Module:Subject page header

Module documentationviewedithistorypurge

This module is used from the interface message MediaWiki:Subjectpageheader-json and MediaWiki:Subjectpageheader-SecurePoll, shown at the top of pages with relevant content models.

The interface message is parsed on every page view. There is no caching (although for logged-out users Varnish caches the entire HTML before it even reaches MediaWiki). So, please ensure this module runs as fast as possible. Some tips:

• Avoid unconditional imports of other modules. Instead, import them inside conditional blocks where they are needed.
• Avoid unconditionally performing expensive lookups.

Usage

{{#invoke:Subject page header|main}}

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

local p = {}

-- Invoked from [[MediaWiki:Subjectpageheader-json]]
p.json = function(frame)
	local title = mw.title.getCurrentTitle()
	local pageName = title.fullText
	
	local isJsonPage = pageName:len() > 5 and pageName:sub(-5) == ".json"
	if isJsonPage then
		local docPageName = pageName:sub(0, -6)
		local docTitle = mw.title.new(docPageName)
		local content = ''
		if docTitle.exists then
			local Hatnote = require('Module:Hatnote')
			content = 
				'<hr>' .. 
				Hatnote._hatnote(
					'The following documentation is located at [['..docPageName..']].<span class="mw-editsection-like plainlinks">[[Special:EditPage/'..docPageName..'|edit]][[Special:PageHistory/'..docPageName..'|history]]</span>'
				) ..
				frame:preprocess(docTitle.content)
		end

		return '<div class="mw-parser-output">' .. content .. '</div>'	
	end
	return ''
end

-- Invoked from [[MediaWiki:Subjectpageheader-SecurePoll]]
p.SecurePoll = function()
	local Hatnote = require('Module:Hatnote')

	return '<div class="mw-parser-output">'..Hatnote._hatnote('This page contains the configuration for a [[m:SecurePoll|SecurePoll]] election. It cannot be directly edited. Any changes must be done via [[Special:SecurePoll]].')..'</div>'
end

return p