Help:Transclusion

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Detailed reference page on this subject: Help:Template.

Transclusion refers to the process by which the entire contents of a page are inserted on to another page for the sake of convenience, speed of editing and/or tidiness of the source wikitext. The process works by applying the title of the page to be transcluded, with two braces {{}} on either side and sometimes a colon.

Templates[edit]

Pages created for the sole purpose of being useful to transclude are known as templates. Templates come in many varieties; some templates constitute generic messages that can be quickly and easily sent, while others contain pieces of text that are used in mass quantities. The use for these quick pieces of text or code are almost limitless, and there are literally hundreds of thousands in current use all over Wikimedia. They have their own namespace, Template:.

The braces assume, and it is implied by default, that the template namespace is to be transcluded; i.e., the syntax assumes that {{FOO}} refers to Template:FOO. However, all kinds of pages can be transcluded in every namespace so long as the namespace is specified: e.g., {{Meta:Help}} would be a viable and workable transclusion. Because of template: vs (main) confusion when transcluding, pages with no namespace prefix, as this one (Transclusion), are transcluded with a colon preceding the page name, like this: {{:Transclusion}}.

Link that is created[edit]

It is important to remember that transclusion creates a very real and direct link between the target page and the transcluded one; when the source page is changed, the transcluded text is changed with it. This especially applies to templates that are in mass use; many pages can be altered very radically by a small change. The volatility of this situation should be considered when making changes.

It is possible to see what pages are transcluded on a page, and where a page is transcluded, by use of the "What links here" link in the toolbox in the left hand panel.

Examples[edit]

The following is an example of transclusion {{Information thread}}:

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July 2018[edit]

Mediawiki-logo.png July 23: Editing of sitewide CSS/JS will soon be restricted to a new user group, to improve the security of MediaWiki and the Wikimedia projects. The new group will be managed by the local communities, who need to set up the appropriate policy. To find out more and give feedback, see Creation of separate user group for editing sitewide CSS/JS.

June 2018[edit]

Wikimedia-logo.svg June 12 - July 2: The Strategy core team invites everyone interested in strategic conversations and competent in selected thematic areas to join the Working Groups. Up to 135 persons representing diverse perspectives and roles within the Wikimedia movement will be selected.

May 2018[edit]

Wikimedia-logo.svg May 3 - July 15: The Wiki4MediaFreedomcontest, sponsored by the Osservatorio Balcani e Caucaso and focused on Eastern Europe, has started.

April 2018[edit]

Wikimedia-logo.svg April 1 - May 15: The draft Annual Plan of the Wikimedia Foundation is open for comments.

January 2018[edit]

Wikimedia-logo.svg 15: The Community Capacity Map experiment is announced. Details in the about page.


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Viewing that source will show that while that thread is complex, with a fair bit of text and a lot of use of code, all it takes is a simple application of {{Information thread}} here to transclude accurately, how it displays there. This is very handy for managing information on the wiki.

See also[edit]