Help:What links here/fr

Dans la boite à outils de chaque page vous trouverez un lien nommé «  » (ou, plus généralement avec le label MediaWiki:Whatlinkshere), aussi appelé « backlink » (lien arrière 'Qui référence la page affichée ?').

Vue d'ensemble
L'outil , liste les pages du même site qui lient vers une page donnée, avec la possibilité de filtrer un espace de noms spécifique. Pour voir ces informations, cliquez sur le lien  à gauche lorsque vous consultez une page. Les pages qui proposent un lien vers et/ou les pages incluses dans la page données sont listées. Les pages sont triées par identifiant, c-à-d par date de création.

Ces informations viennent de la table et de la table. The pages embedding the given page are marked with the content of MediaWiki:Istemplate ("transclusion" or "inclusion"); for these pages it is not shown whether they also link to the given page. Vous pouvez vous en rendre compte en regardant m:Query#backlinks.

La liste des liens vers un article est très utiles dans différentes situations :


 * Cela donne une indication significative sur la popularité d ela page. Les pages avec de nombreux liens sont supposées être vues plus souvent et devraient être de la meilleure qualité. Les pages avec peu ou aucun liens sont supposées moins populaires.
 * Lorsque le nom ou le sujet d'un article n'est pas explicite, la liste des pages liées précise le contexte. For instance when presented with a stub about John Smith that gives only his date of birth and death, viewing the list of links to the article might reveal that he won a gold medal in the Olympics.
 * Facilite une meilleure disambigüation.

Cette facilité fonctionne également pour une page qui n'existe pas (on peut faire des liens dessus, ce qui permet de savoir utilement, qu'elle est à créer). Le bouton  apparait également sur la page d'édition sur laquelle vous arrivez lorsque vous avez suivi un lien cassé. Ainsi, par exemple, si les pages des films sont liées aux acteurs, on peut connaître les films dans lesquels un acteur a joué même s'il n'existe pas de page concernant cet acteur.

Pour invoquer directement une liste , utilisez w:Special:Whatlinkshere/John Smith ce qui résulte en w:Special:Whatlinkshere/John_Smith.

Limitations et environnement
Ne sont pas listé :


 * Les sous-pages qui affichent un lien automatique vers la page supérieure.
 * les liens du sommaire d'édition

Font partie de la liste :


 * les pages avec #ifexist appliqué à la page donnée (voir )

Dans les cas de liens vers une section ou une ancre quelconque, la cible de l'ancre n'apparait pas. Donc, ne peut afficher la liste des page liées à une section ou une ancre spécifique. Cette fonction est prise en charge par Linksearch par l'ajout d'un "lien externe caché".

Alternatives:

Si cela est voulu, la section peut être découpée. Le contenu peut encore être affiché sur la page originale en faisant la transclusion de la nouvelle page. Alternatively, or in preparaton of splitting off, instead of creating a link to a section one can create a link to a page redirecting to the section. The list of backlinks of the full page is now sorted by exact target, though not listing the names of the target sections but the names of the redirect pages. This also makes it easier to keep the links working when changing the name of a section: only the target of the redirect page has to changed, not the source pages of the links. Note that the redirect message is at the top of the whole page, so typically not visible at the target position. This may be an advantage (the disadvantage of the redirect message cluttering the target is minimal) or a disadvantage. To see the name of the page without scrolling up, note that the browser usually shows it in the window title at the very top, while the address bar shows the name of the redirect page with the name of the section on the target page. See also Help:Section linking and redirects (this link itself is also an example of what has been described).

Also note that if a page's links change due to a change in the template, the backlinks for that page are not updated immediately, but via the job queue.

Redirections
The backlinks feature shows which backlinks are redirects.

The backlinks of the redirect are also shown indented under the redirect, and if they include a redirect, the backlinks of that also (not more).

This makes it a useful tool for finding double redirects, which do not work, and, except in special applications (see below) can better be replaced by redirects to the final target.

For listing just the redirects to e.g. w:Wikipedia:Be bold, use https://en.wikipedia.org/w/api.php?action=query&list=backlinks&bltitle=Wikipedia:Be%20bold&blfilterredir=redirects&bllimit=500 or https://tools.wmflabs.org/redirectviews/?project=en.wikipedia.org&platform=all-access&agent=user&range=latest-20&sort=views&direction=1&view=list&page=Wikipedia:Be_bold

Cas d'inclusion
Whether there is a link from A to C is relevant for backlinks as well as Related changes. If C does not exist, only backlinks are applicable.


