Module:Authority control

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This Lua module is used on approximately 2,000,000 pages, or roughly 127632% of all pages.
To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them.

This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.

Lua error in Module:Lua_banner at line 112: attempt to index field 'edit' (a nil value). This module contains the code of the {{Authority control}} and {{Pages with authority control identifiers}} templates.

Parameters, Wikidata properties, and tracking categories

Lua error at line 5: data for mw.loadData contains unsupported data type 'function'.

Additional tracking categories

This module also implements the following hidden tracking categories:

Category:Pages with red-linked authority control categories (0) – error category to identify missing categories
Category:Articles with suppressed authority control identifiers (0) – tracking only (no error)
Category:Pages using authority control with parameters (0) – migrate IDs to Wikidata, if possible (no error)
Category:Pages using authority control with parameters different on Wikidata (0) – determine/remove incorrect IDs & migrate to Wikidata
Category:Pages using authority control with parameters all matching Wikidata (0) – template parameters may safely be removed

State parameter

require('strict')
local p = {}
local arg = mw.getCurrentFrame().args.config
local configfile = 'Module:Authority control/config' .. (arg and arg~='' and ('/' .. arg) or '')
local config = mw.loadData(configfile)
local title = mw.title.getCurrentTitle()
local namespace = title.namespace
local testcases = title.subpageText == config.i18n.testcases

local function needsAttention(sortkey)
	return '[[' .. config.i18n.category .. ':' .. config.i18n.attentioncat .. '|' .. sortkey .. title.text .. ']]'
end

local function addCat(cat,sortkey)
	if cat and cat ~= '' and (namespace == 0 or namespace == 14 or testcases) then
		local redlinkcat = ''
		if testcases == false then
			local success, exists = pcall(function() return mw.title.new(cat, 14).exists end)
			if success and not exists then 
				redlinkcat = needsAttention('N')
			end
		end
		if sortkey then
			cat = '[[' .. config.i18n.category .. ':'..cat..'|' .. sortkey .. title.text .. ']]'
		else
			cat = '[[' .. config.i18n.category .. ':'..cat..']]'
		end
		cat = cat .. redlinkcat
		return cat
	else
		return ''
	end
end

local function getCatForId(id,faulty)
	local cat = string.format(
		config.i18n.cat,
		(faulty and config.i18n.faulty..' ' or '') .. id
	)
	return addCat(cat)
end

local function getIdsFromWikidata(qid,property)
	local function getquals(statement,qualid)
		if statement.qualifiers and statement.qualifiers['P'..qualid] then
			return mw.wikibase.renderSnak(statement.qualifiers['P'..qualid][1])
		else
			return false
		end
	end
	local ids = {}
	if qid then
		for _, statement in ipairs(mw.wikibase.getBestStatements(qid,property)) do
			if statement.mainsnak.datavalue then
				local val = statement.mainsnak.datavalue.value
				if val then
					local namedas = getquals(statement,1810) or getquals(statement,742) or ''
					table.insert(ids,{id=val,name=namedas})
				end
			end
		end
	end
	return ids
end

local _makelink = function(conf,val,nextid,qid) --validate values and create a link
	local function tooltip(text,label)
		if label and label~='' then
			return mw.getCurrentFrame():expandTemplate{title = "Tooltip", args = {text,label}}
		else
			return text
		end
	end
	local link
	if nextid==1 then
		if conf.prefix then
			link = '*' .. conf.prefix .. '\n**'
		else
			link = '*'
		end
	else
		link = '\n**'
	end
	local valid_value = false
	if conf.customlink then -- use function to validate and generate link
		local label = nextid>1 and nextid
		local newlink= require(config.auxiliary)[conf.customlink](val.id,label)
		if newlink then
			link = link .. newlink
			valid_value = true
		end
	else
		if conf.pattern then -- use pattern to determine validity if defined
			valid_value = string.match(val.id,'^'..conf.pattern..'$')
		elseif conf.patterns then
			for _,pattern in ipairs(conf.patterns) do
				valid_value = val.id:match('^'..pattern..'$')
				if valid_value then break end
			end
		elseif conf.valid then -- otherwise use function to determine validity
			valid_value = require(config.auxiliary)[conf.valid](val.id)
		else -- no validation possible
			valid_value = val.id
		end
		if valid_value then
			local newlink
			local label = conf.label
			if not label or nextid>1 then
				label = tostring(nextid)
			end
			if conf.link then
				valid_value = valid_value:gsub('%%', '%%%%')
				newlink = '[' .. mw.ustring.gsub(conf.link,'%$1',valid_value) .. ' ' .. label .. ']'
			else
				newlink = valid_value
			end
			link = link .. '<span class="uid">'..tooltip(newlink,val.name)..'</span>'
		end
	end
	if valid_value then
		link = link .. getCatForId(conf.category or conf[1])
	else
		--local preview = require("Module:If preview")
		local wdlink = qid and '[[:wikidata:' .. qid .. '#P' .. conf.property .. ']]' or ''
		local tooltip = string.format(
			config.i18n.idnotvalid,
			conf[1],
			val.id
		)
		link = link .. '[[File:' .. config.i18n.warningicon .. '|20px|frameless|link=' .. wdlink .. '|' .. tooltip .. '.]]'
		if conf.errorcat then
			link = link .. addCat(conf.errorcat)
		else
			link = link .. getCatForId(conf.category or conf[1],true)
		end
		link = link .. addCat(config.i18n.allfaultycat,conf[1])-- .. preview._warning({'The '..conf[1]..' id '..val..' is not valid.'})
	end
	return link
end

