मोड्युल:Portal

This module depends on the following other modules:

Module:Portal

This template produces a box with links to a portal or to multiple portals. It is most often used in the "See also" section of an article.

Usage

Page मोड्युल:Portal/styles.css has no content.

Basic usage

{{Portal |Portal 1 |Portal 2 |Portal 3 |... }}

All options

{{Portal
 | Portal 1
 | Portal 2
 | Portal 3
 | ... 
 | left = 
 | margin = 
 | break = 
 | boxsize = 
}}

Location

Within articles, this template is meant to be placed at the top of the article's See also section. If there is no See also section, you can put it in the External links section instead; there is no need to create a new section just to house this template. If there is no External links section either, just put it below the article text in the place that seems most appropriate.

There are no particular rules about the placement of portals on other kinds of pages.

Image

The portal image names are stored in subpages of Module:Portal/images, organised by the first letter of the portal name. For example, the first letter of Portal:Fishing is "F", so the image name is stored at Module:Portal/images/f. If there is an entry for a portal on the correct page then the corresponding image will be shown next to the portal link. If no image is found then File:Portal-puzzle.svg will be shown instead.

It is also possible to specify aliases for portal images. For example, the code {{Portal|Detroit}} produces the same image as the code {{Portal|Metro Detroit}}. The "Detroit" alias is found on the page Module:Portal/images/aliases.

The image-detection algorithm is case-insensitive. For example, the code {{Portal|Detroit}} will produce the same image as the code {{Portal|detroit}} (although the portal links will be different). Portal names are stored in lower case in the image subpages, and input is converted to lower case before being checked.

To add new images to the list, please make a protected edit request at Template talk:Portal to get an administrator to edit the correct subpage for you. Portal images must be either in the public domain or available under a free license that allows commercial reuse and derivative works; fair-use images are not acceptable. The template {{Portal icon demonstration}} may be of use when deciding whether an image is suitable for use as a portal icon; it formats an image using the same size and style that the {{Portal}} template uses by default.

List of image subpages

Page	Description
Module:Portal/images/a	For portal names starting with "A".
Module:Portal/images/b	For portal names starting with "B".
Module:Portal/images/c	For portal names starting with "C".
Module:Portal/images/d	For portal names starting with "D".
Module:Portal/images/e	For portal names starting with "E".
Module:Portal/images/f	For portal names starting with "F".
Module:Portal/images/g	For portal names starting with "G".
Module:Portal/images/h	For portal names starting with "H".
Module:Portal/images/i	For portal names starting with "I".
Module:Portal/images/j	For portal names starting with "J".
Module:Portal/images/k	For portal names starting with "K".
Module:Portal/images/l	For portal names starting with "L".
Module:Portal/images/m	For portal names starting with "M".
Module:Portal/images/n	For portal names starting with "N".
Module:Portal/images/o	For portal names starting with "O".
Module:Portal/images/p	For portal names starting with "P".
Module:Portal/images/q	For portal names starting with "Q".
Module:Portal/images/r	For portal names starting with "R".
Module:Portal/images/s	For portal names starting with "S".
Module:Portal/images/t	For portal names starting with "T".
Module:Portal/images/u	For portal names starting with "U".
Module:Portal/images/v	For portal names starting with "V".
Module:Portal/images/w	For portal names starting with "W".
Module:Portal/images/x	For portal names starting with "X".
Module:Portal/images/y	For portal names starting with "Y".
Module:Portal/images/z	For portal names starting with "Z".
Module:Portal/images/other	For portal names starting with any other letters. This includes numbers, letters with diacritics, and letters in non-Latin alphabets.
Module:Portal/images/aliases	For adding aliases for existing portal names. Use this page for variations in spelling and diacritics, etc., no matter what letter the portal begins with.

Example

Code	Result
{{Portal\|Science}}	Page मोड्युल:Portal/styles.css has no content.

Parameters

Name	Value	Description
`1`, `2`, `3` ...	The portal name, e.g. `Literature`	The positional parameters specify the portals to be displayed.
`left`	`yes`	If set to `yes`, the portal appears on the left side of the page instead of the right.
`margin`	CSS margin value, e.g. `1.2em 3em 0.5em 1em`	This allows you to set a custom margin. All valid CSS margin values are accepted.
`break`	`yes`	If set to `yes`, a line break is inserted after the portal name and before the word portal.
`boxsize`	Size in pixels, e.g. `300`	This sets a custom box width in pixels.

Maintenance

The following tracking category lists instances where the template is used incorrectly:

Category:Portal templates without a parameter

TemplateData

This is the TemplateData documentation for this template used by VisualEditor and other tools; see the monthly parameter usage report for this template.

TemplateData for Portal

A template to create a list of portals

ढाँचा प्यारामिटरहरू
मापदण्ड		विवरण	प्रकार	स्थिति
Portal (1)	`1`	Inserts the portal image and text. Further portals can be added to the template by increasing the number	String	आवश्यक
Portal (2)	`2`	Insert the portal image and text	String	वैकल्पिक
Portal (3)	`3`	Insert the portal image and text	String	वैकल्पिक
Side	`left`	If set to yes, the portal appears on the left side of the page instead of the right. पूर्वनिर्धारित no	String	वैकल्पिक
Margin size	`margin`	Alters the margin size. Any valid CSS margin is accepted	सङ्ख्या	वैकल्पिक
Line break	`break`	If set to yes, a line break is inserted after the portal name and before the word portal	String	वैकल्पिक
Box size	`boxsize`	This sets a custom box width in pixels.	सङ्ख्या	वैकल्पिक

--[==[ This module is a Lua implementation of the old {{Portal}} template. As of February 2019 it is used on nearly 7,900,000 articles.
-- Please take care when updating it! It outputs two functions: p.portal, which generates a list of portals, and p.image, which
-- produces the image name for an individual portal.

-- The portal image data is kept in submodules of [[Module:Portal/images]], listed below:
-- [[Module:Portal/images/a]]		- for portal names beginning with "A".
-- [[Module:Portal/images/b]]		- for portal names beginning with "B".
-- [[Module:Portal/images/c]]		- for portal names beginning with "C".
-- [[Module:Portal/images/d]]		- for portal names beginning with "D".
-- [[Module:Portal/images/e]]		- for portal names beginning with "E".
-- [[Module:Portal/images/f]]		- for portal names beginning with "F".
-- [[Module:Portal/images/g]]		- for portal names beginning with "G".
-- [[Module:Portal/images/h]]		- for portal names beginning with "H".
-- [[Module:Portal/images/i]]		- for portal names beginning with "I".
-- [[Module:Portal/images/j]]		- for portal names beginning with "J".
-- [[Module:Portal/images/k]]		- for portal names beginning with "K".
-- [[Module:Portal/images/l]]		- for portal names beginning with "L".
-- [[Module:Portal/images/m]]		- for portal names beginning with "M".
-- [[Module:Portal/images/n]]		- for portal names beginning with "N".
-- [[Module:Portal/images/o]]		- for portal names beginning with "O".
-- [[Module:Portal/images/p]]		- for portal names beginning with "P".
-- [[Module:Portal/images/q]]		- for portal names beginning with "Q".
-- [[Module:Portal/images/r]]		- for portal names beginning with "R".
-- [[Module:Portal/images/s]]		- for portal names beginning with "S".
-- [[Module:Portal/images/t]]		- for portal names beginning with "T".
-- [[Module:Portal/images/u]]		- for portal names beginning with "U".
-- [[Module:Portal/images/v]]		- for portal names beginning with "V".
-- [[Module:Portal/images/w]]		- for portal names beginning with "W".
-- [[Module:Portal/images/x]]		- for portal names beginning with "X".
-- [[Module:Portal/images/y]]		- for portal names beginning with "Y".
-- [[Module:Portal/images/z]]		- for portal names beginning with "Z".
-- [[Module:Portal/images/other]]	- for portal names beginning with any other letters. This includes numbers,
-- 									  letters with diacritics, and letters in non-Latin alphabets.
-- [[Module:Portal/images/aliases]]	- for adding aliases for existing portal names. Use this page for variations
-- 									  in spelling and diacritics, etc., no matter what letter the portal begins with.
--
-- The images data pages are separated by the first letter to reduce server load when images are added, changed, or removed.
-- Previously all the images were on one data page at [[Module:Portal/images]], but this had the disadvantage that all
-- 5,000,000 pages using this module needed to be refreshed every time an image was added or removed.
]==]

local p = {}

local trackingEnabled = true

local templatestyles = 'Module:Portal/styles.css'

-- Check whether to do tracking in this namespace
-- Returns true unless the page is one of the banned namespaces
local function checkTrackingNamespace()
	local thisPage = mw.title.getCurrentTitle()
	if (thisPage.namespace == 1) -- Talk
		or (thisPage.namespace == 2) -- User
		or (thisPage.namespace == 3) -- User talk
		or (thisPage.namespace == 5) -- Wikipedia talk
		or (thisPage.namespace == 7) -- File talk
		or (thisPage.namespace == 11) -- Template talk
		or (thisPage.namespace == 15) -- Category talk
		or (thisPage.namespace == 101) -- Portal talk
		or (thisPage.namespace == 109) -- Book talk
		or (thisPage.namespace == 118) -- Draft
		or (thisPage.namespace == 119) -- Draft talk
		or (thisPage.namespace == 829) -- Module talk
		then
		return false
	end
	return true
end

-- Check whether to do tracking on this pagename
-- Returns false if the page title matches one of the banned strings
-- Otherwise returns true
local function checkTrackingPagename()
	local thisPage = mw.title.getCurrentTitle()
	local thisPageLC = mw.ustring.lower(thisPage.text)
	if (string.match(thisPageLC, "/archive") ~= nil) then
		return false
	end
	if (string.match(thisPageLC, "/doc") ~= nil) then
		return false
	end
	if (string.match(thisPageLC, "/test") ~= nil) then
		return false
	end
	return true
end


local function matchImagePage(s)
	-- Finds the appropriate image subpage given a lower-case
	-- portal name plus the first letter of that portal name.
	if type(s) ~= 'string' or #s < 1 then return end
	local firstLetter = mw.ustring.sub(s, 1, 1)
	local imagePage
	if mw.ustring.find(firstLetter, '^[a-z]') then
		imagePage = 'Module:Portal/images/' .. firstLetter
	else
		imagePage = 'Module:Portal/images/other'
	end
	return mw.loadData(imagePage)[s]
end

local function getAlias(s)
	-- Gets an alias from the image alias data page.
	local aliasData = mw.loadData('Module:Portal/images/aliases')
	for portal, aliases in pairs(aliasData) do
		for _, alias in ipairs(aliases) do
			if alias == s then
				return portal
			end
		end
	end
end

local function getImageName(s)
	-- Gets the image name for a given string.
	local default = 'Portal-puzzle.svg|link=|alt='
	if type(s) ~= 'string' or #s < 1 then
		return default
	end
	s = mw.ustring.lower(s)
	return matchImagePage(s) or matchImagePage(getAlias(s)) or default
end

local function checkPortalExists(portal)
	return not (mw.title.makeTitle(100, portal).id == 0)
end

function p._portal(portals, args)
	-- This function builds the portal box used by the {{portal}} template.
	local root = mw.html.create('div')
		:attr('role', 'navigation')
		:attr('aria-label', 'Portals')
		:addClass('noprint portal plainlist')
		:addClass(args.left and 'tleft' or 'tright')
		:css('margin', args.margin or nil)
		:newline()

	-- Tracking is on by default.
	-- It is disabled if any of the following is true
	-- 1/ the parameter "tracking" is set to 'no, 'n', or 'false'
	-- 2/ the current page fails the namespace tests in checkTrackingNamespace()
	-- 3/ the current page fails the pagename tests in checkTrackingPagename()
	if (args.tracking == 'no') or (args.tracking == 'n') or (args.tracking == 'false') then
		trackingEnabled = false
	end
	if (checkTrackingNamespace() == false) then
		trackingEnabled = false
	end
	if (checkTrackingPagename() == false) then
		trackingEnabled = false
	end

	-- If no portals have been specified, display an error and add the page to a tracking category.
	if not portals[1] then
		if (args.nominimum == 'yes') or (args.nominimum == 'y') or (args.nominimum == 'true') then
		-- if nominimum as been set to yes (or similar), omit the warning
			
		else
			root:wikitext('<strong class="error">No portals specified: please specify at least one portal</strong>')
		end
		if (trackingEnabled) then
			root:wikitext('[[Category:Portal templates without a parameter]]')
		end
		return tostring(root)
	end
	
