How to access into the description of a submenu? - php

Question

Well, I'm trying to get the description of a menu item and of a sub menu with the code attached below, but I'm not able to get it.
I'm trying to get the description of "About us" and the description of "Our board staff":
For the menu item (About us) is working good but for some reason the sub menu (Our board and staff) doesn't contain the information description and it just have ID, URL and Title, I already tried a var_dump() of the sub menu object (as you can see it in the code below) but it doesn't has it.
function get_menu_section_description($sectionUrl){
$menu = wp_get_menu_array("menu");
$desc = "";
foreach ($menu as $key => $item){
$arr = $item['url'];
// var_dump($item);
if ($sectionUrl == $arr[0]) {
$desc = $item['description'];
}
if(sizeof($item['children']) > 0){
foreach ($item['children'] as $key => $children){
// var_dump($children);
$arr2 = $children['url'];
if ($sectionUrl == $arr2) {
$desc = $children['description'];
}
}
} } return $desc; }
Anyone know why doesn't have the description item, how to activate it or a possible solution for that? Thanks in advance.

Answer 1

Since WordPress 3.0, you don't need a custom walker anymore!
There is the walker_nav_menu_start_el filter, see https://developer.wordpress.org/reference/hooks/walker_nav_menu_start_el/
Example
function add_menu_description($item_output, $item, $depth, $args) {
if (strlen($item->description) > 0 ) {
// append description after link
$item_output .= sprintf('<span class="description">%s</span>', esc_html($item->description));
// insert description as last item *in* link ($input_output ends with "</a>{$args->after}")
//$item_output = substr($item_output, 0, -strlen("</a>{$args->after}")) . sprintf('<span class="description">%s</span >', esc_html($item->description)) . "</a>{$args->after}";
}
return $item_output;
}
add_filter('walker_nav_menu_start_el', 'add_menu_description', 10, 4);

Answer 2

I found a solution few days a go, so may it help someone, the problem I had was was the function to call the menu wp_get_menu_array(), there I had to add the description in the sub menu, just that:
function wp_get_menu_array($current_menu) {
$array_menu = wp_get_nav_menu_items($current_menu);
$menu = array();
foreach ($array_menu as $m) {
if (empty($m->menu_item_parent)) {
$menu[$m->ID] = array();
$menu[$m->ID]['ID'] = $m->ID;
$menu[$m->ID]['title'] = $m->title;
$menu[$m->ID]['url'] = $m->url;
$menu[$m->ID]['classes'] = $m->classes;
$menu[$m->ID]['description'] = $m->description;
$menu[$m->ID]['children'] = array();
}
}
$submenu = array();
foreach ($array_menu as $m) {
if ($m->menu_item_parent) {
$submenu[$m->ID] = array();
$submenu[$m->ID]['ID'] = $m->ID;
$submenu[$m->ID]['title'] = $m->title;
$submenu[$m->ID]['url'] = $m->url;
$submenu[$m->ID]['description'] = $m->description; //Line added;
$menu[$m->menu_item_parent]['children'][$m->ID] = $submenu[$m->ID];
}
}
return $menu;
}