--[[==========================================================================]]
--[[                                   Main                                   ]]
--[[==========================================================================]]
function p.authorityControl(frame)
	local function resolveQID(qid)
		if qid then
			qid = 'Q'..mw.ustring.gsub(qid, '^[Qq]', '')
			if mw.wikibase.isValidEntityId(qid) and mw.wikibase.entityExists(qid) then
				local sitelink = mw.wikibase.getSitelink(qid)
				if sitelink then
					return mw.wikibase.getEntityIdForTitle(sitelink) or mw.wikibase.getEntity(qid).id
				end
				return mw.wikibase.getEntity(qid).id
			end
		end
	end
	local conf = config.config
	local parentArgs = frame:getParent().args
	local auxCats = ''
	local rct = false -- boolean to track if there are any links to be returned
	local qid,topic
	local wikilink = function(qid,hideifequal)
		local label,sitelink = mw.wikibase.getLabel(qid),mw.wikibase.getSitelink(qid)
		if label then
			if sitelink then
				local target = mw.title.new(sitelink)
				if target==title or (target.isRedirect and target.redirectTarget==title) then -- do not link
					return label
				else -- make wikilink to article
					return '[[' .. sitelink .. '|' .. label .. ']]'
				end
			else
				return label
			end
		else
			auxCats = auxCats .. needsAttention('L')
			return qid
		end
	end
	if namespace == 0 then
		qid = mw.wikibase.getEntityIdForCurrentPage()
	end
	if qid then -- article is connected to Wikidata item
		if parentArgs.qid and (resolveQID(parentArgs.qid) ~= qid) then -- non-matching qid parameter
			auxCats = auxCats .. needsAttention('D')
		end
	else -- page is not connected to any Wikidata item
		qid = resolveQID(parentArgs.qid) -- check qid parameter if no wikidata item is connected
		if qid then -- qid parameter is valid, set topic to display
			topic = mw.wikibase.getLabel(qid)
			if topic then
				if mw.ustring.lower(title.subpageText) == mw.ustring.lower(topic) then -- suppress topic display if subpagename equals topic up to case change
					topic = nil
				end
				if topic and mw.wikibase.getSitelink(qid) then -- make wikilink to article
					topic = '[[' .. mw.wikibase.getSitelink(qid) .. '|' .. topic .. ']]'
				end
			else
				auxCats = auxCats .. needsAttention('L')
			end
		elseif parentArgs.qid and parentArgs.qid~='' then -- invalid qid has been supplied, add to tracking cat
			auxCats = auxCats .. needsAttention('Q')
		end
	end
	local qids = {} -- setup any additional QIDs
	if parentArgs.additional=='auto' and qid then  -- check P527 for parts to add additional qids
		local checkparts = function(property)
			local parts = mw.wikibase.getBestStatements(qid,property)
			if parts then
				for _,part in ipairs(parts) do
					if part.mainsnak.datavalue and part.mainsnak.datavalue.value.id then
						local resolvedqid = resolveQID(part.mainsnak.datavalue.value.id)
						if resolvedqid then
							table.insert(qids,resolvedqid)
		end end end end end
		for _,part in ipairs(config.auto_additional) do
			checkparts('P'..tostring(part))
		end
	elseif parentArgs.additional and parentArgs.additional ~= '' then
		for _,v in ipairs(mw.text.split(parentArgs.additional,"%s*,%s*")) do
			v = resolveQID(v)
			if v then
				if v == qid then -- duplicate of qid parameter
					auxCats = auxCats .. needsAttention('R')
				end
				table.insert(qids,v)
			else -- invalid QID specified
				auxCats = auxCats .. needsAttention('A')
			end
		end
	end

	local sections = {}
	local localparams = false
	local numsections = 0
	for _,_ in ipairs(config.sections) do numsections = numsections + 1 end
	for _ = 1,#qids+numsections do table.insert(sections,{}) end
	local qslink = '' -- setup link to add using QuickStatements

