Module:Flex columns

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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. It is ready to mention on help pages and other Wikipedia resources as an option for new users to learn. To reduce server load and bad output, it should be improved by sandbox testing rather than repeated trial-and-error editing.

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This Lua module is used on approximately 5,000 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.

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This module uses TemplateStyles:

Template:Flex columns/styles.css

Usage

Implements {{Flex columns}}

local p = {}

local function setCleanArgs(argsTable)
	local cleanArgs = {}
	for key, val in pairs(argsTable) do
		if type(val) == 'string' then
			val = val:match('^%s*(.-)%s*$')
			if val ~= '' then
				cleanArgs[key] = val
			end
		else
			cleanArgs[key] = val
		end
	end
	return cleanArgs
end

p.main = function(frame)
	local parent = frame.getParent(frame)
	local output = p._main(parent.args)
	return frame:extensionTag{ name='templatestyles', args = { src='Flex columns/styles.css'} } .. frame:preprocess(output)
end

p._main = function(_args)
	local args = setCleanArgs(_args)
	local ii = 1
	local container = mw.html.create('div')
	:addClass('flex-columns-container' )
	while args[ii] do
		local column = container:tag('div')
		:addClass('flex-columns-column' )
		:wikitext(args[ii])
		if args['flex'..ii] then
			column:css('flex', args['flex'..ii])
		end
		ii = ii + 1
	end
	return tostring(container)
end

return p