Custom Walker of Flatbook theme that adds # in front of menu items to enable one-page website

custom_walker.php

<?php
/**
 * Custom Walker used in Flatbook theme
 * 
 * @source //themeforest.net/item/flatbook-flat-ebook-selling-wordpress-theme/6023410
 * @ref //lnkd.in/dRjx4R6
 */
class description_walker extends Walker_Nav_Menu{
	  function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0){
		   //global $wp_query;
		   $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
		   $class_names = $value = '';
		   $classes = empty( $item->classes ) ? array() : (array) $item->classes;
		   $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) );
		   $class_names = ' class="'. esc_attr( $class_names ) . '"';
		   $output .= $indent . '<li id="menu-item-'. $item->ID . '"' . $value . $class_names .'><i class="fa '.$item->attr_title.'"></i>';
		   $attributes  = ! empty( $item->attr_title ) ? ' title="'  . esc_attr( $item->attr_title ) .'"' : '';
		   $attributes .= ! empty( $item->target )     ? ' target="' . esc_attr( $item->target     ) .'"' : '';
		   $attributes .= ! empty( $item->xfn )        ? ' rel="'    . esc_attr( $item->xfn        ) .'"' : '';
		   if($item->object == 'page'){
				$varpost = get_post($item->object_id);
				$attributes .= ' href="' . get_site_url() . '#' . $varpost->post_name . '"';
		   } else 
			$attributes .= ! empty( $item->url ) ? ' href="' . esc_attr( $item->url ) .'"' : '';
			$args = (object) $args;
			$item_output = $args->before;
			$item_output .= '<a'. $attributes .'>';
			$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID );
			$item_output .= $args->link_after;
			$item_output .= '</a>';
			$item_output .= $args->after;
			$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args, $id );
	        
	 }
}

I used this script to create anchor links for my custom posts in the navigation menu's.
(I created custom post types to have sections on a single page layout, and the generated URL's needed a hash preceding the postname, because the link had to point to a local ID anchor on the same page)

Instantiating this class as the custom menu walker did the trick perfectly.
The only thing I had to change was line 20 where the script says:
if($item->object == 'page')
I changed 'Page' to my own custom post type, et voila! The trick was done.