	-- scan for nonexistent portals, if they exist remove them from the portals table. If redlinks=yes, then don't remove
	local portallen = #portals
	-- traverse the list backwards to ensure that no portals are missed (table.remove also moves down the portals in the list, so that the next portal isn't checked if going fowards.
	-- going backwards allows us to circumvent this issue
	for i=portallen,1,-1 do
		-- the use of pcall here catches any errors that may occour when attempting to locate pages when the page name is invalid
		-- if pcall returns true, then rerun the function to find if the page exists
		if not pcall(checkPortalExists, portals[i]) or not checkPortalExists(portals[i]) then
			-- Getting here means a redlinked portal has been found
			if (args.redlinks == 'yes') or (args.redlinks == 'y') or (args.redlinks == 'true') or (args.redlinks == 'include') then
				-- if redlinks as been set to yes (or similar), add the cleanup category and then break the loop before the portal is removed from the list
				if (trackingEnabled) then
					root:wikitext('[[Category:Portal templates with redlinked portals]]')
				end
				break
			end
			-- remove the portal (this does not happen if redlinks=yes)
			table.remove(portals,i)
		end
	end
	
	-- if the length of the table is different, then rows were removed from the table, so portals were removed. If this is the case add the cleanup category
	if not (portallen == #portals) then
		if (trackingEnabled) then
			if #portals == 0 then
				return '[[Category:Portal templates with all redlinked portals]]'
			else
				root:wikitext('[[Category:Portal templates with redlinked portals]]')
			end
		end
	end

	-- Start the list. This corresponds to the start of the wikitext table in the old [[Template:Portal]].
	local listroot = root:tag('ul')
		:css('width', type(args.boxsize) == 'string' and (args.boxsize .. 'px') or nil)

	-- Display the portals specified in the positional arguments.
	for _, portal in ipairs(portals) do
		local image = getImageName(portal)

		-- Generate the html for the image and the portal name.
		listroot
			:newline()
			:tag('li')
				:tag('span')
					:wikitext(string.format('[[File:%s|32x28px|class=noviewer]]', image))
					:done()
				:tag('span')
					:wikitext(string.format('[[Portal:%s|%s%sportal]]', portal, portal, args['break'] and '<br />' or ' '))
	end
	return tostring(root)
end

function p._image(portals)
	-- Wrapper function to allow getImageName() to be accessed through #invoke.
	local name = getImageName(portals[1])
	return name:match('^(.-)|') or name -- FIXME: use a more elegant way to separate borders etc. from the image name
end

local function getAllImageTables()
	-- Returns an array containing all image subpages (minus aliases) as loaded by mw.loadData.
	local images = {}
	for i, subpage in ipairs{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'other'} do
		images[i] = mw.loadData('Module:Portal/images/' .. subpage)
	end
	return images
end

function p._displayAll(portals, args)
	-- This function displays all portals that have portal images. This function is for maintenance purposes and should not be used in
	-- articles, for two reasons: 1) there are over 1500 portals with portal images, and 2) the module doesn't record how the portal
	-- names are capitalized, so the portal links may be broken.
	local lang = mw.language.getContentLanguage()
	local count = 1
	for _, imageTable in ipairs(getAllImageTables()) do
		for portal in pairs(imageTable) do
			portals[count] = lang:ucfirst(portal)
			count = count + 1
		end
	end
	return p._portal(portals, args)
end

function p._imageDupes()
	-- This function searches the image subpages to find duplicate images. If duplicate images exist, it is not necessarily a bad thing,
	-- as different portals might just happen to choose the same image. However, this function is helpful in identifying images that
	-- should be moved to a portal alias for ease of maintenance.
	local exists, dupes = {}, {}
	for _, imageTable in ipairs(getAllImageTables()) do
		for portal, image in pairs(imageTable) do
			if not exists[image] then
				exists[image] = portal
			else
				table.insert(dupes, string.format('The image "[[:File:%s|%s]]" is used for both portals "%s" and "%s".', image, image, exists[image], portal))
			end
		end
	end
	if #dupes < 1 then
		return 'No duplicate images found.'
	else
		return 'The following duplicate images were found:\n* ' .. table.concat(dupes, '\n* ')
	end
end

