Module:Error
 | This Lua module is used on 1,200+ pages, so changes to it will be widely noticed. Please test any changes in the module's /sandbox or /testcases subpages. Please consider discussing changes on the talk page before implementing them. |
This module creates an html message with class "error". It is a replacement for {{error}} - please see the documentation page there for usage instructions.
-- This module implements {{error}}.
local p = {}
local function _error(args)
local tag = mw.ustring.lower(tostring(args.tag))
-- Work out what html tag we should use.
if not (tag == 'p' or tag == 'span' or tag == 'div') then
tag = 'strong'
end
-- Generate the html.
return tostring(mw.html.create(tag)
:addClass('error')
:wikitext(tostring(args.message or args[1] or error('no message specified', 2)))
)
end
function p.error(frame)
local args
if type(frame.args) == 'table' then
-- We're being called via #invoke. The args are passed through to the module
-- from the template page, so use the args that were passed into the template.
args = frame.args
else
-- We're being called from another module or from the debug console, so assume
-- the args are passed in directly.
args = frame
end
-- if the message parameter is present but blank, change it to nil so that Lua will
-- consider it false.
if args.message == "" then
args.message = nil
end
return _error(args)
end
return p
