Thread:Project:Support desk/How to check from a template if a page is in a given category?/reply

Not really no (possible to write extension to do that, but no such extension is installed on Wikimedia Wikis at the moment). I suppose DynamicPageList does something kind of close, and might one day be able to do that, but as it stands, cannot.

You could maybe put a book's status in a subpage, (Aka Index:Book/status is a page containing just Finished or whatever ) and then use templates to get the value of that and do stuff based on that (possibly including detemining Index:Book's category based on the content of the subpage).