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 backup 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.

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.
 * 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.
 * 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,.



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:


 * 1) Lataa uusi versio laajennuksesta
 * 2) Replace all the extension files in the  directory with the new files. Do not remove the extension configuration present in LocalSettings.php
 * 3) If the extension requires changes to the MediaWiki database, you will need to run the Update.php maintenance script. 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.

Uninstalling an extension
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.
 * If the extension provides any database changes, you must run to remove them.

Katso myös

 * - Information about translating extensions.
 * - Information about translating extensions.
 * - Information about translating extensions.
 * - Information about translating extensions.