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This module is rated as beta, and is ready for widespread use. It is still new and should be used with some caution to ensure the results are as expected.

UsageUsage

This module is meant to be used in {{Aircraft category categories}}. This module generates parent categories for common aircraft-related Commons categories such as Category:Piper PA-28-180 Cherokee built in 1967 and Category:Cessna 172 by year of manufacture. Data used by this module can be found at Module:Aircraft category categories/parent category. This module may not generarte all categories applicable to the aircraft type, however, given how diverse each family of aircraft is named.

{{#invoke:Aircraft category categories|main|''category_page_name''}}

Code

-- meant to be used in categories like "Piper PA-28-180 Cherokee built in 1967" or "Cessna 172 by year of manufacture" to
-- automatically place them in the correct parent category.

local p = {}
local String = require("string")
local parentCategories = require("Module:Aircraft category categories/parent category")

p.main = function(frame)
	local pageName = frame.args[1]
	local currentCategory, i, parentCategory
	local aircraftByCategory = ""

	-- XX built in YYYY
	i = String.find(pageName, "built in %d")
	if i then
		currentCategory = String.sub(pageName, 1, i-2)
		parentCategory = parentCategories[currentCategory]
		if String.sub(parentCategory, -9) == " aircraft" then
			aircraftByCategory = "[[Category:Aircraft built in " .. String.sub(pageName, -4) .. " by designation]]" 
		end
		return "[[Category: " .. currentCategory .. " by year of manufacture|" .. String.sub(pageName, -4) .."]][[Category: ".. parentCategory .. String.sub(pageName, i-1) .. "| " .. currentCategory .. "]]" .. aircraftByCategory
	end

	-- XX by year of manufacture
	i = String.find(pageName, "by year of manufacture")
	if i then
		currentCategory = String.sub(pageName, 1, i-2)
		parentCategory = parentCategories[currentCategory]
		if String.sub(parentCategory, -9) == " aircraft" then
			aircraftByCategory = "[[Category:Aircraft by year of manufacture by type]]" 
		end
		return "[[Category: " .. currentCategory .. "| " .. currentCategory .."]][[Category: " .. parentCategory .. " by year of manufacture| year]]" .. aircraftByCategory
	end

	-- XX by registration
	i = String.find(pageName, "by registration")
	if i then 
		currentCategory = String.sub(pageName, 1, i-2)
		parentCategory = parentCategories[currentCategory]
		if String.sub(parentCategory, -9) == " aircraft" then
			aircraftByCategory = "[[Category:Aircraft by registration by type]]"
		end
		return "[[Category: " .. currentCategory .. "| registration]][[Category: " .. parentCategory .. " by registration| " .. currentCategory .."]]" .. aircraftByCategory
	end
end

return p