Template:If in category

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Checks whether a page is in a category, and returns different output based on the answer.

Template parameters

Parameter		Description	Type	Status
Page	1 page	Page being checked	Page name	required
Category	2 category	Category being checked to see if the page is in it; do not include the prefix	Page name	required
If yes	3 yes	Output if the page is in the category	Content	suggested
If no	4 no	Output if the page is not in the category	Content	suggested

Example

{{If in category|Amastra subsoror|Extinct gastropods|Dead as the dodo|Perhaps it's still alive}} produces Perhaps it's still alive.

Limitations

This template is very expensive.

Only detects categories directly on a page, not those added indirectly through templates.

The above documentation is transcluded from Template:If in category/doc. (edit | history)
Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages.
Add categories to the /doc subpage. Subpages of this template.