Template:Category if exists/doc

This is a documentation subpage for Template:Category if exists.
It contains usage information, categories and other content that is not part of the original template page.

This template is used on approximately 33,000 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them.

Transclusion count updated automatically (see documentation).

Due to a server limit of 500 "expensive parser function" calls (e.g. #ifexist:, PAGESIZE:, and PAGESINCATEGORY:), this template will only work properly if the page using it has not already exceeded the limit. When the limit is exceeded, the page using this template or module is categorised in Category:Pages with too many expensive parser function calls. (further information)

Shortcut

{{Category ifexist}}

‹See TfM›

This template uses Lua:

Module:If not given or empty

This template outputs a category if the category exists. Otherwise, it returns nothing. It is intended for use in templates.

This template follows category redirects (using {{resolve category redirect}}).

TemplateData

This is the TemplateData documentation for this template used by VisualEditor and other tools; see the monthly parameter usage report for this template.

TemplateData for Category if exists

Outputs a link to a category if it exists; otherwise returns nothing.

Template parameters
This template prefers inline formatting of parameters.
Parameter		Description	Type	Status
Category name	`1`	Category for potential inclusion if it exists. "Category:" prefix is optional. Example Category:Writers	Page name	required
Sort key	`2`	[[WP:SORTKEY]] of the category. Suggested values `*` Example Foo	Line	optional

TemplateData

See also