Category: Semantic MediaWiki

MediaWiki composer extensions

MediaWiki composer extensions

With certain extensions using MediaWiki you may need to use composer. Two examples are Semantic Compound Queries and Maps. This example is using Windows Server 2012 R2 running WAMPserver. Obviously you will need to have composer installed in the PHP version you are using.

To install this using composer open the compose.json in the root of the Wiki:

You will see a lot of code like this:

Find the line:

“mediawiki/semantic-media-wiki”: “~2.5”

In the example for Semantic Compound Queries the extension page tells you to add the code:

    "require": {
        "mediawiki/semantic-compound-queries": "~1.1"

But in reality, we are only interested adding

“mediawiki/semantic-compound-queries”: “~1.1”

Add this line above the Semantic MediaWiki line:

“mediawiki/semantic-compound-queries”: “~1.1”,

Note, we now have a comma on the end of the line, this is key:

Save and close the composer.json file.

If you have already been running commands in the command prompt, and crucially if you have set the path anywhere, close the command prompt and reopen it.

Change the directory to the root of your Wiki and run:

composer update

Then run:

composer require mediawiki/semantic-compound-queries:~1.1

Obviously replace the semantic compound queries as detailed on the extensions page on MediaWiki.

Install Semantic MediaWiki on a Windows Machine

Install Semantic MediaWiki on a Windows Machine

You can find instructions on Semantic MediaWiki site on how to install on Windows, but it is advised that Semantic MediaWiki is not supported for Windows environments. It also misses a few areas that need to be included to ensure it installs. This is how I did it:

Ensure you have composer installed and it is in the PHP version you are using.

Remove or comment out any Semantic MediaWiki lines in the LocalSettings.php

Add the line:

enableSemantics(‘localhost/wiki’); /**adjust to yours*/

Open the command prompt, change the directory to the root of your wiki and run:

composer update:

Next run:

composer require mediawiki/semantic-media-wiki “~2.5”

Verify it has installed by going to the Version page:

Job done, on the off chance things don’t go to plan, change the directory to the maintenance folder. With Windows you will need to set the path to the PHP version by running:

set path=path/to/PHP/install

Then run:

php update.php –skip-external-dependencies

Job done.

To make Semantic MediaWiki more useful you may want to install other extensions to work with it, the five I use are:

  • Page Forms
  • Semantic Compound Queries
  • Semantic Drilldown
  • Semantic Internal Objects
  • Maps

Page Forms, Semantic Drilldown and Semantic Internal objects are fairly straight forward to install, just follow the guidance on the extension page. But Semantic Compound Queries and Maps are a little more complex. They both require the use of composer.

See the MediaWiki composer extensions for more details.