Module:Contentious topics/make link

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Given a contentious topic code, this module outputs a link to a contentious topic subpage formatted to remove the "Wikipedia:Contentious topics/" prefix from the display.

Usage

{{#invoke:Contentious topics/make link|makeTopicLink|<contentious topic code>}}

• {{#invoke:Contentious topics/make link|makeTopicLink|blp}} → Biographies of Living Persons
• {{#invoke:Contentious topics/make link|makeTopicLink|sasg}} → South Asia
• {{#invoke:Contentious topics/make link|makeTopicLink|does not exist}} →
• {{#invoke:Contentious topics/make link|makeTopicLink}} →

From a Lua module, use code like:

require('Module:Contentious topics/make link')._makeTopicLink(<code>)

The above documentation is transcluded from Module:Contentious topics/make link/doc. (edit | history)
Editors can experiment in this module's sandbox (create | mirror) and testcases (create) pages.
Subpages of this module.

local p = {}

function p.makeTopicLink(frame)
	-- call from a template
	args = require('Module:Arguments').getArgs(frame)
	return p._makeTopicLink(args['code'] or args[1])
end

function p._makeTopicLink(code)
	-- call from a module
	local topicSubpage = mw.getCurrentFrame():expandTemplate{
		title = "Contentious topics/list",
		args = { ['topic-subpage'] = code }
	}
	if code == nil then
		return '<span class="error">Error! No contentious topic code given</span>'
	elseif topicSubpage == '' then
		return '<span class="error">Error! <code>' .. code .. '</code> is not a valid contentious topic code</span>'
	end
	
	return '[[' .. topicSubpage ..'|'
		.. mw.ustring.gsub(topicSubpage, 'Wikipedia:Contentious topics/', '')
		.. ']]'
end

return p