Retrieve categories of a WooCommerce product in hierachical order

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I’m using this code and getting only a forward slash for results. I’m trying to print the parent category of a WooCommerce product. 

$prod_cat = get_category_parents($product->id);
echo $prod_cat;

Any idea how to modify it so it prints the parent categories name?

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2 comments

  1. The get_category_parents is a function that retrieve the parent categories passing as argument a category id.

    So, if you have a product and you want to retrieve a list of attached categories to it, the right function is get_the_terms.That function return all the categories objects, without order, and so you can take the first of these categories and call get_category_parents.

    Assuming the $product variable contain a post object, you can use

    $cats = get_the_terms( $product->ID, 'product_cat' );
echo $cats ? get_category_parents( array_shift($cats)->term_id ) : '';

  2. Below code should do what you want, it has the benefit of working in product and product category environments. Besides that it has some options build in, as described under how to use.

    code

    function wc_origin_trail_ancestor( $link = false, $trail = false ) {

    if (is_product_category()) {
        global $wp_query;
        $q_obj = $wp_query->get_queried_object();
        $cat_id = $q_obj->term_id;

        $descendant = get_term_by("id", $cat_id, "product_cat");
        $descendant_id = $descendant->term_id;

        $ancestors = get_ancestors($cat_id, 'product_cat');
        $ancestors = array_reverse($ancestors);

        $origin_ancestor = get_term_by("id", $ancestors[0], "product_cat");
        $origin_ancestor_id = $origin_ancestor->term_id;

        $ac = count($ancestors);

    } else if ( is_product() ) {

        $descendant = get_the_terms( $post->ID, 'product_cat' );
        $descendant = array_reverse($descendant);
        $descendant = $descendant[0];
        $descendant_id = $descendant->term_id;

        $ancestors = array_reverse(get_ancestors($descendant_id, 'product_cat'));
        $ac = count($ancestors);

    }


    $c = 1;
    if( $trail == false ){

        $origin_ancestor_term = get_term_by("id", $ancestors[0], "product_cat");
        $origin_ancestor_link = get_term_link( $origin_ancestor_term->slug, $origin_ancestor_term->taxonomy );

        if($link == true) 
            echo '<a href="'. $origin_ancestor_link .'">';
        echo $origin_ancestor_term->name;
        if($link == true) 
            echo '</a>';

    }else{

        foreach ($ancestors as $ancestor) {
            $ancestor_term = get_term_by("id", $ancestor, "product_cat");
            $ancestor_link = get_term_link( $ancestor_term->slug, $ancestor_term->taxonomy );

            if($c++ == 1) 
                echo '» '; 
            else if($c++ != 1 || $c++ != $ac) 
                echo ' » ';

            if($link == true) 
                echo '<a href="'. $ancestor_link .'">';
            echo  $ancestor_term->name;
            if($link == true) 
                echo '</a>';

        }

        $descendant_term = get_term_by("id", $descendant_id, "product_cat");
        $descendant_link = get_term_link( $descendant_term->slug, $descendant_term->taxonomy );

        echo ' » ';
        if($link == true) 
            echo '<a href="'. $descendant_link .'">';
        echo $descendant->name;
        if($link == true) 
            echo '</a>';

    }

}

    how to use

    • just toplevel, origin ancestor; without link
      wc_origin_trail_ancestor();
    • just toplevel, origin ancestor; with link
      wc_origin_trail_ancestor(true);
    • ancestor trail; without link
      wc_origin_trail_ancestor(false,true);
    • ancestor trail; with link
      wc_origin_trail_ancestor(true,true);

    notes

    • won’t work if a product has multiple main-/toplevel-categories, or at least won’t show them all;
    • same should be the case for multiple subcategories on the same level;

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