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Εγχειρίδιο: Επεκτάσεις

This page is a translated version of the page Manual:Extensions and the translation is 20% complete.
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Development Tag extensions Parser functions Hooks Special pages Skins Magic words API Content models

Επεκτάσεις για να αλλάξετε το πώς δείχνει και πώς δουλεύει το MediaWiki

While some extensions are maintained by MediaWiki 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. Χρησιμοποιείτε τις επεκτάσεις, και ιδιαίτερα όσες έχουν σημανθεί ως επισφαλείς, με δική σας ευθύνη. 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.

Types of extensions

  Parser tags

Parser tags extend the built-in wiki markup with additional capabilities, whether simple string processing, or full-blown information retrieval.

Learn more about parser tags

  Parser functions

Parser functions are special wiki markup syntax that can 'interact' with other wiki elements in the page, and give a specific output.

Learn more about parser functions


Hooks allow custom code to be executed when some defined event (such as saving a page or a user logging in) occurs.

Learn more about hooks

  Special pages

Special pages are pages that are created by the software on demand to perform a specific function.

Learn more about special pages


Skins allow users to customize the look and feel of MediaWiki.

Learn more about skins

  Magic words

Magic words are a technique for mapping a variety of wiki text strings to a single ID that is associated with a function.

Learn more about magic words


MediaWiki provides an action API, a web service that allows access to some wiki-features like authentication, page operations, and search.

Learn more about the MediaWiki API

  Page content models

The ContentHandler introduced in MediaWiki 1.21 makes it possible for wiki pages to be composed of data other than wikitext, such as JSON or Markdown.

Learn more about content models


MediaWiki provides SessionManager and AuthManager, two authentication-related frameworks to enhance security via custom authentication mechanisms.

Learn more about authentication

Browsing extensions

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

Ελέγχοντας εγκατεστημένες επεκτάσεις

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. Για παράδειγμα αυτές οι επεκτάσεις είναι ενεργές στην Αγγλική Βικιπαιδεια.

Εγκαθιστώντας μια επέκταση

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

  1. Πριν ξεκινήσετε
    Πολλές επεκτάσεις παρέχουν οδηγίες σχεδιασμένες για εγκατάσταση με την χρήση εντολών unix. Χρειάζεστε πρόσβαση φλοιού (SSH) για να εισάγετε εκείνες τις εντολές στις σελίδες βοήθειας των επεκτάσεων.
  2. Κατεβάστε την επέκταση.
    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 $IP /extensions/. 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, composer or package repositories.
  3. Εγκαταστήστε την επέκταση..
    At the end of the LocalSettings.php file, add:
    wfLoadExtension( 'ExtensionName' );
    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 $_SERVER (not recommended).
    In this case they can be wrapped in the conditional so maintenance scripts can still run.
if ( !$wgCommandLineMode ) {
   wfLoadExtension ( 'ExtensionName' );
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 .
Ensure that required permissions are set for extensions!
While this installation procedure is sufficient for most extensions, some require a different installation procedure. Check your extension's documentation for details.
If you want to alter configuration variables in LocalSettings.php, you have to do this typically after including the extension. Otherwise defaults defined in the extension will overwrite your settings.

Αναβαθμίζοντας μια επέκταση

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. Κατεβάστε τη νέα έκδοση της επέκτασης
  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. 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.
Αυτές οι οδηγίες καλύπτουν το 99% των επεκτάσεων. If the specific extension you are upgrading has instructions that differ from these, you should probably follow the specific extension's instructions

Uninstalling an extension

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

wfLoadExtension( 'ExtensionName' );
  • You must remove any lines pertaining to the configuration of the extension.
  • If the extension provides any database changes, you must run update.php to remove them.

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