Module:WikidataCheck

Template:WikidataCheck compares a template parameter to a Wikidata property and adds pages using the template to one of three categories: not in, same as, or different from Wikidata. It is powered by the Lua module Module:WikidataCheck.

Usage

To add only articles to the categories: {{WikidataCheck|property=P###|value={{{value|}}}|category=Category prefix}} To add pages in other namespaces to the categories: {{WikidataCheck|property=P###|value={{{value|}}}|category=Category prefix|namespaces=0,14}} To prevent adding pages to a "same as" category: {{WikidataCheck|property=P###|value={{{value|}}}|category=Category prefix|nocatsame=1}} To make comparison case insensitive for "different from" category: {{WikidataCheck|property=P###|value={{{value|}}}|category=Category prefix|ignorecase=1}}

Parameters

Required

• |property= is the P### of the property. The "P" must be uppercase.
• |value= is the value to use from the template. This would be something like {{{id|}}} or {{{id|{{{1|}}}}}}
• |category= is the prefix to use in front of the category names. The categories created are "[prefix] not in Wikidata", "[prefix] same as Wikidata", and "[prefix] different from Wikidata".
  • It is recommended you create these categories with {{hiddencat}} before applying this template.

Optional

• |namespaces= is a comma separated list of the numerical namespaces to apply the template. The default is 0, which is just article space.
• |nocatsame= if set to any value will prevent adding pages to a "same as" category. The "not in" and "different from" categories are still added, where applicable.
• |ignorecase= if set to any value will ignore upper/lower case differences between value in template and value in Wikidata when adding pages to a "different from" category.
• |qid= if specified will check a a different Wikidata item than the current article.
• |onlysourced= if set to "yes" will ignore unsourced Wikidata properties, equivalent to Module:WikidataIB's |onlysourced=yes.

Example

For {{MusicBrainz artist}}, which checks MusicBrainz artist ID (P434), the following code would be added: {{WikidataCheck|property=P434|value={{{mbid|{{{id|{{{1|}}}}}}}}}|category=MusicBrainz artist}} Articles using that template with an ID would be placed in one of the following categories:

• Category:MusicBrainz artist not in Wikidata
• Category:MusicBrainz artist same as Wikidata
• Category:MusicBrainz artist different from Wikidata

See also

• {{Tracks Wikidata}} for use in template documentation
• {{Wikidata tracking category}} for use in hidden tracking categories
• Category:Wikipedia categories tracking data not in Wikidata
• Category:Wikipedia categories tracking data same as Wikidata
• Category:Wikipedia categories tracking Wikidata differences

---

local p = {}
function p.wikidatacheck(frame)
local pframe = frame:getParent()
local config = frame.args -- the arguments passed BY the template, in the wikitext of the template itself
local args = pframe.args -- the arguments passed TO the template, in the wikitext that transcludes the template
local property = config.property
local value = config.value or ""
local catbase = config.category
local namespaces = config.namespaces
local nocatsame = config.nocatsame or ""
local ignorecase = config.ignorecase or ""
local qid = config.qid or ""
local onlysourced = (config.onlysourced == 'yes') or false
local ok = false -- one-way flag to check if we're in a good namespace
local ns = mw.title.getCurrentTitle().namespace
for v in mw.text.gsplit( namespaces, ",", true) do
if tonumber(v) == ns then
ok = true
end
end
if not ok then -- not in one of the approved namespaces
return ""
end
local entity
if qid == "" then
entity = mw.wikibase.getEntityObject()
else
entity = mw.wikibase.getEntityObject(qid)
end
if not entity then -- no Wikidata item
return "[[Category:" .. catbase .. " not in Wikidata]]"
end
if value == "" then
return nil -- Using Wikidata
end
local claims = entity.claims or {}
local hasProp = claims[property]
if not hasProp then -- no claim of that property
return "[[Category:" .. catbase .. " not in Wikidata]]" -- bad. Bot needs to add the property
end
if ignorecase ~= "" then
value = string.lower( value )
end
for i, v in ipairs(hasProp) do -- Now we try to iterate over all possible values?
propValue = (v.mainsnak.datavalue or {}).value
if ignorecase ~= "" then
propValue = string.lower( propValue )
end
local sourced = false -- check for external refs a la Module:WikidataIB onlysourced
if v.references then
for j, vr in ipairs(v.references) do
local ref = mw.wikibase.renderSnaks(vr.snaks)
if not ref:find("Wiki") then
sourced = true
break
end
end
end
if propValue == value and (not onlysourced or sourced) then
if nocatsame == "" then
return "[[Category:" .. catbase .. " same as Wikidata]]" -- yay!
else
return nil -- if nocatsame, the "same as" category is not added
end
end
end
return "[[Category:" .. catbase .. " different from Wikidata]]" -- needs human review :(
end
return p