Modul:See also if exists

TemplateStyles' src attribute must not be empty.

This Lua module is used on many pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.

TemplateStyles' src attribute must not be empty.

This module depends on the following other modules:

Usage

Used by Template:see also if exists and Template:Category see also if exists.

{{#invoke:See also if exists| main}}

--[[ v1.0
]]
local p = {}
local yesno = require("Module:yesno")

function p.main(frame)
	local rawpages = {}
	local nvalid = 0
	local namespace = frame.args.ns
	for i, v in ipairs(frame:getParent().args) do
		if (v ~= nil) then
			local thisArg = mw.text.trim(v)
			if (thisArg ~= "") then
				local title = mw.title.new(thisArg, namespace)
				if title ~= nil and title.exists then
					table.insert(rawpages, title.fullText)
					nvalid = nvalid + 1
				end
			end
		end
	end
	if (nvalid == 0) then
		if yesno(frame.args.warning) then
			if namespace == nil then
				namespace = "page"
			elseif namespace:sub(-1) == "y" then
				namespace = namespace:sub(0, -2) .. "ie"
			end
			mw.addWarning(string.format("'''[[%s]] — no output, because none of the %ss currently exist.'''",
				frame:getParent():getTitle(),namespace))
		end
		return ""
	end
	local mLabelledList = require('Module:Labelled list hatnote')
	local pages = mLabelledList._labelledList(rawpages, "See also", "")
	return pages
end

return p