View source for Manual:Extensions/fi

<languages/>
{{ExtensionTypes}}
{{TOCRight}}
Laajennusten avulla voit parantaa MediaWikin ulkoasua ja toimintaa.

* Kaikki laajennukset löytyvät [[Special:MyLanguage/Category:Extensions by category|tätä luokkaa selaamalla]]. 
* Järjestelmän ylläpitäjät voivat [[#Installing an extension|asentaa]] (tai poistaa) laajennuksia MediaWiki-asennuksissaan, joita he hallitsevat. 
* Kehittäjät voivat [[Special:MyLanguage/Manual:Developing extensions|tehdä uusia laajennuksia]] tai [[Special:MyLanguage/Category:Unmaintained extensions|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. 
<span lang="en" dir="ltr" class="mw-content-ltr">If you are using an extension that requires patches to the core software, be sure to back up your database.</span>
<span lang="en" dir="ltr" class="mw-content-ltr">This helps avoid the risk of breaking your wiki.</span>

<span id="Types_of_extensions"></span>
== Laajennustyypit ==
{{ContentGrid
|content=

{{InfoCard
|heading = [[File:OOjs_UI_icon_markup.svg|20px]] <span lang="en" dir="ltr" class="mw-content-ltr">Parser tags</span>
|content = <span lang="en" dir="ltr" class="mw-content-ltr">Parser tags extend the built-in wiki markup with additional capabilities, whether simple string processing, or full-blown information retrieval.</span>
|footer  =
→ {{ll|Manual:Tag extensions|2=<span lang="en" dir="ltr" class="mw-content-ltr">Learn more about '''parser tags'''</span>}}
}}

{{InfoCard
|heading = [[File:OOjs UI icon code.svg|20px]] Parserifunktiot
|content = <span lang="en" dir="ltr" class="mw-content-ltr">Parser functions are special wiki markup syntax that can 'interact' with other wiki elements in the page, and give a specific output.</span>
|footer  =
→ {{ll|Manual:Parser functions|2=Lue lisää '''parserifunktioista'''}}
}}

{{InfoCard
|heading = [[File:Plug-in Noun project 4032.svg|20px]] <span lang="en" dir="ltr" class="mw-content-ltr">Hooks</span>
|content = <span lang="en" dir="ltr" class="mw-content-ltr">Hooks allow custom code to be executed when some defined event (such as saving a page or a user logging in) occurs.</span>
|footer  =
→ {{ll|Manual:Hooks|2=<span lang="en" dir="ltr" class="mw-content-ltr">Learn more about '''hooks'''</span>}}
}}

{{InfoCard
|heading = [[File:OOjs UI icon pageSettings.svg|20px]] Toimintosivut
|content = Toimintosivut ovat sivuja, jotka on luotu ohjelmistoon jonkin tietyn toiminnon suorittamiseksi.
|footer  =
→ {{ll|Manual:Special pages|2=Lue lisää '''toimintosivuista'''}}
}}

{{InfoCard
|heading = [[File:OOjs UI icon browser-ltr.svg|20px]] Ulkoasut
|content = Eri ulkoasuvaihtoehdot tarjoavat käyttäjälle mahdollisuuden vaihtaa MediaWikin ulkonäköä ja käyttötuntumaa.
|footer  =
→ {{ll|Manual:Skins|2=Lue lisää '''ulkoasuista'''}}
}}

{{InfoCard
|heading = [[File:OOjs UI icon quotes-ltr.svg|20px]] Taikasanat
|content = <span lang="en" dir="ltr" class="mw-content-ltr">'''Magic words''' are a technique for mapping a variety of wiki text strings to a single ID that is associated with a function.</span>
|footer  =
→ {{ll|Manual:Magic words|2=Lue lisää '''taikasanoista'''}}
}}

{{InfoCard
|heading = [[File:API_-_The_Noun_Project.svg|20px]] {{abbr|Application Programming Interface, ohjelmointirajapinta|API}}
|content = <span lang="en" dir="ltr" class="mw-content-ltr">MediaWiki provides an action API, a web service that allows access to some wiki-features like authentication, page operations, and search.</span>
|footer  =
→ {{ll|API:Main page|2=<span lang="en" dir="ltr" class="mw-content-ltr">Learn more about '''the MediaWiki API'''</span>}}
}}

{{InfoCard
|heading = [[File:OOjs_UI_icon_article-ltr.svg|20px]] Sivun sisältömallit
|content = <span lang="en" dir="ltr" class="mw-content-ltr">The {{ll|ContentHandler}} introduced in {{ll|MediaWiki 1.21}} makes it possible for wiki pages to be composed of data other than wikitext, such as JSON or Markdown.</span>
|footer  =
→ {{ll|Manual:Page content models|2=Lue lisää '''sisältömalleista'''}}
}}

