Hi there WP gurus!
I have a WordPress website with WooCommerce and a theme built in Genesis. On the site I have a function that makes it possible for me to add product category parents in my menu and then the function adds all children categories that belong to this top category as sub menu items automatically.
Here is the function right now:
<![CDATA[add_filter("wp_get_nav_menu_items", function ($items, $menu, $args) {
// don't add child categories in administration of menus
if (is_admin()) {
return $items;
}
foreach ($items as $index => $i) {
if ("product_cat" !== $i->object) {
continue;
}
$term_children = get_term_children($i->object_id, "product_cat");
// add child categories
foreach ($term_children as $index2 => $child_id) {
$child = get_term($child_id);
$url = get_term_link($child);
$e = new \stdClass();
$e->title = $child->name;
$e->url = $url;
$e->menu_order = 500 * ($index + 1) + $index2;
$e->post_type = "nav_menu_item";
$e->post_status = "published";
$e->post_parent = $i->ID;
$e->menu_item_parent = $i->ID;
$e->type = "custom";
$e->object = "custom";
$e->description = "";
$e->object_id = 0;
$e->db_id = 0;
$e->ID = 0;
$e->classes = array();
$items[] = $e;
}
}
return $items;
}, 10, 3);]]>
I haven't written this function myself and am not sure if it's possible to do it in a better way.
Anyway, the problem with this function that I want to change is:
1. I would like to make the category dropdowns hierarchical. Right now, the menu is only 1 level deep, although there are sub, sub-sub and sub-sub-sub-categories if you understand what I mean.
2. I want to exclude empty categories automatically, so if there are no products attached to a category, don't add it to the menu.
3. If I add another menu on the site, I don't want this function to affect that menu so if there is a way to only target my main menu by name, id or something, that would be great as well :)
Solution - 1
for the second point please try this
<![CDATA[<?php
add_filter("wp_get_nav_menu_items", function ($items, $menu, $args) {
// don't add child categories in administration of menus
if (is_admin()) {
return $items;
}
foreach ($items as $index => $i) {
if ("product_cat" !== $i->object) {
continue;
}
$term_children = get_term_children($i->object_id, "product_cat");
// add child categories
foreach ($term_children as $index2 => $child_id) {
$child = get_term($child_id);
if( $child->count == 0 ) continue;
$url = get_term_link($child);
$e = new \stdClass();
$e->title = $child->name;
$e->url = $url;
$e->menu_order = 500 * ($index + 1) + $index2;
$e->post_type = "nav_menu_item";
$e->post_status = "published";
$e->post_parent = $i->ID;
$e->menu_item_parent = $i->ID;
$e->type = "custom";
$e->object = "custom";
$e->description = "";
$e->object_id = 0;
$e->db_id = 0;
$e->ID = 0;
$e->classes = array();
$items[] = $e;
}
}
return $items;
}, 10, 3);
]]>
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