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 -- Module:DigitalAssetID local p = {}  local cargo = mw.ext.cargo  -- Helper: zero-pad sequence number local function pad(num)     return string.format("%04d", tonumber(num)) end  -- Main function: compute identifier function p.generate(frame)     local args = frame.args     local chapterPage = args.chapter_id     local placePage = args.place_id     local orgPage = args.organisation_id      -- 1. Enforce exclusivity     if (placePage ~= "" and orgPage ~= "") then..."

2026-02-13T21:26:52Z

Created page with "<pre> -- Module:DigitalAssetID local p = {} local cargo = mw.ext.cargo -- Helper: zero-pad sequence number local function pad(num) return string.format("%04d", tonumber(num)) end -- Main function: compute identifier function p.generate(frame) local args = frame.args local chapterPage = args.chapter_id local placePage = args.place_id local orgPage = args.organisation_id -- 1. Enforce exclusivity if (placePage ~= "" and orgPage ~= "") then..."

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<pre>
-- Module:DigitalAssetID
local p = {}

local cargo = mw.ext.cargo

-- Helper: zero-pad sequence number
local function pad(num)
return string.format("%04d", tonumber(num))
end

-- Main function: compute identifier
function p.generate(frame)
local args = frame.args
local chapterPage = args.chapter_id
local placePage = args.place_id
local orgPage = args.organisation_id

-- 1. Enforce exclusivity
if (placePage ~= "" and orgPage ~= "") then
return mw.text.jsonEncode({
error = "Select either a Place OR an Organisation, not both."
})
end

if (placePage == "" and orgPage == "") then
return mw.text.jsonEncode({
error = "You must select a Place OR an Organisation."
})
end

-- 2. Fetch Chapter code
local chapterRes = cargo.query(
"ResearchChapters",
"code",
{ where = string.format("_pageName='%s'", chapterPage) }
)

if not chapterRes[1] then
return mw.text.jsonEncode({ error = "Invalid chapter selected." })
end

local chapterCode = chapterRes[1].code

-- 3. Fetch context code (Place or Organisation)
local contextCode = nil
local contextTable = nil
local contextPage = nil

if placePage ~= "" then
contextTable = "Places"
contextPage = placePage
else
contextTable = "Organisations"
contextPage = orgPage
end

local ctxRes = cargo.query(
contextTable,
"code",
{ where = string.format("_pageName='%s'", contextPage) }
)

if not ctxRes[1] then
return mw.text.jsonEncode({ error = "Invalid context selected." })
end

contextCode = ctxRes[1].code

-- 4. Determine next sequence number
local existing = cargo.query(
"DigitalAssets",
"sequence_number",
{
where = string.format(
"chapter_id='%s' AND (place_id='%s' OR organisation_id='%s')",
chapterPage, placePage, orgPage
),
orderBy = "sequence_number DESC",
limit = 1
}
)

local nextSeq = 1
if existing[1] and existing[1].sequence_number then
nextSeq = tonumber(existing[1].sequence_number) + 1
end

-- 5. Format identifier
local identifier = string.format(
"%s-%s-%s",
chapterCode,
contextCode,
pad(nextSeq)
)

-- 6. Return result
return mw.text.jsonEncode({
identifier = identifier,
sequence_number = nextSeq
})
end

return p

</pre>

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