{{InfoCard
|heading = [[File:OOjs_UI_icon_lock.svg|20px]] <span lang="en" dir="ltr" class="mw-content-ltr">Authentication</span>
|content = <span lang="en" dir="ltr" class="mw-content-ltr">MediaWiki provides SessionManager and AuthManager, two authentication-related frameworks to enhance security via custom authentication mechanisms.</span>
|footer  =
→ {{ll|Manual:SessionManager and AuthManager|2=<span lang="en" dir="ltr" class="mw-content-ltr">Learn more about '''authentication'''</span>}}
}}

}}

<div lang="en" dir="ltr" class="mw-content-ltr">
==Finding extensions==
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
===Browsing extensions===
</div>
<span lang="en" dir="ltr" class="mw-content-ltr">You can browse {{ll|Category:Extensions by category}} to see the full range of extensions that have already been written.</span>  
<span lang="en" dir="ltr" class="mw-content-ltr">For information on installing these extensions or writing your own, see below.</span>

<div lang="en" dir="ltr" class="mw-content-ltr">
===Checking installed extensions===
</div>
<span lang="en" dir="ltr" class="mw-content-ltr">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.</span> 
<span lang="en" dir="ltr" class="mw-content-ltr">For example, [[W:Special:Version|these extensions]] are active in the English Wikipedia.</span>

<div lang="en" dir="ltr" class="mw-content-ltr">
=== Popular extensions ===
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
There are a number of ways of finding popular extensions.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
The first set is those that are [[Special:MyLanguage/Bundled extensions and skins|bundled with MediaWiki]] (a list that is reviewed regularly, and to which anyone can [[Special:MyLanguage/Suggestions for extensions to be integrated|suggested an addition]]).
</div>

<span lang="en" dir="ltr" class="mw-content-ltr">Extensions that are downloaded from MediaWiki.org via the {{ll|Extension:ExtensionDistributor|ExtensionDistributor}} mechanism have some statistics gathered.</span>
<span lang="en" dir="ltr" class="mw-content-ltr">The top 15 most downloaded extensions are listed at [[Special:ExtensionDistributor]], and applicable extensions have their download count shown in their infobox.</span>
<span lang="en" dir="ltr" class="mw-content-ltr">Note that these numbers do not account for alternate ways of installing extensions, such as [[Special:MyLanguage/Download from Git#Using Git to download MediaWiki extensions|via Git]] or [[Special:MyLanguage/Composer/For extensions|Composer]].</span>

<span lang="en" dir="ltr" class="mw-content-ltr">A third option is to look at {{ll|WikiApiary}}'s counts of wikis that extensions are installed on.</span>
<span lang="en" dir="ltr" class="mw-content-ltr">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.</span>
<span lang="en" dir="ltr" class="mw-content-ltr">It also doesn't count installations on private wikis.</span>

<span id="Installing_an_extension"></span>
== Laajennuksen asentaminen ==
: ''<span lang="en" dir="ltr" class="mw-content-ltr">For further guidance, see also {{ll|Manual:Extensions/Installation and upgrade}}</span>''

<span lang="en" dir="ltr" class="mw-content-ltr">MediaWiki is ready to accept extensions just after [[Special:MyLanguage/Manual:Installation|installation]] is finished.</span> 
<span lang="en" dir="ltr" class="mw-content-ltr">To add an extension follow these steps:</span>

#'''Ennen kuin aloitat'''
#:<span lang="en" dir="ltr" class="mw-content-ltr">Many extensions provide instructions designed for installation using Unix commands.</span> <span lang="en" dir="ltr" class="mw-content-ltr">You require shell access (SSH) to enter these commands listed on the extension help pages.</span>
#'''Lataa laajennuksesi.'''
#:<span lang="en" dir="ltr" class="mw-content-ltr">[[Special:ExtensionDistributor|Extension Distributor]] helps you to select and download most of the popular extensions.</span>
#:<span lang="en" dir="ltr" class="mw-content-ltr">Extensions are usually distributed as modular packages.</span> <span lang="en" dir="ltr" class="mw-content-ltr">They generally go in their own subdirectory of <code>{{ll|Manual:$IP|$IP}}/extensions/</code>.</span>  <span lang="en" dir="ltr" class="mw-content-ltr">A list of extensions stored in the Wikimedia [[Special:MyLanguage/Gerrit|Git repository]] is located at [[phab:diffusion/MEXT/browse/master/|git:mediawiki/extensions]].</span> <span lang="en" dir="ltr" class="mw-content-ltr">Some extensions [[Special:MyLanguage/Category:Extensions which host their code in-wiki|don't use version control]] and are not recommended.</span>
#:<span lang="en" dir="ltr" class="mw-content-ltr">Some extensions are also available in [[Special:MyLanguage/Software bundles|bundles]], {{ll|composer|composer}} or [[Special:MyLanguage/Comparison of extensions in distributions|package repositories]].</span>
#:<span lang="en" dir="ltr" class="mw-content-ltr">It's recommended to read the README file before installation.</span> <span lang="en" dir="ltr" class="mw-content-ltr">It usually contains important info about configuration.</span>
#'''Asenna laajennuksesi'''
#:Lisää <code>{{ll|Manual:LocalSettings.php|LocalSettings.php}}</code>-tiedoston loppuun:
#:<syntaxhighlight lang="php">
wfLoadExtension( 'ExtensionName' );
</syntaxhighlight>
#:<span lang="en" dir="ltr" class="mw-content-ltr">This line forces the PHP interpreter to read the extension file, and thereby make it accessible to MediaWiki.</span>
#:<span lang="en" dir="ltr" class="mw-content-ltr">Some extensions can conflict with maintenance scripts, for example if they directly access $_SERVER (not recommended).</span> 
#:<span lang="en" dir="ltr" class="mw-content-ltr">In this case they can be wrapped in the conditional so maintenance scripts can still run.</span>
#:<syntaxhighlight lang="php">
if ( !$wgCommandLineMode ) {
   wfLoadExtension ( 'ExtensionName' );
}
</syntaxhighlight>
#: <span lang="en" dir="ltr" class="mw-content-ltr">The maintenance script {{ll|Manual:ImportDump.php|importDump.php}} will fail for any extension which requires customised namespaces which is ''included'' inside the conditional above such as {{ll|Extension:Semantic MediaWiki}}, {{ll|Extension:Page Forms}}.</span>
 
