display a widget on specific category and its sub categories
you can test category identifier and parent in a widget with that : class WidgetExample extends \WP_Widget { public const IDENTIFIANT = “example1”; public const CATEGORY_ID = 25; public function __construct() { parent::__construct( self::IDENTIFIANT , “Example” ); } public function widget($args, $instance) { if (!is_category()) { return; } $currentCategory = get_queried_object(); if ( (self::CATEGORY_ID !== … Read more