Module:Request redirect explained

-- This module implements .

local p, templates =,

---------------------------------------------------------------------------------- Templates---- These are templates used in the module's output. The templates use two-- different kinds of parameter. Parameters that look like $ will be-- replaced with the corresponding value from a data table. Parameters that -- look like $ will be replaced recursively by other templates-- in the templates table. This helps to reduce duplication of template code-- while also avoiding tricky conditional logic inside templates.-- -- Templates can contain arbitrary wikitext; wikitext will be expanded on-- transclusion, and left as-is on substitution.--------------------------------------------------------------------------------

templates.HEADING = '

Redirect request:

'

templates.BODY = [=[ * Target of redirect: [[:${target}]]

• Reason: $
• Source (if applicable): $

~~~~]=]

templates.OPEN_REQUEST = [=[ ${@HEADING} ${@BODY}]=]

templates.CLOSED_REQUEST = [=[ ${@HEADING} {{afc-c|d}} ${@BODY} ${afcredirect} <small>(Automatically declined)</small> {{afc-c|b}}]=]

templates.REQUEST_WITH_ERROR = [=[ ${@HEADING} ${@BODY} {{error|Error: ${errormsg}}}<!--subst:afc redirect|${closereason}-->]=]

---------------------------------------------------------------------------------- Helper functions--------------------------------------------------------------------------------

-- Substitutes parameters like $ and $. Templates-- are transcluded recursively.local function substituteParameters(template, data) local content = templates[template] if not content then error(string.format("the template '%s' does not exist", tostring(template) )) end content = content:gsub('$', function (at, param) if at

'@' then return substituteParameters(param, data) else return data[param] or end end) return contentend

-- Expand a template, substituting parameters and expanding wikitext as-- appropriate.local function expand(template, data, frame) frame = frame or mw.getCurrentFrame local content = substituteParameters(template, data) if mw.isSubsting then return content else return frame:preprocess(content) endend

-- Finds a page's status. This can be either:-- * "noinput" - for missing user input-- * "invalid" - for invalid titles (e.g. page names containing the "|" symbol)-- * "missing" - valid titles that don't exist-- * "exists" - valid titles that existlocal function getPageStatus(page) if not page then return 'noinput' end local title = mw.title.new(page) if not title then return 'invalid' elseif title.exists then return 'exists' else return 'missing' endend

---------------------------------------------------------------------------------- Exports--------------------------------------------------------------------------------

function p._main(args, frame) frame = frame or mw.getCurrentFrame

local data = data.title = args.title or args[1] data.target = args.target or args[2] data.reason = args.reason or args[3] data.source = args.source or args[4]

-- Check parameters for errors. local titleStatus = getPageStatus(data.title) local targetStatus = getPageStatus(data.target) local closeReason if titleStatus

'invalid' then closeReason = 'notitle' data.errormsg = string.format('"%s" is an invalid title.', data.title ) elseif targetStatus

'invalid' then closeReason = 'notarget' data.errormsg = string.format('"%s" is an invalid title.', data.target ) elseif titleStatus

'exists' then if targetStatus

'exists' then closeReason = 'exist' data.errormsg = string.format(' already exists on Wikipedia.', data.title ) elseif targetStatus

'missing' then -- Assume the user got the pages the wrong way round. data.title, data.target = data.target, data.title else -- targetStatus

'noinput' closeReason = 'notitle' data.errormsg = 'You have not specified the title of the redirect that you want created.' end elseif titleStatus

'missing' then -- If targetStatus

'exists' the submission is good and we don't need -- to do anything. if targetStatus

'missing' then closeReason = 'notarget' data.errormsg = string.format("Redirect target doesn't exist.", data.target ) elseif targetStatus

'noinput' then closeReason = 'notarget' data.errormsg = 'Redirect target was not specified.' end else -- titleStatus

'noinput' if targetStatus

'exists' then closeReason = 'notitle' data.errormsg = 'You have not specified the title of the redirect that you want created.' elseif targetStatus

'missing' then closeReason = 'notarget' data.errormsg = string.format("Redirect target doesn't exist.", data.target ) else -- targetStatus

'noinput' closeReason = 'blank' data.errormsg = 'We cannot accept empty submissions.' end end

-- Find the template we need, and expand if it is needed. local template if closeReason and args.close then template = 'CLOSED_REQUEST' data.afcredirect = frame:expandTemplate elseif closeReason then template = 'REQUEST_WITH_ERROR' else template = 'OPEN_REQUEST' end

-- Return the template with parameters substituted. return expand(template, data, frame)end

function p.main(frame) local args = require('Module:Arguments').getArgs(frame,) return p._main(args, frame)end

return p