Module:If empty: Difference between revisions
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(add comment) |
(add a tracking category to any pages that use this behavior) |
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-- For backwards compatibility reasons, the first 9 parameters can be unset instead of being blank, |
-- For backwards compatibility reasons, the first 9 parameters can be unset instead of being blank, |
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-- even though there's really no legitimate use case for this. At some point, this will be removed. |
-- even though there's really no legitimate use case for this. At some point, this will be removed. |
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local lowestNil = math.huge |
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for i = 1, |
for i = 9,1,-1 do |
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if args[i] == nil then |
if args[i] == nil then |
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args[i] = '' |
args[i] = '' |
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lowestNil = i |
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end |
end |
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end |
end |
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for |
for k,v in ipairs(args) do |
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if v ~= '' then |
if v ~= '' then |
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if lowestNil < k then |
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-- If any uses of this template depend on the behavior above, add them to a tracking category. |
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-- This is a rather fragile, convoluted, hacky way to do it, but it ensures that this module's output won't be modified |
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-- by it. |
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frame:extensionTag('ref', '[[Category:Instances of Template:If_empty missing arguments]]', {group = 'TrackingCategory'}) |
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frame:extensionTag('references', '', {group = 'TrackingCategory'}) |
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end |
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return v |
return v |
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end |
end |
Revision as of 16:37, 23 December 2014
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 backwards compatibility reasons, the first 9 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 = 9,1,-1 do
if args[i] == nil then
args[i] = ''
lowestNil = i
end
end
for k,v in ipairs(args) do
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
end
end
end
return p