Module:Caller title

Lua

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This module is rated as ready for general use. It has reached a mature form and is thought to be bug-free and ready for use wherever appropriate. To reduce server load and bad output, it should be improved by sandbox testing rather than repeated trial-and-error editing.

This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.

This module simply returns the title of the page calling this module. It’s intended for templates translated using the Translate extension. It has two entry points, both can be called with {{#invoke:Caller title|entry point name}}:

title: Get the full title of the template.
lang: Get the language code (subpage name). In fact, it doesn’t check if the subpage name is a valid language code, so if called from X/y/z, it’ll happily return z. The template using this functionality should ensure it’s only used on language subpages (or be okay with garbage output). An additional |base= parameter can be given with the full title of the translation base page, so that page language is used on that page (as there is no language code subpage there).

Code

local p = {}

function p.title(frame)
	return frame:getParent():getTitle()
end

function p.lang(frame)
	local base = frame.args.base
	local title = p.title(frame)
	if base ~= title then
		local parts = mw.text.split(p.title(frame), '/', true)
		return parts[#parts]
	else
		-- we’re on the base page of the translation (directly, it’s not translated from somewhere),
		-- so we have no subpage language code, but we use PAGELANGUAGE
		return frame:preprocess('{{PAGELANGUAGE}}')
	end
end

return p