Manual:Extensions/ja

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拡張機能とは?
Extensions let you customize how MediaWiki looks and works.

Wiki users can browse through existing extensions or request a new extension. System administrators can install (or remove) extensions on the MediaWiki installations that they manage. Developers can write new extensions or improve or maintain existing extensions.

Search the extensions by keyword(s):
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拡張機能を使用するためのゴールは次の内容によります:


 * 記事を書くためにウィキマークアップを拡張します - 例はCategory:Parser function extensionsとCategory:Parser extensionsをご覧下さい.
 * 特別ページを通して新しいレポーティングと運営上の機能を追加します - 例はCategory:Special page extensionsをご覧下さい.
 * スキンと様々なユーザインターフェイス拡張機能経由でMediaWikiのルックアンドフィールを変更します - 例はSpecial:AllPages/Skin:とCategory:User interface extensionsをご覧下さい.
 * カスタム認証メカニズムを使用してセキュリティを強化します - 例は Category:Authentication and Authorization Extensionsをご覧下さい.

While some extensions are maintained by MediaWiki's developers, others were written by third-party developers. As a result, many have bugs, and they are not all guaranteed to be compatible with each other. Some are unmaintained; not all extensions work on all versions of MediaWiki. Use any extension, especially those tagged as insecure, at your own risk. When using an extension requiring patches to the core MediaWiki code or entries in your database(s), be sure to create a back-up of your database and/or the core MediaWiki code, to avoid the risk of permanently breaking your wiki.

Browsing extensions
あらゆる種類の既に書かれた拡張機能を見るためにCategory:Extensions by categoryをブラウズすることが出来ます. これらの拡張機能をインストールもしくは独自のものを書くための情報については、下記をご覧下さい.

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.

拡張機能をインストールする
MediaWikiはインストールが終わった直後に既に拡張機能を受け入れる用意が出来ています. 拡張機能を追加するために以下のステップに従います:


 * 1) 始める前に
 * いくつかの拡張機能はパッチのインストールが要求されます. それらの多くはunixコマンドの使用によるインストールのために設計された手引きを提供しています. 拡張機能ヘルプページにリスト表示されたこれらのコマンドを入力するためにシェルアクセス(SSH)の権限が要求されることもあります.
 * 1) 拡張機能をダウンロードする.
 * Extension Distributor helps you to select and download most of the popular extensions.
 * 拡張機能は通常モジュールパッケージとして配布されます. それらは一般的に の独自のサブディレクトリに入ります. ウィキメディアの Git リポジトリに保存された拡張機能の一覧は git:mediawiki/extensions にあります. Some extensions are available as source code within [ this wiki] . You may want to automate copying them.
 * Unofficial bundles of the extensions in the Wikimedia Git repository can be found on the toolserver. These bundles are arbitrary snapshots, so keep in mind they might contain a broken version of the extension (just as if you load them from the developer's repository directly).
 * 1) 拡張機能をインストールする.
 * 一般的に、 ファイルの終わりに、(PHPのコードの終わりの区切り文字、" "の上に)、次の行を追加します:
 * この行はPHPインタプリタに拡張機能ファイルを読み込むことを強制し、その結果MediaWikiにアクセス可能にします.
 * 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 importDump.php will fail for any extension which requires customized namespaces which is included inside the conditional above such as Extension:Semantic MediaWiki, Extension:Semantic Forms.



拡張機能のアップグレード
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) Download the new version of the extension
 * 2) Replace all the extension files in the extension/ExtensionName directory with the new files. Do not remove the extension configuration present in LocalSettings.php
 * 3) Depending on the extension, you may have to run the Update.php maintenance script. Most extensions will mention if this script needs to be run or not. (Running the update.php script when its unnecessary will not hurt anything, so if you're unsure don't be afraid to run it). If you don't have command line access, you can also use the web updater.
 * 4) That's all you need to do. In most cases any extension configuration you have in LocalSettings.php will also work with the newer version of the extension.

拡張機能のアンインストール
Extensions are added by adding a line to LocalSettings.php, which basically looks like this:


 * 1) Remove this line and the extension is uninstalled. If you want to, you can (and if you do not want to use this extension in the future you should) remove the files of this extension inside the folder "extensions/".
 * 2) Maybe you also have some other lines in LocalSettings.php, which have to do with the extension you want to remove. Most likely this will be lines, which give certain users the right to access pages, which are provided by the extension. These lines contain the variable "$wgGroupPermissions" and make some settings there. As far as they have to do with rights, which come from the removed extension, you can remove these lines as well.
 * 3) Maybe your extension also has added columns to your database. The updater maintenance/update.php removes them, when you run it, after you have uninstalled the extension.

拡張機能を書く
This complex topic is handled on the developing extensions manual page.

関連項目

 * Category:Extensions
 * Category:Extensions in need of a new maintainer
 * Template:Extension
 * Manual:Developing extensions
 * Manual:Parser functions
 * Manual:Special pages
 * Manual:Tag extensions
 * Project:Extension requests
 * Manual:Translating extensions - Information about translating extensions.