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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 0.9.0 (2014-04-01)
MediaWikiTemplate:Extension#mediawiki 1.17+
LicenseTemplate:Extension#license GNU General Public License 2.0 or later
  • $wgSelectCategoryNamespaces
  • $wgSelectCategoryRoot
Hooks usedTemplate:Extension#hook

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

Check usage and version matrix.


Open tasks · Report a bug
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.


File release[edit]

  • Download and place the file(s) in a directory called SelectCategory in your extensions/ folder.
  • Add the following code at the bottom of your LocalSettings.php:
    require_once "$IP/extensions/SelectCategory/SelectCategory.php";
  • Configure as required
  • YesY Done - Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

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: