Module:Error
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 | This Lua module is used on approximately 470,000 pages, or roughly 42844% of all pages. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
 | This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing. |
This module creates an html message with class "error". It is a replacement for {{error}} - please see the documentation page there for usage instructions.
See also
-- 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