 * l'inclusion est listée en tant que telle.
 * A link from A to C counts as such even if the link is not explicit in the wikitext of A, but due to the inclusion of B, which links to C.
 * If A calls B and there is a link in B to C within noinclude tags then B links to C, but A does not.
 * If A calls B and there is a link in B to C within includeonly tags then A links to C, but B does not.
 * If A calls B and B links to a page C that depends on a variable or parameter, then:
 * The question whether A links to C depends on the value of the variable on page A, or the parameter with which A calls B.
 * The question whether B links to C depends on the value of the variable on page B; in the case of a parameter, considered from page B, the page may e.g. not call a valid page name (because it calls one with a name with braces), so B does not link to any valid C, or a name depending on the default value of the parameter.

Thus a link from A to C may be due to the inclusion of B, even when B, considered by itself, does not link to C. Thus, to find out what templates cause pages to link to C, it is not sufficient to check for templates in the backlinks of C.

If some pages link to C due to the inclusion of B, it is more convenient if B is in the list of backlinks of C. One can assure this by putting an appropriate example of usage of B on page B, inside noinclude tags (B includes B, but without recursion).

Otherwise a page like B, which causes pages which include B to link to C, can only be found by looking for pages which directly or indirectly are included in these backlink pages of C.

Exemples :


 * Template:H:f calls Template:h:f . Considered by itself that is Template:H:f Template Related chages of Template:H:f, What links to Template:H:f Template
 * This page Help:What links here links through Template:H:f to Template:H:f Help Related changes of Help:What links here, What links to Template:H:f Help. This page is therefore a backlink of the latter, but Template:H:f is not listed.

Even without a template name depending on a variable or parameter, if page A links to page C due to the inclusion of template B1 which redirects to B2, which links to C, A is in the list of backlinks of C but B1 is not.

Summarizing, for the purpose of backlinks and Related changes, A links to C if there is, in that order, a chain of template calls, a single redirect, template calls, a single redirect, etc., template calls, and a chain of redirects.

If a page is conditionally embedded through #if, #ifeq, #ifexist, #ifexpr, or #switch, it is counted as embedded, even if the condition is not fulfilled

If on page A the name of an embedded page is time-dependent, e.g., currently giving , the "" list of one of the possibly embedded pages shows page A: the current one, or, depending on caching issues, perhaps an older one.

Thus, although the same functionality is obtained with, these methods differ in whether the seven templates all count as embedded, or just one.

In the case of an image, using it in a page is listed in the third section of the image description page, but not in "" of that page

Styles utilisateur
The page body has selector body.mw-special-Whatlinkshere, so we can e.g. use the CSS  to number the backlinks.

Ordre et requête
"" sorts by page id, i.e., by date of creation of the page.

Comparison with m:Query#backlinks and m:Query#embeddedin:

Compare Special:Whatlinkshere/Template:T with https://meta.wikimedia.org/w/query.php?what=backlinks|embeddedin&titles=template:t&bllimit=500&eilimit=500&blfilter=all&eifilter=all

Démonstration des différences :


 * Query sorts by function first (backlinks and inclusions), then by page id, "what links here" sorts by page id.
 * Query distinguishes between B being only included in A, and B also being linked from A.
 * Query does not indicate which backlinks are redirects, and does not include their backlinks.
 * la requête fournit les IDs des pages.

Une autre différence :


 * Query allows restriction to a specified namespace.

using Extension:DynamicPageList, produces backlinks sorted in alphabetic order. Other sorting options are also available.

Liste en-page des liens arrière
You can display all the links to a page directly within a page by embedding the page "Special:Whatlinkshere"; see.

This can also be done using any of the extensions.

Two extensions, and, can be used to make more detailed lists of incoming links, grouped by the specific relationship between the two pages, but only for relationships that are encoded via those extensions.

Rechercher les liens externes vers une page
For a given source wiki we can find the external links to any URL with Special:Linksearch (if installed). Thus, in particular, we can find e.g. pages on the English Wikipedia having an external link to this page or even to an old version, an edit or history page, etc. (provided that the parameter "title" comes first): .

Il n'existe pas de telle fonctionnalité pour les liens inter wiki. This may be a reason to prefer external link style.

Voir aussi

 * Special:Mostlinked - affiche le nombre de liens
 * Special:Mostlinkedtemplates - shows the number of pages in which each template is transcluded, not counting transclusions through redirects