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Interwiki linking

From SKYbrary Wiki

Interwiki links are links to pages of other projects, using a prefixed internal link style. Interwiki links make it possible, to link to pages of (e.g.) Wikipedia, Wikibooks, Wikinews etc. or to your wiki-project in different languages (see Manual:Wiki family).

A link like [[Wikipedia:Main Page]] will appear like this: Wikipedia:Main Page and redirect you to Wikipedia's Main Page.

Interwiki links to other projects

Many wiki projects are defined in the database and therefore ready for interwiki linking. The table below shows the most important predefined interwiki links.

prefix direction usage example
commons http://commons.wikimedia.org/wiki/ [[commons:MediaWiki]]
manual http://www.mediawiki.org/wiki/Manual: [[manual:Contents]]
mediazilla http://bugzilla.wikipedia.org/ [[mediazilla:1209]]
meta http://meta.wikimedia.org/wiki/ [[meta:Main Page]]
metawikipedia http://meta.wikimedia.org/wiki/ [[metawikipedia:Main Page]]
mw http://www.mediawiki.org/wiki/ [[mw:Help:Contents]]
wikibooks http://en.wikibooks.org/wiki/ [[wikibooks:Main Page]]
wikimedia http://wikimediafoundation.org/wiki/ [[wikimedia:Main Page]]
wikinews http://en.wikinews.org/wiki/ [[wikinews:Main Page]]
wikipedia http://en.wikipedia.org/wiki/ [[wikipedia:Main Page]]
wikiquote http://en.wikiquote.org/wiki/ [[wikiquote:Main Page]]
wikisource http://sources.wikipedia.org/wiki/ [[wikisource:Main Page]]
wikispecies http://species.wikipedia.org/wiki/ [[wikispecies:Main Page]]
wiktionary http://en.wiktionary.org/wiki/ [[wiktionary:Main Page]]

Adding more interwiki links

For setting up additional interwiki links, it is necessary to edit the wiki database. Go to table interwiki and add a new line (usually done with phpMyAdmin):

  • iw_prefix: choose a prefix, which is used for interwiki linking, e.g. "wikipedia" for linking to Wikipedia
  • iw_url: enter the project's URL, e.g. http://en.wikipedia.org/wiki/$1 for Wikipedia. Don't forget the $1 as it is replaced with the article's name you are linking to ([[Wikipedia:Main Page]] links to http://en.wikipedia.org/wiki/Main_Page).
  • iw_local: if 1, your wiki will redirect even external links of the form iw_prefix:title, not only those from its own pages. you need this if you want to use the redirect functionality from outside your wiki or other wikis use your transwiki functions for nested transwiki links (like http://en.wikipedia.org/wiki/fr:Accueil)
  • iw_trans: "transwiki transclusion" - set to 1 if you want to use pages from the other wiki as templates. You will also need to set $wgEnableScaryTranscluding = true in your LocalSettings.php

Interwiki links to other languages

If you have installed a Wiki family, you can link from an article in English to an article in German (if you have a German project, too). You can set up MediaWiki, to show those links in the sidebar, just below the toolbox.

In your filesystem, there is a subfolder of your MediaWiki installation, called "languages". Go there and have a look at "Names.php" as it contains a list of known languages and their prefixes. E.g. you want to add your German project, search "Names.php" for "Deutsch" and note the prefix "de".

If you know the "right" prefix, edit your database by adding a new line to table interwiki:

  • iw_prefix: language-prefix (e.g. "de" for German), which is listed in "Names.php"
  • iw_url: URL to your wiki-project (e.g. http://de.your-wiki.org/index.php/$1)
  • iw_local: same as above "Adding More"
  • iw_trans: same as above "Adding More"


Now, you can link an article to the same in other languages. Adding [[de:Hauptseite]] on your english Main_Page will create a link "Deutsch" below the toolbox, which leads to the Main_Page of the German wiki (Hauptseite).

Note, that this link is shown in Sidebar's section, only, and not inside of the article. If you want to create a link inside of the text, you have to add a colon previous to the prefix: [[:de:Hauptseite]].