local function processPortalArgs(args)
	-- This function processes a table of arguments and returns two tables: an array of portal names for processing by ipairs, and a table of
	-- the named arguments that specify style options, etc. We need to use ipairs because we want to list all the portals in the order
	-- they were passed to the template, but we also want to be able to deal with positional arguments passed explicitly, for example
	-- {{portal|2=Politics}}. The behaviour of ipairs is undefined if nil values are present, so we need to make sure they are all removed.
	args = type(args) == 'table' and args or {}
	local portals = {}
	local namedArgs = {}
	for k, v in pairs(args) do
		if type(k) == 'number' and type(v) == 'string' then -- Make sure we have no non-string portal names.
			table.insert(portals, k)
		elseif type(k) ~= 'number' then
			namedArgs[k] = v
		end
	end
	table.sort(portals)
	for i, v in ipairs(portals) do
		portals[i] = args[v]
	end
	return portals, namedArgs
end

local function makeWrapper(funcName)
	-- Processes external arguments and sends them to the other functions.
	return function (frame)
		-- If called via #invoke, use the args passed into the invoking
		-- template, or the args passed to #invoke if any exist. Otherwise
		-- assume args are being passed directly in from the debug console
		-- or from another Lua module.
		local origArgs
		if type(frame.getParent) == 'function' then
			origArgs = frame:getParent().args
			for k, v in pairs(frame.args) do
				origArgs = frame.args
				break
			end
		else
			origArgs = frame
		end
		-- Trim whitespace and remove blank arguments.
		local args = {}
		for k, v in pairs(origArgs) do
			if type(v) == 'string' then
				v = mw.text.trim(v)
			end
			if v ~= '' then
				args[k] = v
			end
		end
		
		local results = ''
		if funcName == '_portal' or funcName == '_displayAll' then
			results = frame:extensionTag{ name = 'templatestyles', args = { src = templatestyles} }
		end
		return results .. p[funcName](processPortalArgs(args)) -- passes two tables to func: an array of portal names, and a table of named arguments.
	end
end

for _, funcName in ipairs{'portal', 'image', 'imageDupes', 'displayAll'} do
	p[funcName] = makeWrapper('_' .. funcName)
end

return p

v t e Portal templates
Visual overview of template usage
Layout and formatting	{{Box portal skeleton}} {{Box-header}} color palette versions plain round square watch {{Box-header colour}}¹ {{Box-footer}} {{Flex columns}} {{Plain navboxes}} {{Basic portal start page}}
Content transclusion	{{Transclude lead excerpt}}² {{Transclude random excerpt}}² {{Transclude selected excerpt}}² {{Transclude linked excerpt}}² {{Transclude list item excerpt}}² {{Transclude selected current events}}³ {{Transclude selected recent additions}}⁴ {{Transclude DYK}}⁹
Content slideshows	{{Random slideshow}}⁵ {{Transclude files as random slideshow}}⁵ {{Transclude excerpts as random slideshow}}⁶ {{Transclude linked excerpts as random slideshow}}⁶ {{Transclude list item excerpts as random slideshow}}⁶
Content randomisation	{{Random quotation}} {{Random portal component}}⁷
General	{{Portals}} {{Portals browsebar}} {{Portal description}} {{Wikimedia for portals}} {{Portal navbar no header2}}
Linking templates	{{Portal}} {{Portal-inline}}¹¹ {{Portal bar}}
Talk pages / Maintenance	{{Portal talk}} {{WikiProject Portals}}⁸ {{Portal maintenance status}}⁸ {{Portal suggestions}}
Images	{{Portal image banner}}¹⁰ {{Random slideshow}}⁵ {{Portal dynamic image}} {{Transclude files as random slideshow}}⁵
Modules	¹Module:Box-header (Evad37) ²Module:Excerpt (Certes) ³Module:Selected current events (Evad37) ⁴Module:Selected recent additions (Evad37) ⁵Module:Random slideshow (Evad37) ⁶Module:Excerpt slideshow (Evad37) ⁷Module:Random portal component (Chochopk) ⁸Module:Portal maintenance status (Evad37) ⁹Module:Transclude DYK (Certes) ¹⁰Module:Portal image banner ¹¹Module:Portal-inline (Dreamy Jazz)
Usage	Wikipedia:Portal Wikipedia:Portal/Guidelines Wikipedia:Portal/Guidelines/Categorizing Wikipedia:Portal/Instructions Wikipedia:WikiProject Portals/Components
For more information, see: Wikipedia:WikiProject Portals · See also: Category:Template-Class Portal pages and Category:Wikipedia Portal templates