Preview warning

The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Documentation for this module may be created at Module:Preview warning/doc

local p = {}

--[[
main

This function returns parameter 1 as a warning if the page containing it is being previewed.

Usage:
{{#invoke:Preview warning|main|warning_text}}

]]

function p.main(frame)
	local preview = frame.args[1]:match('^%s*(.-)%s*$') or ''
	if preview == '' then preview = 'Something is wrong with this template' end
	if frame:preprocess( "{{REVISIONID}}" ) == "" then return '<div class="hatnote" style="color:red"><strong>Warning:</strong> ' .. preview .. ' (this message is shown only in preview)</div>' end
end

return p