Extension:Description2/de-formal

This page is a translated version of the page Extension:Description2 and the translation is 9% complete.
MediaWiki extensions manual
Description2
Release status: stable
Implementation Data extraction, Parser extension
Description Provides a meta description tag and adds data to parser output for other extensions to use.
Author(s) Daniel Friesen (DantmanDiskussion)
Latest version 0.4.1
Compatibility policy Master maintains backward compatibility.
MediaWiki >= 1.31.0
Database changes No
License GNU General Public License 2.0 or later
Download
  • $wgEnableMetaDescriptionFunctions
Quarterly downloads 55 (Ranked 108th)
Translate the Description2 extension if it is available at translatewiki.net

The Description2 extension adds a description meta tag for articles automatically based on the content. This functionality appears to have been removed from MediaWiki at some point. There are some situations where description extraction (by entities less sophisticated than Google, like Facebook) will extract the wrong description information from the wiki and use something like the sitenotice as the description for a page instead of its content. This extension also adds the description to the parser output in a way that other extensions can make use of (to say provide description in a different format like Extension:OpenGraphMeta does, or perhaps to use it in article lists on the wiki).

Installation

  • Die Erweiterung herunterladen und die Datei(en) in ein Verzeichnis namens Description2 im Ordner extensions/ ablegen.
    Developers and code contributors should install the extension from Git instead, using:cd extensions/
    git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/Description2
  • Folgenden Code am Ende Ihrer LocalSettings.php -Datei hinzufügen:
    wfLoadExtension( 'Description2' );
    $wgEnableMetaDescriptionFunctions = true;
    
  •   Done – Zu Special:Version in dem Wiki (bei Einstellung auf deutsch nach Spezial:Version) navigieren, um die erfolgreiche Installierung der Erweiterung zu überprüfen.


Extra options

If you set $wgEnableMetaDescriptionFunctions = true; in your LocalSettings.php a {{#description2:}} parser function can be used to control the description outputted for the page and override it with a custom one. You can use these parser extensions like so:

{{#description2:This is a description}}

You can use the description2 parser function instead to provide a description tag you can control with a template's variables.

Algorithm

Description is extracted from the HTML representation of a page:

  1. Remove all ‎<table> elements (and its contents).
  2. Find all ‎<p> elements.
  3. Iterate over those paragraphs, stripping out all HTML tags (see strip_tags()) and trimming whitespace around it.
  4. The first non-empty paragraph (after all previous transformation) is picked as the description.

Things to consider:

  • When using templates at the top of the articles, if you use ‎<div> instead of tables for the template, be sure it doesn't render paragraphs, which otherwise will be used as the description. This may happen if you have several ‎<div> inside the template with newlines.

Siehe auch