Wikipedia:Lua/Modul/WikidataScheme/en

WikidataScheme – support creation of new Wikidata data objects (items, „Q“) and completion of existing entries.

For certain objects in the (real) world some input which is always or quite often needed shall be presented for easy access. That covers properties, some typical items for this context and qualifiers. Those things should remind to provide all minimal information and are to be displayed in a comprehensible manner.

• Presentation is not bound to any human language in particular. The specification is heading for global usage and shall exploit multilingual labels and descriptions already available at Wikidata, completed by extendible multilingual text elements.
• The recommended structure of the new data object should be available to gadgets which can exploit the pointers to create an individual form for this object type. That form can be filled first until all constraints are met, then published at once. Currently by universal method a lot of particular fields are to be generated first, then items get selected from a global variety and finally published one by one.
• A global community may agree on some mandatory properties and typical items to be offered for certain thematic objects in this field. That suggestion is published independent of human language.

See the scenario for a general survey.

Functions for templates

form

Generate HTML code with a description of entities to provide (in user language)

Mandatory parameter:

• 1 – JSON data with specification, or name of a Lua page as mw.loadData

Returns: HTML code

format

Export a spezification as well formatted JSON

Mandatory parameter:

• 1 – JSON data with specification, or name of a Lua page as mw.loadData

Returns: JSON code

JSON

Export a spezification as well formatted JSON, symbolic names resolved

Mandatory parameter:

• 1 – JSON data with specification, or name of a Lua page as mw.loadData

Returns: JSON code

failsafe

Version ID (local): 2019-12-16

Optional parameter:

• 1 – Minimum version or wikidata or ~

{{#invoke:WikidataScheme|failsafe}} yields 2019-12-16

With a parameter as ISO date it is compared whether the current module satisfies this version or later.

• {{#invoke:WikidataScheme|failsafe|2001-01-01}} returns: »2019-12-16«
• {{#invoke:WikidataScheme|failsafe|2099-01-01}} returns: »« – (empty), if minimal version condition not matched
• If keyword is wikidata, result is version ID registered on Wikidata (2019-12-16) or local if not found there.
• If keyword is ~, result is empty if local and Wikidata version are the same: ().

Returns:

• Empty, if minimal version condition not matched, or ~ and local version is synchronized.
• Version ID if no parameter, or if wikidata, or local if not found there, or not synchronized.

Functions for Lua modules (API)

All functions described above can be used by other modules:

local lucky, WikidataScheme = pcall( require, "Module:WikidataScheme" )
if type( WikidataScheme ) == "table" then
    WikidataScheme = WikidataScheme.WikidataScheme()
else
    -- In the event of errors, WikidataScheme is an error message.
    return "<span class=\"error\">" .. WikidataScheme .. "</span>"
end

Subsequently there are available:

WikidataScheme.fetch( about )

Analyse a specification

• about
  • Specification; either:
    • string, with JSON code
    • string, with name of a mw.loadData page
    • table

returns: Either string, with error message, or table, with validated specification

WikidataScheme.flat( about, adjust, frame )

Generate and format JSON code

• about
  • Specification; either:
    • string, with JSON code
    • string, with name of a mw.loadData page
    • table
• adjust
  • optional boolean
  • true – symbolic entity names will be resolved
  • false (default) – symbolic entity names will be kept
• frame
  • optional
  • frame object, if available

returns: A string, with error message, or JSON code

WikidataScheme.form( about, frame )

Create HTML table

• about
  • Specification; either:
    • string, with JSON code
    • string, with name of a mw.loadData page
    • table
• frame
  • optional
  • frame object, if available

returns: HTML code as string

WikidataScheme.failsafe( atleast )

Versioning interface

• atleast
  optional
  nil or minimum version or wikidata or ~ for synchronisation

returns: Version ID as string or false

Usage

• Global coordination on creation and completion of Wikidata items.
• Pages offering WikidataScheme tables or JSON code.
• Gadget exploiting JSON of WikidataScheme
• GlobalSharing (auxilary functions)

Dependencies

• Multilingual (recommended for full language support; otherwise it will work with limited functionality)
  • WikidataScheme (recommended for full non-latin scripting support, but will help itself)

Installation on other WMF projects