	-- check which identifiers to show/suppress in template
	local show = {} -- setup list
	local showall = true
	local function stripP(pid)
		if pid:match("^[Pp]%d+$") then
			pid = mw.ustring.gsub(pid,'[Pp]','') --strip P from property number
		end
		if pid:match("^%d+$") then
			return tonumber(pid)
		end
	end
	local function addshowlist(list)
		if list and list ~= '' then
			for _,v in ipairs(mw.text.split(string.lower(list),"%s*,%s*")) do
				local vprop = stripP(v)
				if vprop then -- e.g. show=P214 to show one particular property
					show[vprop] = true
				else -- e.g. show=arts to use whitelist
					if config.whitelists[v] then
						for _,w in ipairs(config.whitelists[v].properties) do
							show[w] = true
						end
					end
				end
			end
			showall = false
		end
	end
	addshowlist(frame.args.show) -- check show= parameter on wrapper template
	addshowlist(parentArgs.show or parentArgs.country) -- check show parameter on article template
	if parentArgs.suppress then
		local suppresslist = mw.text.split(parentArgs.suppress,"%s*,%s*") -- split parameter by comma
		for _,v in ipairs(suppresslist) do
			v = stripP(string.upper(v))
			if v then
				show[v] = false
				auxCats = auxCats .. '[[' .. config.i18n.category .. ':' .. config.i18n.suppressedcat .. ']]'
			else
				auxCats = auxCats .. needsAttention('P')
			end
		end
	end
	
	local function makeSections(qid,addit)
		local tval = {}
		local function parameter_is_used(property)
			local used = false
			if property then
				if tval[property] then
					if tval[property][1] then
						used = true
					end
				elseif tval[property] == false then -- property has been manually suppressed
					used = true
				end
			end
			return used
		end
		for _, params in ipairs(conf) do
			tval[params.property] = getIdsFromWikidata(qid, 'P' .. params.property) -- setup table for values with property number as key
			local showb = true
			if (show[params.property] == nil) and (show[string.upper(params[1])] == nil ) then
				showb = showall -- if not specified then depends on showall
			elseif (show[params.property] == false) or (show[string.upper(params[1])] == false) then -- if either are false then id will be suppressed
				showb = false
			end
			if not showb then
				tval[params.property] = false -- indicates the identifier is suppressed
			elseif not addit then
				local val = parentArgs[mw.ustring.lower(params[1])] or parentArgs[params[1]]
				if val and val~='' then -- add local parameter to list if not already in
					localparams = true
					local bnew = true
					for _, w in pairs(tval[params.property]) do
						if val == w.id then
							bnew = false
						end
					end
					if bnew then -- add new value to table
						if qid then
							qslink = qslink .. '%7C%7C' .. qid .. '%7CP' .. params.property .. '%7C%22' .. mw.uri.encode(val,"PATH") .. '%22%7CS143%7CQ328'
						end
						table.insert(tval[params.property],{id=val,name=''})
					end
				end
			end
			local suppress = false
			if params.suppressedbyproperty then
				for _,sc in ipairs(params.suppressedbyproperty) do
					if parameter_is_used(sc) then
						suppress = true
					end
				end
			end
			if tval[params.property] ~= false and not suppress then
				local tlinks = {} -- setup table for links
				local nextIdVal = 1
				local row = ''
				for _,val in ipairs(tval[params.property]) do
					local link = _makelink(params,val,nextIdVal,qid)
					row = row .. link
					table.insert(tlinks,link)
					nextIdVal = nextIdVal + 1
				end
				if nextIdVal>=2 then
					row = row .. '\n'
					table.insert(sections[addit or params.section],row)
					rct = true
				end
			end
		end
	end
	local function pencil(qid)
		if not qid then
			return ''
		end
		local args = { pid = 'identifiers' } -- #target the list of identifiers
		args.qid = qid
		return require('Module:EditAtWikidata')._showMessage(args)
	end

	makeSections(qid,false)
	for c = 1,#qids do
		makeSections(qids[c],numsections+c)
	end

