Module:If empty: Difference between revisions

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(Created page with "local p = {} function p.main(frame) local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false}) -- For backwards compat...")
 
(lastk is not needed)
Line 3: Line 3:
function p.main(frame)
function p.main(frame)
local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})
local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})
-- For backwards compatibility reasons, the first 8 parameters can be unset instead of being blank,
-- even though there's really no legitimate use case for this. At some point, this will be removed.
local lowestNil = math.huge
for i = 8,1,-1 do
if args[i] == nil then
args[i] = ''
lowestNil = i
end
end


for k,v in ipairs(args) do
for k,v in ipairs(args) do
if v ~= '' then
if v ~= '' then
if lowestNil < k then
-- If any uses of this template depend on the behavior above, add them to a tracking category.
-- This is a rather fragile, convoluted, hacky way to do it, but it ensures that this module's output won't be modified
-- by it.
frame:extensionTag('ref', '[[Category:Instances of Template:If_empty missing arguments]]', {group = 'TrackingCategory'})
frame:extensionTag('references', '', {group = 'TrackingCategory'})
end
return v
return v
end
end
end
end
end
end


return p
return p

Revision as of 18:33, 26 January 2023

Documentation for this module may be created at Module:If empty/doc 

local p = {}

function p.main(frame)
	local args = require('Module:Arguments').getArgs(frame, {wrappers = 'Template:If empty', removeBlanks = false})

	for k,v in ipairs(args) do
		if v ~= '' then
			return v
		end
	end

end

return p
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