Extension:MsCatSelect

What can this extension do?

 * Adds a category to a page by selecting the category in a drop-down on the edit page
 * Easily remove categories from a page
 * Define a custom list of categories
 * You can set a specific sortkey for each category
 * Create a new subcategory in a selected category

Furthermore:


 * If you select a category in the drop-down list another drop-down will be created with all subcategories
 * The selected categories are received through the mediawiki API
 * User-friendly select boxes with Chosen



Installation
To install this extension, add the following to LocalSettings.php:

$wgMSCS_WarnNoCat
Defines if you want to get warned if there is no category defined for this page.

$wgMSCS_MainCategories
Is an array filled with categories which should be loaded in the first drop-down. If this array is nonexistent all main categories (categories which are not a subcategory) of the wiki are loaded automatically.