https://moasspedia.org/w/index.php?action=history&feed=atom&title=Module%3AIs_instance 2026-04-17T19:55:54Z Revision history for this page on the wiki MediaWiki 1.37.2 https://moasspedia.org/w/index.php?title=Module:Is_instance&diff=2124&oldid=prev 2022-04-02T21:41:18Z

<p>check that snaktype=value</p> <p><b>New page</b></p><div>local p = {};<br /> <br /> local function checklayer(depth) -- check subclasses of items at current depth<br /> checklist[depth+1] = {} -- setup next layer of table<br /> local j = 0<br /> for j = 1,#checklist[depth] do -- loop over items at current depth<br /> local property<br /> if depth == 1 then<br /> property = &quot;P31&quot; -- use P31 for depth 1<br /> else<br /> property = &quot;P279&quot; -- use P279 for depths 2+<br /> end<br /> local subclasses = mw.wikibase.getBestStatements(checklist[depth][j],property) -- get P31 or P279 statements<br /> for i,statement in ipairs(subclasses) do -- loop through items at next depth<br /> if statement.mainsnak.snaktype == &#039;value&#039; then<br /> local newitem = statement.mainsnak.datavalue.value.id<br /> if newitem == value then<br /> isInstance = true<br /> else<br /> checklist[depth+1][#checklist[depth+1]+1] = newitem -- add item to next depth of checklist table<br /> end<br /> end<br /> end<br /> end<br /> return isInstance<br /> end<br /> <br /> function p.main(frame)<br /> local args = frame.args<br /> local pargs = frame:getParent().args<br /> value = args.value or pargs.value<br /> local qid = args.qid or pargs.qid or &quot;&quot;<br /> if qid == &quot;&quot; then<br /> qid = mw.wikibase.getEntityIdForCurrentPage()<br /> end<br /> if not qid then<br /> return 0<br /> end<br /> checklist = {{qid}}<br /> local md = args.maxdepth or pargs.maxdepth<br /> if md then<br /> maxdepth = tonumber(md)<br /> else<br /> maxdepth = 5<br /> end<br /> depth = 0 -- current depth<br /> isInstance = false -- assume false until match found<br /> while not isInstance and depth&lt;maxdepth do<br /> depth = depth+1<br /> checklayer(depth)<br /> end<br /> if not isInstance then<br /> depth = 0 -- indicates not isInstance<br /> end<br /> return depth -- return depth that item was found<br /> end<br /> <br /> return p</div>

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