:{{Note|1=<span lang="en" dir="ltr" class="mw-content-ltr">Ensure that required permissions are set for extensions!</span>}}
:{{Note|1=<span lang="en" dir="ltr" class="mw-content-ltr">While this installation procedure is sufficient for most extensions, some require a different installation procedure.</span> <span lang="en" dir="ltr" class="mw-content-ltr">Check your extension's documentation for details.</span>}}
:{{Note|1=<span lang="en" dir="ltr" class="mw-content-ltr">If you want to alter configuration variables in LocalSettings.php, you have to do this typically '''after''' including the extension.</span> <span lang="en" dir="ltr" class="mw-content-ltr">Otherwise defaults defined in the extension will overwrite your settings.</span>}}

<span id="Upgrading_an_extension"></span>
==Laajennuksen päivittäminen==
<span lang="en" dir="ltr" class="mw-content-ltr">Some extensions require to be updated whenever you update MediaWiki, while others work with multiple versions.</span> 
<span lang="en" dir="ltr" class="mw-content-ltr">To upgrade to a new version of an extension:</span>

#Lataa uusi versio laajennuksesta
<div lang="en" dir="ltr" class="mw-content-ltr">
#Replace all the extension files in the <code>extensions/ExtensionName</code> directory with the new files.
</div> <span lang="en" dir="ltr" class="mw-content-ltr">Do not remove the extension configuration present in LocalSettings.php</span>
<div lang="en" dir="ltr" class="mw-content-ltr">
#If the extension requires changes to the MediaWiki database, you will need to run the {{ll|Manual:update.php|update.php}} maintenance script.
</div> <span lang="en" dir="ltr" class="mw-content-ltr">Most extensions will mention if this script needs to be run or not.</span> <span lang="en" dir="ltr" class="mw-content-ltr">(Perform backup of your data before executing the script).</span> <span lang="en" dir="ltr" class="mw-content-ltr">If you don't have command line access, you can also use the [[Special:MyLanguage/Manual:Upgrading#Web_updater|web updater]].</span>

{{Note|1=<span lang="en" dir="ltr" class="mw-content-ltr">These instructions cover 99% of extensions.</span> <span lang="en" dir="ltr" class="mw-content-ltr">If the specific extension you are upgrading has instructions that differ from these, you should probably follow the specific extension's instructions</span>}}

<span id="Uninstalling_an_extension"></span>
==Laajennuksen asennuksen poistaminen==

<div lang="en" dir="ltr" class="mw-content-ltr">
Remove the line from LocalSettings.php with the extension name to uninstall it:
</div>

<syntaxhighlight lang="php">
wfLoadExtension( 'ExtensionName' );
</syntaxhighlight>

<div lang="en" dir="ltr" class="mw-content-ltr">
* You must remove any lines pertaining to the configuration of the extension.
</div>

<span id="See_also"></span>
==Katso myös==
* {{ll|Category:Extensions}}
* {{ll|Template:Extension}}
* {{ll|Manual:Developing extensions}}
* {{ll|Manual:Translating extensions}} - <span lang="en" dir="ltr" class="mw-content-ltr">Information about translating extensions.</span>
* [[Special:ExtensionDistributor]] - <span lang="en" dir="ltr" class="mw-content-ltr">Includes a list of the 15 most downloaded extensions in Wikimedia version control</span>
* [https://extloc.toolforge.org/ extloc - Where are MediaWiki extensions deployed in Wikimedia production?]
* [[API:Siteinfo#Extensions|API:SiteInfo extension information]]

{{Extensions}}

[[Category:Customization techniques{{#translation:}}|{{PAGENAME}}]]
[[Category:Extension creation{{#translation:}}]]