Admin - přidání sloupce ID do výpisu rubrik

<?php 

if (is_admin()) {

	function gog_category_column_id_sortable($columns) {
		$columns['id'] = 'ID';
		return $columns;
	}
	add_filter('manage_edit-category_sortable_columns', 'gog_category_column_id_sortable');

	function gog_category_column_header($columns) {
		$columns_new = array();
		foreach ($columns as $key => $value) {
			$columns_new[$key] = $value;
			if ($key == 'slug') {
				$columns_new['id'] = 'ID';
			}
		}
		return $columns_new;
	}
	add_filter('manage_edit-category_columns', 'gog_category_column_header');

	function gog_category_column_content($content, $column_name, $term_id) {
		return $term_id;
	}
	add_filter('manage_category_custom_column', 'gog_category_column_content', 10, 3);

}