Design at 10:44, 20 April 2026

2026-04-20T10:44:49Z

← Older revision		Revision as of 10:44, 20 April 2026
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			-- Module:AuthorsDisplay
			-- Purpose: Display all authors linked to a Wikibase item via P2 (Has author),
			-- along with each author's country from P14 (Has Country)
			-- Usage: {{#invoke:AuthorsDisplay\|main}}

	local p = {}		local p = {}

			--- Main function: Fetches authors from the current page's sitelinked Wikibase item
			-- and renders them in a wiki table with their countries.
			--
			-- @function p.main
			-- @param frame The Lua frame object (contains template arguments)
			-- @return string A wiki table showing authors and their countries, or error message
	function p.main(frame)		function p.main(frame)
	~~local item = frame.args.item or "Q14"~~
	~~local entity = mw.wikibase.getEntity(item)~~

	-- Check if entity exists and has P2 claims		-- Fetch the Wikibase entity linked to the current MediaWiki page
			-- mw.wikibase.getEntity() with no parameter gets the sitelinked item
			local entity = mw.wikibase.getEntity()

			-- Validate: Check if entity exists and has P2 (author) claims
	if not entity or not entity.claims or not entity.claims.P2 then		if not entity or not entity.claims or not entity.claims.P2 then
	return "<i>No authors found.</i>"		return "<i>No authors found.</i>"
	end		end

			-- Extract all P2 (Has author) statements from the entity
	local authors = entity.claims.P2		local authors = entity.claims.P2

			-- Initialize the wiki table with headers
	local output = '{\| class="wikitable" style="border-collapse: collapse;"\n'		local output = '{\| class="wikitable" style="border-collapse: collapse;"\n'
	output = output .. '\|-\n! Author !! Country\n'		output = output .. '\|-\n! Author !! Country\n'

	-- Loop through each P2 ~~claim~~		-- Loop through each author claim in P2
	for _, claim in ipairs(authors) do		for _, claim in ipairs(authors) do
	-- Verify ~~it's an item (~~wikibase-item ~~datatype~~)
			-- Verify this claim is a valid wikibase-item with an actual value
			-- (not a "somevalue" or "novalue" placeholder)
	if claim.mainsnak.datatype == "wikibase-item" and claim.mainsnak.snaktype == "value" then		if claim.mainsnak.datatype == "wikibase-item" and claim.mainsnak.snaktype == "value" then

			-- Extract the item ID of the author (e.g., "Q5")
	local authorId = claim.mainsnak.datavalue.value.id		local authorId = claim.mainsnak.datavalue.value.id

			-- Fetch the full Wikibase entity for this author
	local authorEntity = mw.wikibase.getEntity(authorId)		local authorEntity = mw.wikibase.getEntity(authorId)

			-- Process this author only if the entity was successfully retrieved
	if authorEntity then		if authorEntity then
	-- Get the author's label (~~defaults~~ to item ID if no label)
			-- Get the author's label (human-readable name)
			-- Falls back to the item ID if no label exists
	local authorLabel = authorEntity:getLabel() or authorId		local authorLabel = authorEntity:getLabel() or authorId

	-- Initialize country as "Unknown"		-- Initialize country as "Unknown" (default value)
	local country = "Unknown"		local country = "Unknown"

	-- Try to ~~get~~ P14 (country) from the author ~~item~~		-- Try to retrieve P14 (country) from the author's statements
	if authorEntity.claims and authorEntity.claims.P14 then		if authorEntity.claims and authorEntity.claims.P14 then

			-- Get the first P14 claim (in case there are multiple)
	local countryClaim = authorEntity.claims.P14[1]		local countryClaim = authorEntity.claims.P14[1]

			-- Extract the country value only if it's a string datatype
	if countryClaim and countryClaim.mainsnak.datatype == "string" then		if countryClaim and countryClaim.mainsnak.datatype == "string" then
	country = countryClaim.mainsnak.datavalue.value		country = countryClaim.mainsnak.datavalue.value
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	end		end

	-- ~~Add~~ row ~~to table~~		-- Append a new table row with author label and country
	output = output .. '\|-\n\| ' .. authorLabel .. ' \|\| ' .. country .. '\n'		output = output .. '\|-\n\| ' .. authorLabel .. ' \|\| ' .. country .. '\n'
	end		end
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	end		end

			-- Close the wiki table
	output = output .. '\|}\n'		output = output .. '\|}\n'

			-- Return the formatted wiki table as a string
	return output		return output
	end		end

			-- Return the module table containing the main function
	return p		return p

Design: Created page with "local p = {} function p.main(frame) local item = frame.args.item or "Q14" local entity = mw.wikibase.getEntity(item) -- Check if entity exists and has P2 claims if not entity or not entity.claims or not entity.claims.P2 then return "No authors found." end local authors = entity.claims.P2 local output = '{| class="wikitable" style="border-collapse: collapse;"\n' output = output .. '|-\n! Author !! Country\n'..."

2026-04-20T10:35:48Z

Created page with "local p = {} function p.main(frame) local item = frame.args.item or "Q14" local entity = mw.wikibase.getEntity(item) -- Check if entity exists and has P2 claims if not entity or not entity.claims or not entity.claims.P2 then return "<i>No authors found.</i>" end local authors = entity.claims.P2 local output = '{| class="wikitable" style="border-collapse: collapse;"\n' output = output .. '|-\n! Author !! Country\n'..."

New page

local p = {}

function p.main(frame)
local item = frame.args.item or "Q14"
local entity = mw.wikibase.getEntity(item)

-- Check if entity exists and has P2 claims
if not entity or not entity.claims or not entity.claims.P2 then
return "<i>No authors found.</i>"
end

local authors = entity.claims.P2
local output = '{| class="wikitable" style="border-collapse: collapse;"\n'
output = output .. '|-\n! Author !! Country\n'

-- Loop through each P2 claim
for _, claim in ipairs(authors) do
-- Verify it's an item (wikibase-item datatype)
if claim.mainsnak.datatype == "wikibase-item" and claim.mainsnak.snaktype == "value" then
local authorId = claim.mainsnak.datavalue.value.id
local authorEntity = mw.wikibase.getEntity(authorId)

if authorEntity then
-- Get the author's label (defaults to item ID if no label)
local authorLabel = authorEntity:getLabel() or authorId

-- Initialize country as "Unknown"
local country = "Unknown"

-- Try to get P14 (country) from the author item
if authorEntity.claims and authorEntity.claims.P14 then
local countryClaim = authorEntity.claims.P14[1]
if countryClaim and countryClaim.mainsnak.datatype == "string" then
country = countryClaim.mainsnak.datavalue.value
end
end

-- Add row to table
output = output .. '|-\n| ' .. authorLabel .. ' || ' .. country .. '\n'
end
end
end

output = output .. '|}\n'
return output
end

return p

Module:AuthorsDisplay - Revision history

Design at 10:44, 20 April 2026