	--configure Navbox
	local outString = ''
	if rct or localparams then -- there is at least one link to display
		local Navbox = require('Module:Navbox')
		local sect,lastsect = 0,0
		local navboxArgs = {
			name  = 'Authority control',
			navboxclass = 'authority-control',
			bodyclass = 'hlist',
			state = parentArgs.state or config.i18n.autocollapse,
			navbar = 'off'
		}
		for c=1,numsections+#qids do
			if #sections[c] ~= 0 then -- section is non-empty
				sect = sect + 1
				lastsect = c
				local sectname
				if c <= numsections then -- regular section
					sectname = config.sections[c].name
				else -- section from additional qid
					local qid = qids[c-numsections]
					sectname = wikilink(qid) .. pencil(qid)
				end
				navboxArgs['group' .. c] = sectname
				navboxArgs['list' .. c] = table.concat(sections[c])
			end
		end
		if localparams then
			lastsect = lastsect + 1
			sect = sect + 1
			navboxArgs['group' .. lastsect] = config.i18n.warning
			local warning = frame:expandTemplate{title = config.i18n.errortemplate, args = {config.i18n.localparams}}
			if qslink ~= '' then
				warning = warning .. ' ' .. config.i18n.movetowd .. '<span class="qs autoconfirmed-show">&#32;[[File:Commons to Wikidata QuickStatements.svg|20px|link=https://quickstatements.toolforge.org/#/v1=' .. qslink .. '|' .. config.i18n.addtowd .. ']]</span>'
			elseif not qid then
				if namespace == 0 then
					warning = warning .. ' ' .. config.i18n.connecttowd
				elseif namespace==14 or namespace==2 or namespace==118 then
					warning = warning .. ' ' .. config.i18n.qidcode
				end
			end
			navboxArgs['list' .. lastsect] = warning
		end
		if topic then -- display in expanded form with topic
			navboxArgs.title = config.i18n.aclink .. ' &ndash; ' .. topic .. pencil(qid)
		elseif sect == 1 then -- special display when only one section
			if lastsect <= numsections then
				if config.sections[lastsect].hidelabelwhenalone then -- no special label when only general or other IDs are present
					navboxArgs['group' .. lastsect] = config.i18n.aclink .. pencil(qid)
				else -- other regular section
					navboxArgs['group' .. lastsect] = config.i18n.aclink .. ': ' .. navboxArgs['group' .. lastsect] .. pencil(qid)
				end
			else -- section from additional qid
				navboxArgs['group' .. lastsect] = config.i18n.aclink .. ': ' .. navboxArgs['group' .. lastsect]
			end
		else -- add title to navbox
			navboxArgs.title = config.i18n.aclink .. pencil(qid)
		end
		outString = Navbox._navbox(navboxArgs)
	end

	if parentArgs.state
		and parentArgs.state~=''
		and parentArgs.state~=config.i18n.collapsed
		and parentArgs.state~=config.i18n.expanded
		and parentArgs.state~=config.i18n.autocollapse then --invalid state parameter
		auxCats = auxCats .. needsAttention('S')
	end
	if testcases then
		auxCats = mw.ustring.gsub(auxCats, '(%[%[)(' .. config.i18n.category .. ')', '%1:%2') --for easier checking
	end

	--out
	outString = outString..auxCats
	if namespace ~= 0 then
		outString = mw.ustring.gsub(outString,'(%[%[)(' .. config.i18n.category .. ':' .. config.i18n.Articles .. ')([^%|%]]+)%|?[^%|%]]*(%]%])','%1:%2%3%4')
		outString = mw.ustring.gsub(outString,'(%[%[)(' .. config.i18n.category .. ':' .. config.i18n.All_articles .. ')([^%|%]]+)%|?[^%|%]]*(%]%])','%1:%2%3%4')
	end
	local check = require('Module:Check for unknown parameters')._check
	local sortkey
	if namespace == 0 then
		sortkey = '*' .. title.text
	else
		sortkey = title.fullText
	end
	outString = outString .. check({
		['unknown'] = '[[' .. config.i18n.category .. ':' .. config.i18n.pageswithparams .. '|' .. sortkey .. ']]',
		['preview'] = config.i18n.previewwarning, 'show', 'country', 'suppress', 'additional', 'qid', 'state'
		}, parentArgs)
	return outString
end

p.makelink = function(conf,val,nextid,qid)
	return _makelink(conf,val,nextid,qid)
end

return p

Parameters, Wikidata properties, and tracking categories

Additional tracking categories

State parameter

See also