Show the menu and menu item shortcodes in the admin lists.

show-shortcodes-for-fdm.php

<?php
/**
 * Plugin Name: Show Shortcodes for Food and Drink Menu
 * Plugin URI: http://themeofthecrop.com
 * Description: Show the menu and menu item shortcodes in the admin lists.
 * Version: 1.0
 * Author: Theme of the Crop
 * Author URI: http://themeofthecrop.com
 * License:     GNU General Public License v2.0 or later
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 * Requires at least: 4.0
 * Tested up to: 4.01
 *
 * Text Domain: food-and-drink-menu
 * Domain Path: /languages/
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */
defined( 'ABSPATH' ) || exit;

add_filter( 'manage_fdm-menu_posts_columns', 'ssffdm_menu_columns', 100);
function ssffdm_menu_columns( $columns ) {
	$columns['shortcode'] = __( 'Shortcode', 'food-and-drink-menu' );
	return $columns;
}

add_action( 'manage_fdm-menu_posts_custom_column', 'ssffdm_menu_columns_content', 100, 2 );
function ssffdm_menu_columns_content( $column, $post ) {
	if ( $column === 'shortcode' ) {
		echo '[fdm-menu id=' . $post . ']';
	}
}

add_filter( 'manage_fdm-menu-item_posts_columns', 'ssffdm_menu_item_columns', 100);
function ssffdm_menu_item_columns( $columns ) {
	$columns['shortcode'] = __( 'Shortcode', 'food-and-drink-menu' );
	return $columns;
}

add_action( 'manage_fdm-menu-item_posts_custom_column', 'ssffdm_menu_item_columns_content', 100, 2 );
function ssffdm_menu_item_columns_content( $column, $post ) {
	if ( $column === 'shortcode' ) {
		echo '[fdm-menu-item id=' . $post . ']';
	}
}