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Check For Unknown Parameters

This module may be appended to a template to check for uses of unknown parameters.

Check For Unknown Parameters Module documentation

Usage

{{#invoke:check for unknown parameters|check |unknown=[[Category:Some tracking category]] |arg1|arg2|...|argN}}

or to sort the entries in the tracking category by parameter 

{{#invoke:check for unknown parameters|check |unknown=[[Category:Some tracking category|_VALUE_]] |arg1|arg2|...|argN}}

or for an explicit red error message 

{{#invoke:check for unknown parameters|check |unknown=Sorry, I don't recognize _VALUE_ |arg1|arg2|...|argN}}

or to use hidden error messages which can be viewed in the HTML source 

{{#invoke:check for unknown parameters|check |unknown=HIDDEN ERROR: Usage of "_VALUE_" is not recognized |arg1|arg2|...|argN}}

Here, arg1, arg2, ..., argN, are the known parameters. Any parameter which is used, but not on this list, will cause the module to return whatever is passed with the unknown parameter. 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.

By default, the module makes no distinction between a defined-but-blank parameter and a non-blank parameter. To only track non-blank parameters use |ignoreblank=1.

Example

{{Infobox | above = {{{name|}}}  | label1 = Height | data1 = {{{height|}}}  | label2 = Weight | data2 = {{{weight|}}}  | label3 = Website | data3 = {{{website|}}} }}{{#invoke:Check for unknown parameters|check | unknown = [[Category:Some tracking category|_VALUE_]] | name | height | weight | website }}
-- 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*$') end  local function isnotempty(s) return s and trim(s) ~= '' end  function p.check (frame) local args = frame.args local pargs = frame:getParent().args local ignoreblank = isnotempty(frame.args['ignoreblank']) local showblankpos = isnotempty(frame.args['showblankpositional']) local knownargs = {} local unknown = frame.args['unknown'] or 'Found _VALUE_, ' local preview = frame.args['preview']  local values = {} local res = {} local regexps = {}  -- create the list of known args, regular expressions, and the return string for k, v in pairs(args) do if type(k) == 'number' then v = trim(v) knownargs[v] = 1 elseif k:find('^regexp[1-9][0-9]*$') then table.insert(regexps, '^' .. v .. '$') end end if isnotempty(preview) then  preview = '
Warning: ' .. preview .. ' (this message is shown only in preview).
' elseif preview == nil then preview = unknown end  -- loop over the parent args, and make sure they are on the list for k, v in pairs(pargs) do if type(k) == 'string' and knownargs[k] == nil then local knownflag = false for i, 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 k = mw.ustring.gsub(k, '[^%w\-_ ]', '?') table.insert(values, k) end elseif type(k) == 'number' and knownargs[tostring(k)] == nil and ( showblankpos or isnotempty(v) ) then local vlen = mw.ustring.len(v) v = mw.ustring.sub(v, 1, (vlen < 25) and vlen or 25) v = mw.ustring.gsub(v, '[^%w\-_ ]', '?') table.insert(values, k .. ' = ' .. v .. ((vlen >= 25) and ' ...' or '')) end end  -- add resuls to the output tables if #values > 0 then if frame:preprocess( "{{REVISIONID}}" ) == "" then unknown = preview end for k, v in pairs(values) do if v == '' then -- Fix odd bug for | = which gets stripped to the empty string and -- breaks category links v = ' ' end local r = unknown:gsub('_VALUE_', v) table.insert(res, r) end end  return table.concat(res) end  return p

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