LinkedWiki-Mediawiki Extension: Difference between revisions
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And we can make a Test SPARQL query against Wikidata in [[Special:SparqlQuery]], with the following query, which asks for the European capitals with a population of the more that 1 million, | And we can make a Test SPARQL query against Wikidata in [[Special:SparqlQuery]], with the following query, which asks for the European capitals with a population of the more that 1 million, | ||
which can be seen embedded in the wiki page [[LinkedWiki-Sandbox] | which can be seen embedded in the wiki page [[LinkedWiki-Sandbox]] | ||
<source lang="sparql"> | <source lang="sparql"> |
Revision as of 14:37, 15 May 2020
- Extension Link: https://www.mediawiki.org/wiki/Extension:LinkedWiki
The LinkedWiki extension lets you reuse Linked Data in your wiki. You can get data from Wikidata or another source directly with a SPARQL query. This extension also provides Lua functions for building your modules so that you can write your data in your RDF database.
installation
You will need to install yarn , I have followed the instructions in https://classic.yarnpkg.com/en/docs/install/#debian-stable which as I have problems with the yarn packed from the Debian Stable apt source.
cd extensions git clone https://github.com/wikimedia/mediawiki-extensions-LinkedWiki.git LinkedWiki cd LinkedWiki
Install composer (locally). I prefer not to have composer installed system wide, so I will install it in the LinkedData extension dir.
curl -sS https://getcomposer.org/installer | php
Run composer install, to install the dependencies
php composer.phar install --no-dev
And finally run yarn install:
yarn install --production=true
Load the extension in LocalSettings.php, by adding to it:
wfLoadExtension( 'LinkedWiki' );
Check the installation by going to Special:Interwiki and Special:LinkedWikiConfig pages, note that the extension does not appear in Special:Version.
And we can make a Test SPARQL query against Wikidata in Special:SparqlQuery, with the following query, which asks for the European capitals with a population of the more that 1 million, which can be seen embedded in the wiki page LinkedWiki-Sandbox
SELECT DISTINCT ?country ?countryName ?capital ?capitalName ?capitalPop
WHERE
{
?country wdt:P31 wd:Q6256 .
?country rdfs:label ?countryName .
FILTER (LANG(?countryName) = "en").
?country wdt:P30 wd:Q46 .
?country wdt:P36 ?capital .
?capital rdfs:label ?capitalName .
FILTER (LANG(?capitalName) = "en")
?capital wdt:P1082 ?pop .
FILTER ( abs(?pop) > 1000000)
BIND(round(?pop) as ?capitalPop )
}
ORDER BY DESC(?capitalPop)
LIMIT 20
Setting up & Config
I like to add the LinkedWiki important pages to the side bar so i add to Mediawiki:Sidebar
* Interwiki ** Special:LinkedWikiConfig|LinkedWikiConfig ** Special:Interwiki|Interwiki Data ** Special:SparqlQuery|SparqlQuery