CODEWITHSUNDEEP
phpwordpressfiltermenuwoocommerce
Chris Haugen
Chris Haugen

Reputation: 817

Woocommerce use product tags to hide menu items using wp_nav_menu_objects filter

I am using a wordpress registered menu to display an unordered list of product tags on my product archives page.

I would like to maintain the hierarchy of an unordered list if possible, however, I would like to grey out the list items that have no products associated with them so users are not led to a page with no products.

the unordered list looks like this after wordpress does its thing, so each anchor has a title that is equal to the tag name: 

<ul id="menu-themes" class="menu">
    <li>
        <a href='#' title='fantasy'>Fantasy</a>
    </li>
    <li>
        <a href='#' title='science'>Science</a>
        <ul class='sub-menu'>
            <li>
                <a href='#' title='space'>Space</a>
            </li>
        </ul>
    </li>        
</ul>

I used a filter to change the href of each anchor to be appropriate. This is the filter I used in order to change this specific menu's anchor links:

function change_menu( $items, $args ){
    if( $args->theme_location == "themes" ){

        foreach($items as $item){
            global $wp;
            $current_url = home_url(add_query_arg(array(),$wp->request));

            $item->url = $current_url . '/?product_tag=' . $item->title;


        }

    }

  return $items;

}

add_filter('wp_nav_menu_objects', 'change_menu', 10, 2);

I have gotten a list of all the relevant tags to print out by using: 

function woocommerce_product_loop_tags() {
    global $post, $product;



    echo $product->get_tags();
}

Now let's say for example, this above function only echo's space. Is there a way to filter the menu further to hide all the menu items that do not equal space?

I'm thinking it would be something like this:

function filter_menu_by_tags($items, $args){
    //set scope of $product variable
    global $product;
    //this if statement makes sure only the themes menu is affected.
    if( $args->theme_location == "themes"){
        //loop through each menu item
        foreach($items as $item){
            if($item->title does not match any of the tags in $product->get_tags()){
                //then add a special class to the list item or anchor tag
            }
            else{
                 //do nothing and let it print out normally.
            }
        }
    }
}

Upvotes: 0

Views: 466

Answers (1)

GrafiCode
GrafiCode

Reputation: 3374

$product->get_tags() returns an array of tags. You can use PHP in_array() function to check if your title is on the list:

function filter_menu_by_tags($items, $args){
    //set scope of $product variable
    global $product;
    //this if statement makes sure only the themes menu is affected.
    if( $args->theme_location == "themes"){
        //loop through each menu item
        foreach($items as $item){
            if( !in_array($item->title, $product->get_tags()) ){
                // Title is not in_array Tags
                //then add a special class to the list item or anchor tag
            }
            else{
                 // Title is in_array Tags
                 //do nothing and let it print out normally.
            }
        }
    }
}

Upvotes: 1

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