Only display Woocommerce child product categories

Question

I am currently using the following code to fetch WooCommerce product categories:

<?php
    $orderby = 'name';
    $order = 'asc';
    $hide_empty = false ;
    $cat_args = array(
        'orderby'    => $orderby,
        'order'      => $order,
        'hide_empty' => $hide_empty,
    );

    $product_categories = get_terms( 'product_cat', $cat_args );

    if( !empty($product_categories) ){
        echo '<ul>';
        foreach ($product_categories as $key => $category) {
            echo '<li>';
            echo '<a href="'.get_term_link($category).'" >';
            echo $category->name;
            echo '</a>';
            echo '<li>';
        }
        echo '</ul>';
    }
?>

This currently displays all categories, however I wish this to only show the child categories.

For example, if you are on the Category 1 page, it should show all children within that category only.

I've looked at many examples on here but have been unable to find something that works for what I need.

Solution 1

You can add this to woocommerce/archive-product.php file

$queried_object = get_queried_object();
$parent = $queried_object->term_id;
$categories = get_term_children( $parent, 'product_cat' ); 
if ( $categories && ! is_wp_error( $category ) ) : 

echo '<ul>';

foreach($categories as $category) :

$term = get_term( $category, 'product_cat' );
echo '<li>';
echo '<a href="'.get_term_link($term).'" >';
echo $term->name;
echo '</a>';
echo '</li>';

endforeach;

echo '</ul>';

endif;

This will only work on your archives. And categories with children.

It will also output grand child categories.

Hope this helps.

Solution 2

Here is a way to get only product subcategories linked list ordered by name ASC:

// The product category taxonomy
$taxonomy = 'product_cat';

// Get the parent categories IDs
$parent_cat_ids = get_terms( $taxonomy, array(
    'parent'     => 0,
    'hide_empty' => false,
    'fields'     => 'ids'
) );

// Get only "child" WP_Term Product categories
$subcategories = get_terms( $taxonomy, array(
    'exclude'     => $parent_cat_ids,
    'orderby'    => 'name',
    'order'      => 'asc',
    'hide_empty' => false,
) );

if( ! empty( $subcategories ) ){
    echo '<ul>';
    foreach ($subcategories as $subcategory) {
        echo '<li>
            <a href="'. get_term_link($subcategory) .'" >' . $subcategory->name.'</a>
        </li>';
    }
    echo '</ul>';
}

The code is tested and works

Comments

[Satish]

Can you share some sample query result?

[Admin]

You don't send your current category as a parameter, also your SQL query must filter results with this parameter. If you can share your SQL query we can observe it.