Wikipedia:Lua/Modul/Vorlage:Soft redirect/en

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Vorlage:Soft redirect – Module for generation of correct interwiki links in Template:Soft redirect.

Functions for Templates

f

Standard task: create link in internal format.

Parameter (of template transclusion):

1

Link target (with or without leading colon :).

2

optional

Link text.

failsafe

Version management

The Failsafe interface is heading for version management of globally distributed Lua modules. It enables modules equipped with this interface to

• ensure, that a library module required by a template or another module available as local copy does support certain functionality, or complain if not.
• administrate global updating and linking of module codes via Wikidata.

The Failsafe interface is present both at template level and for direct Lua access.

The functions in detail are (not all supported yet completely by every library):

Parameter

Value	Result	current
nothing false	local version ID	»2020-12-16«
Minimal version	version ID required at least date in ISO format It will be compared whether the current local implementation matches this version or later. empty, if minimal version not achieved	2001-01-01 → »2020-12-16« 2099-01-01 → »«
wikidata	version ID of global upstream version ID at Wikidata local, if not found there	»2020-12-16«
item	ID of the Wikidata item empty if not defined Q104215207
~	Corresponding version ID locally and registered at Wikidata empty, if up to date version ID at Wikidata, if not equal	»«
@	Is the current (module) page linked correctly with Wikidata item? empty, if linked to the item which is supposed Iitem ID, if not	»Q104215207«
The return value is in template programming empty or under Lua false, otherwis a non-empty string as described.

Usage

• Template:Soft redirect

Functions for Lua modules (API)

Functions described above can be used by other modules:

local lucky, Softredirect = pcall( require, "Module:Softredirect" )
if type( Softredirect ) == "table" then
    Softredirect = Softredirect.Softredirect()
else
    -- failure; Softredirect is the error message
    return "<span class='error'>" .. Softredirect .. "</span>"
end

Subsequently there are available:

Softredirect.failsafe( atleast )

Versioning interface

1. atleast
   optional
   nil or minimum version or wikidata or ~ for synchronisation

returns: Version ID as string or false

Dependencies

None.