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\ and
\TYPO3\. 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- everywhere you do not have a request object.['TYPO3_ REQUEST']
Hint
The first method is preferred, if possible, as
$GLOBALS
was deprecated in TYPO3 v9.2 and will be removed in a future version.
Methods:
// current site
$site = $request->getAttribute('site');
// current site language
$siteLanguage = $request->getAttribute('language');The Extbase request class implements the
PSR-7
\Psr\. 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\.
The methods for finding a specific site throw a
\TYPO3\, if no site was found.
API
- class SiteFinder
-
- Fully qualified name
-
\TYPO3\
CMS\ Core\ Site\ Site Finder
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 $useCache
-
the useCache, default: true
- Returns
-
\Site[]
- getSiteByIdentifier ( string $identifier)
-
Find a site by given identifier
- param $identifier
-
the identifier
- Returns
-
\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 $pageId
-
the pageId
- param $rootLine
-
the rootLine, default: NULL
- param $mountPointParameter
-
the mountPointParameter, default: NULL
- Returns
-
\TYPO3\CMS\ Core\ Site\ Entity\ Site
The
Site object
A
\TYPO3\ object gives access to the site
configuration options.
API
- class Site
-
- Fully qualified name
-
\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.
- Returns
-
string
- getAllLanguages ( )
-
Returns all available languages of this site, even the ones disabled for frontend usages
- Returns
-
array
- getLanguageById ( int $languageId)
-
Returns a language of this site, given by the sys_language_uid
- param $languageId
-
the languageId
- Returns
-
\TYPO3\CMS\ Core\ Site\ Entity\ Site Language
- getAvailableLanguages ( \TYPO3\CMS\Core\Authentication\BackendUserAuthentication $user, bool $includeAllLanguagesFlag = false, ?int $pageId = NULL)
-
- param $user
-
the user
- param $includeAllLanguagesFlag
-
the includeAllLanguagesFlag, default: false
- param $pageId
-
the pageId, default: NULL
- Returns
-
array
- getErrorHandler ( int $statusCode)
-
Returns a ready-to-use error handler, to be used within the ErrorController
- param $statusCode
-
the statusCode
- Returns
-
\TYPO3\CMS\ Core\ Error\ Page Error Handler\ Page Error Handler Interface
The
SiteLanguage object
The
Site 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 SiteLanguage
-
- Fully qualified name
-
\TYPO3\
CMS\ Core\ Site\ Entity\ Site Language
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.
- Returns
-
array
-
- Returns
-
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.
- Returns
-
string
The
SiteSettings object
The site settings can be retrieved using the
get method of the Site
object, which returns a
Site object.
The object can be used to access settings either by the dot notation ("flat"), for example:
$redirectStatusCodeForRedirects = (int)$siteSettings->get('redirects.httpStatusCode', 307);or by accessing all options for a certain group:
$allSettingsRelatedToRedirects = $siteSettings->get('redirects');or even fetching all settings:
$siteSettings->getAll();See Using site configuration in TypoScript and Fluid templates for other means of accessing the site settings.
API
- class SiteSettings
-
- Fully qualified name
-
\TYPO3\
CMS\ Core\ Site\ Entity\ Site Settings
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.