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MediaWiki extensions manualManual:Extensions
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Release status:Extension status stable

SelectCategory 0.2.png
ImplementationTemplate:Extension#type Page action
DescriptionTemplate:Extension#description Allows the user to select from existing categories when editing a page.
Author(s)Template:Extension#username Leon Weber & Manuel Schneider & Christian Boltz
Latest versionTemplate:Extension#version 0.8.2 (2013-02-28)
MediaWikiTemplate:Extension#mediawiki > 1.8.2
LicenseTemplate:Extension#license GPL

$wgSelectCategoryNamespaces $wgSelectCategoryRoot

Hooks usedTemplate:Extension#hook

Translate the SelectCategory extension if it is available at translatewiki.net

Check usage and version matrix.


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Screenshot of v0.1

The SelectCategory extension provides three functions:

  • It shows a list of all categories (unless a custom root category is configured) in their hierarchical structure on the edit page.
  • It strips all categories linked within a page upon editing and selects them in the category list list.
  • It adds selected categories from the list to the text body of the page on saving.


Stable release (recommended for most uses)[edit]

To use the stable release, download the tarball linked in the box on the right, and uncompress it. Copy SelectCategory directory into the extensions folder of your MediaWiki installation. Then add the following lines to your LocalSettings.php file (near the end):

require_once( 'extensions/SelectCategory/SelectCategory.php' );

Download from git[edit]

To use the current git version, which might be unstable and full of bugs, run the following git command:

git clone https://gerrit.wikimedia.org/r/p/mediawiki/extensions/SelectCategory.git



This is in your SelectCategory.php file

Defines in which namespaces the Extension should be active.

All namespaces are already predefined in the array. Set a specific namespace to true to enable or to false to disable the extension.

Active per default are: Media, Main, Project, Image, Help, Category.

$wgSelectCategoryNamespaces[NS_PROJECT] = false;
$wgSelectCategoryNamespaces[NS_CATEGORY] = false;
$wgSelectCategoryNamespaces     = array(
        NS_MEDIA                => true,
        NS_MAIN                 => true,
        NS_TALK                 => false,
        NS_USER                 => false,
        NS_USER_TALK            => false,
        NS_PROJECT              => true,
        NS_PROJECT_TALK         => false,
        NS_IMAGE                => true,
        NS_IMAGE_TALK           => false,
        NS_MEDIAWIKI            => false,
        NS_MEDIAWIKI_TALK       => false,
        NS_TEMPLATE             => false,
        NS_TEMPLATE_TALK        => false,
        NS_HELP                 => true,
        NS_HELP_TALK            => false,
        NS_CATEGORY             => true,
        NS_CATEGORY_TALK        => false,
        100                     => true,  # customized namespace, e.g. ''Portal'', c.f. [[Manual:Using custom namespaces]]
        101                     => false  # customized namespace, e.g. ''Portal talk'', c.f. [[Manual:Using custom namespaces]]


Set a specific root category depending the namespace. Only categories within this root will be displayed when editing a page in a certain namespace.

Useful on big wiki sites to keep the database load down.

If not set (default) the extension searches for all root categories and displays them including all children.


  $wgSelectCategoryRoot = array(
       NS_MEDIA                => false,
       NS_MAIN                 => "My Article Root Category",
       NS_TALK                 => false,
       NS_USER                 => false,
       NS_USER_TALK            => false,
       NS_PROJECT              => false,
       NS_PROJECT_TALK         => false,
       NS_IMAGE                => "My Image Root Category",
       NS_IMAGE_TALK           => false,
       NS_MEDIAWIKI            => false,
       NS_MEDIAWIKI_TALK       => false,
       NS_TEMPLATE             => false,
       NS_TEMPLATE_TALK        => false,
       NS_HELP                 => false,
       NS_HELP_TALK            => false,
       NS_CATEGORY             => false,
       NS_CATEGORY_TALK        => false


Defines if the extension should be active when editing subpages.


 $wgSelectCategoryEnableSubpages = false;


To customize the design of the select box use the CSS id "SelectCategoryBox" and attach your own settings to [[MediaWiki:Monobook.css]] or your users [[User:USERNAME/Monobook.css]].

Bugs & Feature Requests[edit]

Please file bugs and feature requests in the bug tracker on phabricator.wikimedia.org. You might just use this direct link that has these two settings pre-defined: