Difference between revisions of "Module:Ns has subpages"
(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 (Protected Module:Ns has subpages: High-risk Lua module ([Edit=Allow only template editors and admins] (indefinite) [Move=Allow only template editors and admins] (indefinite))) |
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| − | + | -- 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 | ||
Revision as of 01:37, 10 December 2014
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
