The Multi-Content Revisions project [1] introduced the concept of slots to MediaWiki: instead of a single content, a revision can now contain multiple content slots, each identified by a role name. With Gerrit change 413223 [2], the revision-related query API modules (action=query&prop=revisions, action=query&prop=deletedrevisions, action=query&list=allrevisions, and action=query&list=alldeletedrevisions) are updated to account for that: * They take a new '<prefix>slots' parameter (where <prefix> is one of 'rv', 'drv', 'arv', 'adr') to indicate which roles to return information about. Use '*' to return information about all slots, 'main' to return information about the main slot (which is what was called the content of the revision before multi-content revisions were introduced). When not used, it will default to 'main' and the legacy response format will be used. * Their '<prefix>prop' parameter takes a new value, 'roles', to list roles for which a slot exists in the given revision. * Using '<prefix>prop=content' or '<prefix>prop=contentmodel' without specifiying '<prefix>slots' has been deprecated. * The parameter '<prefix>contentformat' has been deprecated. Clients should be prepared to handle the default format. * Using '<prefix>slots' together with the (already deprecated) parameters '<prefix>expandtemplates', '<prefix>generatexml', '<prefix>parse', '<prefix>diffto', '<prefix>difftotext', '<prefix>difftotextpst', '<prefix>contentformat' and '<prefix>prop=parsetree' results in an error.
Multi-Content Revisions is a work in progress; at this point in time, you are unlikely to find a wiki with pages which have roles other than 'main'. This will change in the next few months. [1] https://www.mediawiki.org/wiki/Multi-Content_Revisions [2] https://gerrit.wikimedia.org/r/c/mediawiki/core/+/413223 -- Gergő Tisza (Tgr) Senior Software Engineer Wikimedia Foundation
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