Edit Mediawiki extension: Semantic Drilldown

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{{stub}} <!-- <pageby nominor="false" comments="false"/> --> == Introduction == '''Semantic Drilldown''' is heavily tied in with the [[Semantic MediaWiki]] extension, and is meant to be used for drilling down structured data that has semantic markup. You must have version 1.5 or later of Semantic MediaWiki installed for the Semantic Drilldown extension to work: the code will not work without it, or with an earlier version. == Basic use == According, to the [http://www.mediawiki.org/wiki/Extension:Semantic_Drilldown Semantic Drilldown] page at Mediawiki.org, you first need "semantic contents", for example [[Semantic Forms]]. '''(1) Analyze your data''' You could use [[special:browseData]] to do so. '''(2) Create filters''' Every filter you want to be able to drill down with has to be defined separately, on a page in the "Filter:" namespace. The easiest way to create a filter is to simply go to the not-yet-created filter page, and click on the "Create with form" tab; this will show the 'CreateFilter' display Or, for you can go directly to [[Special:CreateFilter]]. Example: * [[Filter:CS Infrastructure]] '''(3) Add filters to categories''' Once you created filters, you can add the tag <nowiki>[[Has filter::Filter:filter-name]]</nowiki> (several possible) to a "semantic" top-level category page. '''(4) Include/exclude categories''' The use of Semantic DrillDown in a wiki like this one (i.e. not designed from the ground up as semantic mediawiki) requires some adjustments. The DrillDown special pages works from top-level categories. In this wiki there is only one, i.e. "Contents". The others that show up are mistakes :). We could have used the following strategy to exclude all non-semantic categories: * By default no category will show up. In the LocalSettings.php file we set: $sdgHideCategoriesByDefault = true; But since we only have a single "normal" top-level category we just inserted this in the [[:Category:Contents|Contents]] page <pre><nowiki>_HIDEFROMDRILLDOWN_</nowiki></pre> * Each category that should show up in the drilldown includes the following string: <pre><nowiki>_SHOWINDRILLDOWN_</nowiki></pre> '''Notice''': For some weird reasons I can't insert two underscores in a row in the above (i.e. the nowiki filter doesn't work). Therefore use "__" instead of "_" !! '''(5) Set some display options''' You could set the title of the drilldown page for any specific category, for example: This category has the drilldown title <nowiki>[[Has drilldown title::Browse all cities]]</nowiki>. More options are available (to document) '''Listing all filters''' * Use [[Special:Filters]] [[Category: Semantic Mediawiki]]

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