

const	PARAM_MAX_CHARS = StringDef::PARAM_MAX_CHARS

const	PARAM_HELP_MSG = 'api-param-help-msg'
	(string\|array\|Message) Specify an alternative i18n documentation message for this parameter.

const	PARAM_HELP_MSG_APPEND = 'api-param-help-msg-append'
	((string\|array\|Message)[]) Specify additional i18n messages to append to the normal message for this parameter.

const	PARAM_HELP_MSG_INFO = 'api-param-help-msg-info'
	(array) Specify additional information tags for the parameter.

const	PARAM_VALUE_LINKS = 'api-param-value-links'
	Deprecated and unused.

const	PARAM_HELP_MSG_PER_VALUE = 'api-param-help-msg-per-value'
	((string\|array\|Message)[]) When PARAM_TYPE is an array, or 'string' with PARAM_ISMULTI, this is an array mapping parameter values to help message specifiers (to be passed to ApiBase::makeMessage()) about those values.

const	PARAM_TEMPLATE_VARS = 'param-template-vars'
	(array) Indicate that this is a templated parameter, and specify replacements.

const	ALL_DEFAULT_STRING = '*'
	(string\|array\|Message) Specify an alternative i18n documentation message for this parameter.

const	LIMIT_BIG1 = 500
	Fast query, standard limit.

const	LIMIT_BIG2 = 5000
	Fast query, apihighlimits limit.

const	LIMIT_SML1 = 50
	Slow query, standard limit.

const	LIMIT_SML2 = 500
	Slow query, apihighlimits limit.

const	GET_VALUES_FOR_HELP = 1
	getAllowedParams() flag: When this is set, the result could take longer to generate, but should be more thorough.

Static Protected Member Functions inherited from ApiBase
static	dieDebug ( $method, $message)
	Internal code errors should be reported with this method.

Detailed Description

Class to output help for an API module.

Since: 1.25 completely rewritten

Definition at line 46 of file ApiHelp.php.

Constructor & Destructor Documentation

◆ __construct()

ApiHelp::__construct	(	ApiMain	$main,
			$action,
		SkinFactory	$skinFactory )

Parameters

ApiMain	$main
string	$action
SkinFactory	$skinFactory

Definition at line 54 of file ApiHelp.php.

Member Function Documentation

◆ execute()

ApiHelp::execute ( )

Evaluates the parameters, performs the requested query, and sets up the result.

Concrete implementations of ApiBase must override this method to provide whatever functionality their module offers. Implementations must not produce any output on their own and are not expected to handle any errors.

The execute() method will be invoked directly by ApiMain immediately before the result of the module is output. Aside from the constructor, implementations should assume that no other methods will be called externally on the module before the result is processed.

The result data should be stored in the ApiResult object available through getResult().

Reimplemented from ApiBase.

Definition at line 63 of file ApiHelp.php.

References $params, $path, ApiBase\extractRequestParams(), getContext(), MediaWiki\Context\ContextSource\getLanguage(), ApiBase\getMain(), ApiBase\getModuleFromPath(), ApiBase\getModuleName(), and ApiBase\getResult().

◆ fixHelpLinks()

static ApiHelp::fixHelpLinks	(	$html,
		$helptitle = null,
		$localModules = [] )

static

Replace Special:ApiHelp links with links to api.php.

Parameters

string	$html
string \| null	$helptitle	Title to link to rather than api.php, must contain '$1'
array	$localModules	Keys are modules to link within the current page, values are ignored

Returns: string

Definition at line 221 of file ApiHelp.php.

References wfAppendQuery(), and wfScript().

◆ getAllowedParams()

ApiHelp::getAllowedParams ( )

Returns an array of allowed parameters (parameter name) => (default value) or (parameter name) => (array with PARAM_* constants as keys) Don't call this function directly: use getFinalParams() to allow hooks to modify parameters as needed.

Some derived classes may choose to handle an integer $flags parameter in the overriding methods. Callers of this method can pass zero or more OR-ed flags like GET_VALUES_FOR_HELP.

Stability: stable: to override

Returns: array

Reimplemented from ApiBase.

Definition at line 709 of file ApiHelp.php.

◆ getCustomPrinter()

ApiHelp::getCustomPrinter ( )

If the module may only be used with a certain format module, it should override this method to return an instance of that formatter.

A value of null means the default format will be used.

Note: Do not use this just because you don't want to support non-json formats. This should be used only when there is a fundamental requirement for a specific format.

Stability: stable: to override

Returns: ApiFormatBase|null An instance of a class derived from ApiFormatBase, or null

Reimplemented from ApiBase.

Definition at line 698 of file ApiHelp.php.

References $params, ApiBase\extractRequestParams(), and ApiBase\getMain().

◆ getExamplesMessages()

ApiHelp::getExamplesMessages ( )

protected

Returns usage examples for this module.

Return value has query strings as keys, with values being either strings (message key), arrays (message key + parameter), or Message objects.

Do not call this base class implementation when overriding this method.

Since: 1.25

Stability: stable: to override

Returns: array

Reimplemented from ApiBase.

Definition at line 722 of file ApiHelp.php.

◆ getHelp()

static ApiHelp::getHelp	(	IContextSource	$context,
			$modules,
		array	$options )

static

Generate help for the specified modules.

Help is placed into the OutputPage object returned by $context->getOutput().

Recognized options include:

headerlevel: (int) Header tag level
nolead: (bool) Skip the inclusion of api-help-lead
noheader: (bool) Skip the inclusion of the top-level section headers
submodules: (bool) Include help for submodules of the current module
recursivesubmodules: (bool) Include help for submodules recursively
helptitle: (string) Title to link for additional modules' help. Should contain $1.
toc: (bool) Include a table of contents

Parameters

IContextSource	$context
ApiBase[] \| ApiBase	$modules
array	$options	Formatting options (described above)

Definition at line 142 of file ApiHelp.php.

References MediaWiki\Context\IContextSource\getConfig(), MediaWiki\Context\IContextSource\getLanguage(), ApiBase\getModulePath(), MediaWiki\Context\IContextSource\getOutput(), MessageLocalizer\msg(), and MediaWiki\Parser\ParserOutput\setTOCData().

Referenced by MediaWiki\Specials\SpecialApiHelp\execute().

◆ getHelpUrls()

ApiHelp::getHelpUrls ( )

Return links to more detailed help pages about the module.

Since: 1.25, returning boolean false is deprecated

Stability: stable: to override

Returns: string|array

Reimplemented from ApiBase.

Definition at line 737 of file ApiHelp.php.

◆ isReadMode()

ApiHelp::isReadMode ( )

Indicates whether this module requires read rights.

Stability: stable: to override

Returns: bool

Reimplemented from ApiBase.

Definition at line 694 of file ApiHelp.php.

◆ shouldCheckMaxlag()

ApiHelp::shouldCheckMaxlag ( )

Indicates if this module needs maxlag to be checked.

Stability: stable: to override

Returns: bool

Reimplemented from ApiBase.

Definition at line 690 of file ApiHelp.php.

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

includes/api/ApiHelp.php

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ execute()

◆ fixHelpLinks()

◆ getAllowedParams()

◆ getCustomPrinter()

◆ getExamplesMessages()

◆ getHelp()

◆ getHelpUrls()

◆ isReadMode()

◆ shouldCheckMaxlag()