Manual:Extensions/fi

Laajennusten avulla voit parantaa MediaWikin ulkoasua ja toimintaa.


 * Kaikki laajennukset löytyvät tätä luokkaa selaamalla.
 * Järjestelmän ylläpitäjät voivat asentaa (tai poistaa) laajennuksia MediaWiki-asennuksissaan, joita he hallitsevat.
 * Kehittäjät voivat tehdä uusia laajennuksia tai parantaa ja ylläpitää olemassa olevia laajennuksia.

Osaa laajennuksista ylläpitävät MediaWikin kehittäjät, osa taas on ulkopuolisten kehittäjien laatimia. Tämä on johtanut siihen, että laajennuksissa esiintyy usein bugeja, eikä niiden keskinäisestä yhteensopivuudestakaan ole kaikista takuuta. Osaa laajennuksista enää ylläpidetä, eivätkä ne siten toimi MediaWikin kaikissa versioissa. Kaikkien laajennusten käyttö (varsinkin epävarmoiksi merkittyjen) ja niistä mahdollisesti käyttäjälle aiheutuva haitta on aina käyttäjän omalla vastuulla. If you are using an extension that requires patches to the core software, be sure to back up your database. This helps avoid the risk of breaking your wiki.



Browsing extensions
You can browse to see the full range of extensions that have already been written. For information on installing these extensions or writing your own, see below.

Checking installed extensions
Only someone with administration access to the filesystem (and often the database too) on a server can install extensions for MediaWiki, but anyone can check which extensions are active on an instance of MediaWiki by accessing the Special:Version page. For example, these extensions are active in the English Wikipedia.

Popular extensions
There are a number of ways of finding popular extensions.

The first set is those that are bundled with MediaWiki (a list that is reviewed regularly, and to which anyone can suggested an addition).

Extensions that are downloaded from MediaWiki.org via the mechanism have some statistics gathered. The top 15 most downloaded extensions are listed at Special:ExtensionDistributor, and applicable extensions have their download count shown in their infobox. Note that these numbers do not account for alternate ways of installing extensions, such as via Git or Composer.

A third option is to look at 's counts of wikis that extensions are installed on. This has the advantage of representing actual installations and not just downloads (i.e. it queries the wiki's APIs), but it is also (as of 2023) not completely up to date. It also doesn't count installations on private wikis.



Laajennuksen asentaminen
MediaWiki is ready to accept extensions just after installation is finished. To add an extension follow these steps:


 * 1) Ennen kuin aloitat
 * Many extensions provide instructions designed for installation using Unix commands. You require shell access (SSH) to enter these commands listed on the extension help pages.
 * 1) Lataa laajennuksesi.
 * Extension Distributor helps you to select and download most of the popular extensions.
 * Extensions are usually distributed as modular packages. They generally go in their own subdirectory of .  A list of extensions stored in the Wikimedia Git repository is located at git:mediawiki/extensions. Some extensions don't use version control and are not recommended.
 * Some extensions are also available in bundles, or package repositories.
 * It's recommended to read the README file before installation. It usually contains important info about configuration.
 * 1) Asenna laajennuksesi.
 * Lisää -tiedoston loppuun:
 * This line forces the PHP interpreter to read the extension file, and thereby make it accessible to MediaWiki.
 * Some extensions can conflict with maintenance scripts, for example if they directly access $_SERVER (not recommended).
 * In this case they can be wrapped in the conditional so maintenance scripts can still run.
 * The maintenance script will fail for any extension which requires customized namespaces which is included inside the conditional above such as,.
 * The maintenance script will fail for any extension which requires customized namespaces which is included inside the conditional above such as,.
 * The maintenance script will fail for any extension which requires customized namespaces which is included inside the conditional above such as,.



Laajennuksen päivittäminen
Some extensions require to be updated whenever you update MediaWiki, while others work with multiple versions. To upgrade to a new version of an extension:

Do not remove the extension configuration present in LocalSettings.php Most extensions will mention if this script needs to be run or not. (Perform backup of your data before executing the script). If you don't have command line access, you can also use the web updater.
 * 1) Lataa uusi versio laajennuksesta
 * 1) Replace all the extension files in the  directory with the new files.
 * 1) If the extension requires changes to the MediaWiki database, you will need to run the maintenance script.



Laajennuksen asennuksen poistaminen
Remove the line from LocalSettings.php with the extension name to uninstall it:


 * You must remove any lines pertaining to the configuration of the extension.



Katso myös

 * - Information about translating extensions.
 * Special:ExtensionDistributor - Includes a list of the 15 most downloaded extensions in Wikimedia version control
 * - Information about translating extensions.
 * Special:ExtensionDistributor - Includes a list of the 15 most downloaded extensions in Wikimedia version control
 * Special:ExtensionDistributor - Includes a list of the 15 most downloaded extensions in Wikimedia version control