Help:Categories/ca

Les categories, una funció de programari de MediaWiki, proporcionen índexs automàtics que són útils com taules de contingut.

Podeu categoritzar les pàgines i fitxers mitjançant l'addició d'una o més etiquetes de Categories al text contingut. Aquestes etiquetes creen enllaços a la part inferior de la pàgina que porten a la llista de totes les pàgines d'aquesta categoria, el que fa que sigui fàcil de navegar pels articles relacionats.

Resum
Cadascuna de les pàgines de l'espai de noms Categoria representa a una categoria determinada, una agrupació de pàgines relacionades, i conté un índex de les pàgines de la seva categoria. Per exemple, aquesta pàgina pertany a "Category:Help". Si obriu la "Category:Help" de la pàgina, veureu allà un enllaç a aquesta pàgina.

Quan una pàgina pertany a una o més categories, aquestes categories apareixen a la part inferior de la pàgina (o en la cantonada superior dreta, depenent de l'aparença que s'està utilitzat).

La mateixes pàgines de categoria contenen 2 parts:


 * en el seu començament, una part opcional pot contenir text que es pot editar, com en qualsevol altra pàgina,
 * en el seu final, sempre present i que s'ha generat automàticament, una llista, en ordre alfabètic de totes les pàgines d'aquesta categoria, en forma d'enllaços. (De fet, per ordre ASCII. Mireu Help:Special page).

Per assignar una categoria a una pàgina, simplement afegiu l'enllaç " Category:Nom de la categoria" com a text wiki de la pàgina. El lloc habitual per afegir-la és al final de la pàgina.

Per enllaçar una pàgina de categoria dins d'una pàgina com un enllaç wiki normal (sense afegir la pàgina a la categoria), escriviu en el prefix del nom de l'enllaç dos punts. Per exemple: :Category:No en aquesta categoria

New categories can be created before assigning any page to it, in the same way as any other regular page.

Individual wikis may have their own top-level categories, such as Category:Contents in Wikipedia.

For a complete list of all categories which have at least one page, see Special:Categories.

For a complete list of all created/edited categories, including the ones that don't have any page, see Special:Allpages/Category: (note the colon at the end).

Adding a page to a category
To add a page or uploaded file to a category, simply edit the page and add the following text (where Name is the name of the category you want to add it to).



Any number of     tags may be added to the page and the page will be listed in all of them. tags, along with interwiki language links placed in the sidebar, are usually added at the very bottom of the page for the convenience of other editors.

On a categorized page, categories are displayed in the Categories: box strictly in the order they appear in the wikitext.

If $wgUseCategoryBrowser is set to true, under the first list each category is listed again, breadcrumb-style, with all its parent categories, sorted alphabetically. (At least in MediaWiki 1.18.2) if a category is a subcategory of more than one parent, both hierarchies will be listed, but the tagged category will be stripped off all but one of these. This creates the potential for what appear to be duplicate entries if a category with multiple parents and one of its parents are both tagged on a page. For example suppose Maryanne is a subcategory of both Mary and Anne. If a page tags categories Maryanne and Anne then the Category breadcrumbs will show

Anne Anne Mary -> Maryanne

"Anne" appears to be duplicated, but what is meant is

Anne Anne -> Maryanne Mary -> Maryanne

This is probably a bug, and has been reported in Bug 33614.

Sort key
By default, a page is sorted within a category under the first letter of its name — without the namespace. Also, MediaWiki groups accented characters separately from their unaccented version, so pages starting by À, Á, Ä, will be listed under separate headings, instead of under heading A. (If you have shell access, these defaults can be changed using $wgCategoryCollation.)

A sort key specifies under which letter heading, and where in the category list, the page will appear. You can add a sort key by placing it inside the tag after a pipe character. For example, the tag below will add the page under heading "S".

Sort

Sort keys are case-sensitive, and spaces and other characters are also valid. The order of the sections within a category follows the Unicode sort order. The sort key does not change the page title displayed in the category.

See Help:Sorting for further information on category sorting.

Creating a category page
Categories exist even if their page has not been created, but these categories are isolated from others and serve little purpose for organization or navigation.

A category is created by creating a page in the Category: namespace. A category page can be created the same way as other wiki pages (see Help:Starting a new page); just add " " before the page title.

To avoid extra work, try searching within your wiki before creating a new category. The list of all categories can be found in "" in the "" box of the sidebar.

Unlike other wiki pages, it is not possible to rename (move) a category. It is necessary to create a new category and change the     tag on every page. The new category will not have the older category's page history, which is undesirable if there are many revisions.

Managing the category hierarchy
Categories may belong to other categories in a hierarchy. Since category pages are much like any other page, a     tag may be added to the bottom of a category page.

It is a good idea to organize all categories into a hierarchy with a single top level category. The category structure can take the form of a tree with separate branches, but more often will have a graph structure. Generally, there should be a contiguous chain of parent-child links between each category and the top level category.

Hidden categories
The categories that a page is in are normally listed at the bottom of the page. In Mediawiki 1.13+, a category can be hidden from this list by adding the magic word " " to the category page.

Users can choose to see hidden categories in a separate "" list, by checking "" in the "" section of Special:Preferences.

Hidden categories are automatically added to Category:. This category is specified in the system message MediaWiki:Hidden-category-category.

See also: hidden categories

Linking to a category
To create a link to a category, use a leading colon before the category name (without this colon, the current page would be added to the category):


 * &rarr;    :Help

To change the link text, write the text inside the link tag after a pipe:


 * &rarr; Help category

Redirect pages that redirect to categories must also use the colon, otherwise they will be added to the category instead of redirecting.

Redirecting a category
Like normal wiki pages, category pages can be redirected to other normal or category pages. However, this is not recommended, as pages categorized in redirected categories do not get categorized in the target category (bugzilla:3311). Some Wikimedia sites use a "category redirect" template to mark redirected categories, allowing manual or automated cleanup of pages categorized there.

Tracking categories
Certain syntax issues, such as a broken image link, or too many expensive parser functions, can cause a page to be added to a tracking category. See Help:Tracking categories for details.