Difference between revisions of "Module:Ns has subpages"

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(convert this to use Module:Ns has subpages - this gets the subpage status directly from MediaWiki, avoiding the need to update the template when namespaces change)
 
m (1 revision imported)
 
(One intermediate revision by one other user not shown)
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{{<includeonly>safesubst:</includeonly>#invoke:Ns has subpages|main}}<noinclude>
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-- This module implements [[Template:Ns has subpages]].
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{{documentation}}
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-- While the template is fairly simple, this information is made available to
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<!-- Categories go on the /doc subpage and interwikis go on Wikidata. -->
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-- Lua directly, so using a module means that we don't have to update the
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</noinclude>
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-- template as new namespaces are added.
 +
 
 +
local p = {}
 +
 
 +
function p._main(ns, frame)
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-- Get the current namespace if we were not passed one.
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if not ns then
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ns = mw.title.getCurrentTitle().namespace
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end
 +
 
 +
-- Look up the namespace table from mw.site.namespaces. This should work
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-- for a majority of cases.
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local nsTable = mw.site.namespaces[ns]
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-- Try using string matching to get the namespace from page names.
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-- Do a quick and dirty bad title check to try and make sure we do the same
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-- thing as {{NAMESPACE}} in most cases.
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if not nsTable and type(ns) == 'string' and not ns:find('[<>|%[%]{}]') then
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local nsStripped = ns:gsub('^[_%s]*:', '')
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nsStripped = nsStripped:gsub(':.*$', '')
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nsTable = mw.site.namespaces[nsStripped]
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end
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-- If we still have no match then try the {{NAMESPACE}} parser function,
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-- which should catch the remainder of cases. Don't use a mw.title object,
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-- as this would increment the expensive function count for each new page
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-- tested.
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if not nsTable then
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frame = frame or mw.getCurrentFrame()
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local nsProcessed = frame:callParserFunction('NAMESPACE', ns)
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nsTable = nsProcessed and mw.site.namespaces[nsProcessed]
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end
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return nsTable and nsTable.hasSubpages
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end
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function p.main(frame)
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local ns = frame:getParent().args[1]
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if ns then
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ns = ns:match('^%s*(.-)%s*$') -- trim whitespace
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ns = tonumber(ns) or ns
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end
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local hasSubpages = p._main(ns, frame)
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return hasSubpages and 'yes' or ''
 +
end
 +
 
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return p

Latest revision as of 20:48, 29 March 2017

Lua error: Internal error: The interpreter has terminated with signal "11". This module finds whether a given namespace can have subpages.

Usage

From wikitext

From wikitext this module must be used via the {{ns has subpages}} template. Please see the template page for documentation.

From Lua

Usually Lua modules should use mw.site.namespaces[namespace].hasSubpages rather than this module. But if you have a good reason, it can be accessed like this:

Load the module: 

local mNsHasSubpages = require('Module:Ns has subpages')

The subpage information can be found with the ._main function: 

mNsHasSubpages._main(ns, frame)
  • ns is the namespace name, number, or a page name. It defaults to the current namespace.
  • frame is a frame object with which we can call frame:callParserFunction if necessary. This is optional, and intended for internal use.


Script error: Lua error: Internal error: The interpreter has terminated with signal "11". 

-- This module implements [[Template:Ns has subpages]].
-- While the template is fairly simple, this information is made available to
-- Lua directly, so using a module means that we don't have to update the
-- template as new namespaces are added.

local p = {}

function p._main(ns, frame)
	-- Get the current namespace if we were not passed one.
	if not ns then
		ns = mw.title.getCurrentTitle().namespace
	end

	-- Look up the namespace table from mw.site.namespaces. This should work
	-- for a majority of cases.
	local nsTable = mw.site.namespaces[ns]

	-- Try using string matching to get the namespace from page names.
	-- Do a quick and dirty bad title check to try and make sure we do the same
	-- thing as {{NAMESPACE}} in most cases.
	if not nsTable and type(ns) == 'string' and not ns:find('[<>|%[%]{}]') then
		local nsStripped = ns:gsub('^[_%s]*:', '')
		nsStripped = nsStripped:gsub(':.*$', '')
		nsTable = mw.site.namespaces[nsStripped]
	end

	-- If we still have no match then try the {{NAMESPACE}} parser function,
	-- which should catch the remainder of cases. Don't use a mw.title object,
	-- as this would increment the expensive function count for each new page
	-- tested.
	if not nsTable then
		frame = frame or mw.getCurrentFrame()
		local nsProcessed = frame:callParserFunction('NAMESPACE', ns)
		nsTable = nsProcessed and mw.site.namespaces[nsProcessed]
	end
	
	return nsTable and nsTable.hasSubpages
end

function p.main(frame)
	local ns = frame:getParent().args[1]
	if ns then
		ns = ns:match('^%s*(.-)%s*$') -- trim whitespace
		ns = tonumber(ns) or ns
	end
	local hasSubpages = p._main(ns, frame)
	return hasSubpages and 'yes' or ''
end

return p
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