This modules produces the tracking categories for Template:Infobox lighthouse
local p = {}
function p.tracking(frame)
local res = ''
local isNRHP = false
local hasNRHPbox = false
local heritage = frame.args.heritage or ''
if heritage == '' then
elseif (heritage:match('National Register of Historic Places') or
heritage:match('NRHP') ) then
res = res .. '[[Category:Pages using infobox lighthouse with NRHP heritage]]'
isNRHP = true
end
for k, v in pairs( frame:getParent().args ) do
if k and k == 'module' then
if v and v:match('<tr') then
if v:match('National Register of Historic Places') or v:match('NRHP')
or v:match('U.S. Historic district')
or v:match('U.S. National Register of Historic Places') then
hasNRHPbox = true
end
end
end
end
if hasNRHPbox == false and isNRHP == true then
res = res .. '[[Category:Pages using infobox lighthouse with NRHP heritage|‽]]'
end
if hasNRHPbox == true and isNRHP == false then
res = res .. '[[Category:Pages using infobox lighthouse with NRHP heritage|¶]]'
end
return res
end
return p