Module:Check for unknown parameters
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![]() | This module depends on the following other modules: |
Module:Check for unknown parameters is used to check for uses of unknown parameters in a template or module. It may be appended to a template at the end or called directly from a module.
Usage
From a template
To sort entries into a tracking category by parameter, use:
{{#invoke:Check for unknown parameters|check|unknown=[[Category:Some tracking category|_VALUE_]]|arg1|arg2|arg3|argN}}
To sort the entries into a tracking category by parameter with a preview error message, use:
{{#invoke:Check for unknown parameters|check|unknown=[[Category:Some tracking category|_VALUE_]]|preview=unknown parameter "_VALUE_"|arg1|arg2|...|argN}}
For an explicit red error message, use:
{{#invoke:Check for unknown parameters|check|unknown=<span class="error">Sorry, I don't recognize _VALUE_</span>|arg1|arg2|...|argN}}
To use Lua patterns, use:
{{#invoke:Check for unknown parameters|check|unknown=[[Category:Some tracking category|_VALUE_]]|preview=unknown parameter "_VALUE_"|arg1|arg2|...|argN|regexp1=header[%d]+|regexp2=date[1-9]}}
From a module
To call from a module, use:
local checkForUnknownParameters = require("Module:Check for unknown parameters")
local result = checkForUnknownParameters._check(validArgs, args)
Where the first set of args are the module args below and the second set of args are the parameters that are checked.
Parameters
arg1
,arg2
, ...,argN
, are the known parameters.- Unnamed (positional) parameters can be added too:
|1|2|arg1|arg2|...
. - Lua patterns (similar to regular expressions) usage with parameters is also supported (such as:
|regexp1=header[%d]+
,|regexp2=date[1-9]
,|regexp3=data[%d]+[abc]?
). This is useful when there are many known parameters which use a systematic pattern. |unknown=
– what happens when an uknown parameter is used. Typically use either a tracking category to place pages that use unknown parameters, or an error.|preview=
– the text to be displayed when in preview mode and an unknown parameter is used.- The
_VALUE_
keyword, if used, will be changed to the name of the parameter. This is useful for either sorting the entries in a tracking category, or for provide more explicit information. |ignoreblank=1
– by default, the module makes no distinction between a defined-but-blank parameter and a non-blank parameter. That is, both unlisted|foo=x
and|foo=
are reported. To only track non-blank parameters use|ignoreblank=1
.|showblankpositional=1
– by default, the module ignores blank positional parameters. That is, an unlisted|2=
is ignored. To include blank positional parameters in the tracking use|showblankpositional=1
.
Example
{{Infobox
| above = {{{name|}}}
| label1 = Height
| data1 = {{{height|}}}
| label2 = Weight
| data2 = {{{weight|}}}
| label3 = Website
| data3 = {{{website|}}}
}}<!--
end infobox, start tracking
-->{{#invoke:Check for unknown parameters|check
| unknown = {{Main other|[[Category:Some tracking category|_VALUE_]]}}
| preview = unknown parameter "_VALUE_" | height | name | website | weight
}}
Call from within Lua code
See the end of Module:Rugby box for a simple example or Module:Infobox3cols or Module:Flag for more complicated examples.
See also
- Category:Unknown parameters (273) (category page can have header {{Unknown parameters category}})
- Module:Params – for complex operations involving parameters
- Template:Checks for unknown parameters – adds documentation to templates using this module
- Module:Check for deprecated parameters – similar module that checks for deprecated parameters
- Module:Check for clobbered parameters – module that checks for conflicting parameters
- Module:TemplatePar – similar function (originally from dewiki)
- Template:Parameters and Module:Parameters – generates a list of parameter names for a given template
- Project:TemplateData based template parameter validation
- Module:Parameter validation checks a lot more
- User:Bamyers99/TemplateParametersTool - A tool for checking usage of template parameters
-- This module may be used to compare the arguments passed to the parent
-- with a list of arguments, returning a specified result if an argument is
-- not on the list
local p = {}
local function trim(s)
return s:match('^%s*(.-)%s*$')
end
local function isnotempty(s)
return s and s:match('%S')
end
local function clean(text)
-- Return text cleaned for display and truncated if too long.
-- Strip markers are replaced with dummy text representing the original wikitext.
local pos, truncated
local function truncate(text)
if truncated then
return ''
end
if mw.ustring.len(text) > 25 then
truncated = true
text = mw.ustring.sub(text, 1, 25) .. '...'
end
return mw.text.nowiki(text)
end
local parts = {}
for before, tag, remainder in text:gmatch('([^\127]*)\127[^\127]*%-(%l+)%-[^\127]*\127()') do
pos = remainder
table.insert(parts, truncate(before) .. '<' .. tag .. '>...</' .. tag .. '>')
end
table.insert(parts, truncate(text:sub(pos or 1)))
return table.concat(parts)
end
function p._check(args, pargs)
if type(args) ~= "table" or type(pargs) ~= "table" then
-- TODO: error handling
return
end
-- create the list of known args, regular expressions, and the return string
local knownargs = {}
local regexps = {}
for k, v in pairs(args) do
if type(k) == 'number' then
v = trim(v)
knownargs[v] = 1
elseif k:find('^regexp[1-9][0-9]*$') then
table.insert(regexps, '^' .. v .. '$')
end
end
-- loop over the parent args, and make sure they are on the list
local ignoreblank = isnotempty(args['ignoreblank'])
local showblankpos = isnotempty(args['showblankpositional'])
local values = {}
for k, v in pairs(pargs) do
if type(k) == 'string' and knownargs[k] == nil then
local knownflag = false
for _, regexp in ipairs(regexps) do
if mw.ustring.match(k, regexp) then
knownflag = true
break
end
end
if not knownflag and ( not ignoreblank or isnotempty(v) ) then
table.insert(values, clean(k))
end
elseif type(k) == 'number' and knownargs[tostring(k)] == nil then
local knownflag = false
for _, regexp in ipairs(regexps) do
if mw.ustring.match(tostring(k), regexp) then
knownflag = true
break
end
end
if not knownflag and ( showblankpos or isnotempty(v) ) then
table.insert(values, k .. ' = ' .. clean(v))
end
end
end
-- add results to the output tables
local res = {}
if #values > 0 then
local unknown_text = args['unknown'] or 'Found _VALUE_, '
if mw.getCurrentFrame():preprocess( "{{REVISIONID}}" ) == "" then
local preview_text = args['preview']
if isnotempty(preview_text) then
preview_text = require('Module:If preview')._warning({preview_text})
elseif preview == nil then
preview_text = unknown_text
end
unknown_text = preview_text
end
for _, v in pairs(values) do
-- Fix odd bug for | = which gets stripped to the empty string and
-- breaks category links
if v == '' then v = ' ' end
-- avoid error with v = 'example%2' ("invalid capture index")
local r = unknown_text:gsub('_VALUE_', {_VALUE_ = v})
table.insert(res, r)
end
end
return table.concat(res)
end
function p.check(frame)
local args = frame.args
local pargs = frame:getParent().args
return p._check(args, pargs)
end
return p