I was looking to have a query that displays output differently based on the users' group membership.

I want to display something based on the query like api.php?action=query&list=allusers&augroup=inactive&aulimit=500 where a member is a member of a group it will give result A, and if they are not member of a group, give result B through a {{#switch:}}.

I cannot see a simple way to beyond the api to query for membership, and thought that there may have been stuff based on the use of magic words and parser functions. Am I missing something? If there isn't the means, if one isn't a hacker, how can one get the results from queries dynamically?

Thanks. Regards, Billinghurst