PHP API: accessing site configuration

Introduction

The PHP API for sites comes in two parts:

  • Accessing the current, resolved site object
  • Finding a site object / configuration via a page or identifier

The first case is relevant when we want to access the site configuration in the current request, for example, if we want to know which language is currently rendered.

The second case is about accessing site configuration options independent of the current request but based on a page ID or a site identifier.

Let us look at both cases in detail.

Accessing the current site object

When rendering the frontend or backend, TYPO3 builds an HTTP request object through a PSR-15 middleware stack and enriches it with information. Part of that information are the objects \TYPO3\CMS\Core\Site\Entity\Site and \TYPO3\CMS\Core\Site\Entity\SiteLanguage. Both objects are available as attributes in the current request object.

Depending on the context, there are two main ways to access them:

  • via the PSR-7 HTTP request object directly - for example in a PSR-15 middleware, an Extbase controller or a user function.
  • via $GLOBALS['TYPO3_REQUEST'] - everywhere you do not have a request object.

Methods:

EXT:my_extension/Classes/MyClass.php
// current site
$site = $request->getAttribute('site');

// current site language
$siteLanguage = $request->getAttribute('language');
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Changed in version 11.3

The Extbase request class implements the PSR-7 \Psr\Http\Message\ServerRequestInterface. Therefore, you can retrieve all needed attributes from the request object.

Finding a site object with the SiteFinder class

When you need to access the site configuration for a specific page ID or by a site identifier, you can use the class \TYPO3\CMS\Core\Site\SiteFinder.

The methods for finding a specific site throw a \TYPO3\CMS\Core\Exception\SiteNotFoundException, if no site was found.

API

class \TYPO3\CMS\Core\Site\ SiteFinder

Is used in backend and frontend for all places where to read / identify sites and site languages.

getAllSites ( bool $useCache = true)

Return a list of all configured sites

param bool $useCache

the useCache, default: true

returntype

array

Returns:

Site[]

getSiteByIdentifier ( string $identifier)

Find a site by given identifier

param string $identifier

the identifier

returntype

TYPO3\CMS\Core\Site\Entity\Site

getSiteByPageId ( int $pageId, array $rootLine = NULL, string $mountPointParameter = NULL)

Traverses the rootline of a page up until a Site was found.

param int $pageId

the pageId

param array $rootLine

the rootLine, default: NULL

param string $mountPointParameter

the mountPointParameter, default: NULL

returntype

TYPO3\CMS\Core\Site\Entity\Site

The Site object

A \TYPO3\CMS\Core\Site\Entity\Site object gives access to the site configuration options.

API

class \TYPO3\CMS\Core\Site\Entity\ Site

Entity representing a single site with available languages

getIdentifier ( )

Gets the identifier of this site, mainly used when maintaining / configuring sites.

returntype

string

getBase ( )

Returns the base URL of this site

returntype

Psr\Http\Message\UriInterface

getRootPageId ( )

Returns the root page ID of this site

returntype

int

getLanguages ( )
returntype

array

getAllLanguages ( )
returntype

array

getLanguageById ( int $languageId)

Returns a language of this site, given by the sys_language_uid

param int $languageId

the languageId

returntype

TYPO3\CMS\Core\Site\Entity\SiteLanguage

getDefaultLanguage ( )
returntype

TYPO3\CMS\Core\Site\Entity\SiteLanguage

getAvailableLanguages ( TYPO3\\CMS\\Core\\Authentication\\BackendUserAuthentication $user, bool $includeAllLanguagesFlag = false, int $pageId = NULL)
param TYPO3\\CMS\\Core\\Authentication\\BackendUserAuthentication $user

the user

param bool $includeAllLanguagesFlag

the includeAllLanguagesFlag, default: false

param int $pageId

the pageId, default: NULL

returntype

array

getErrorHandler ( int $statusCode)

Returns a ready-to-use error handler, to be used within the ErrorController

param int $statusCode

the statusCode

returntype

TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerInterface

getConfiguration ( )

Returns the whole configuration for this site

returntype

array

getSettings ( )
returntype

TYPO3\CMS\Core\Site\Entity\SiteSettings

getAttribute ( string $attributeName)

Returns a single configuration attribute

param string $attributeName

the attributeName

getRouter ( TYPO3\\CMS\\Core\\Context\\Context $context = NULL)

Returns the applicable router for this site. This might be configurable in the future.

param TYPO3\\CMS\\Core\\Context\\Context $context

the context, default: NULL

returntype

TYPO3\CMS\Core\Routing\RouterInterface

The SiteLanguage object

The SiteLanguage object is basically a simple model that represents the configuration options of the site regarding language as an object and provides getters for those properties.

API

class \TYPO3\CMS\Core\Site\Entity\ SiteLanguage

Entity representing a site_language configuration of a site object.

toArray ( )

Returns the SiteLanguage in an array representation for e.g. the usage in TypoScript.

returntype

array

getLanguageId ( )
returntype

int

getLocale ( )
returntype

TYPO3\CMS\Core\Localization\Locale

getBase ( )
returntype

Psr\Http\Message\UriInterface

getTitle ( )
returntype

string

getNavigationTitle ( )
returntype

string

getWebsiteTitle ( )
returntype

string

getFlagIdentifier ( )
returntype

string

getTypo3Language ( )

Returns the XLF label language key, returns "default" when it is "en".

"default" is currently still needed for TypoScript label overloading. For locales like "en-US", this method returns "en_US" which can then be used for XLF file prefixes properly.

returntype

string

getHreflang ( bool $fetchCustomSetting = false)

Returns the RFC 1766 / 3066 language tag for hreflang tags

param bool $fetchCustomSetting

the fetchCustomSetting, default: false

returntype

string

enabled ( )

Returns true if the language is available in frontend usage

returntype

bool

isEnabled ( )

Helper so fluid can work with this as well.

returntype

bool

getFallbackType ( )
returntype

string

getFallbackLanguageIds ( )
returntype

array

The SiteSettings object

New in version 12.1

The site settings can be retrieved using the getSettings() method of the Site object, which returns a SiteSettings object.

The object can be used to access settings either by the dot notation ("flat"), for example:

$redirectStatusCodeForRedirects = (int)$siteSettings->get('redirects.httpStatusCode', 307);
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or by accessing all options for a certain group:

$allSettingsRelatedToRedirects = $siteSettings->get('redirects');
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or even fetching all settings:

$siteSettings->getAll();
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API

class \TYPO3\CMS\Core\Site\Entity\ SiteSettings

Entity representing all settings for a site. These settings are not overlaid with TypoScript settings / constants which happens in the TypoScript Parser for a specific page.

has ( string $identifier)
param string $identifier

the identifier

returntype

bool

isEmpty ( )
returntype

bool

get ( string $identifier, mixed $defaultValue = NULL)
param string $identifier

the identifier

param mixed $defaultValue

the defaultValue, default: NULL

returntype

mixed

getAll ( )
returntype

array

getAllFlat ( )
returntype

array

jsonSerialize ( )
returntype

mixed