Same Terms Cart In Prods

gistfile1.txt

/**
 * Shortcode to get the product categories IDs present in the cart.
 * Hooked to 'wp_loaded' to ensure the cart is initialized.
 * Returns a string of (numeric) IDs separated by commas.
 */
function get_cart_categories_ids_shortcode() {
    // 1. Secure initialization and cart check
    if ( ! function_exists( 'WC' ) || is_null( WC()->cart ) ) {
        return '';
    }

    // 2. Check if the cart is empty
    if ( WC()->cart->is_empty() ) {
        return '';
    }

    $category_ids = array();
    
    // 3. Loop through cart items
    foreach ( WC()->cart->get_cart() as $cart_item ) {
        // Get the product object
        $_product = $cart_item['data'];
        
        // Handle variations: ensure categories are fetched from the parent product
        if ( $_product->is_type('variation') ) {
            $product_id = $_product->get_parent_id();
        } else {
            $product_id = $_product->get_id();
        }
        
        // Get the category IDs from the product (or parent)
        $product_cat_ids = wc_get_product( $product_id )->get_category_ids();

        // Merge the IDs
        $category_ids = array_merge( $category_ids, $product_cat_ids );
    }

    // 4. Remove duplicates and format into a string
    $unique_ids = array_unique( $category_ids );
    
    return implode( ',', $unique_ids );
}

// Add a filter to ensure the shortcode is processed late
add_action( 'wp_loaded', function() {
    add_shortcode( 'cart_categories_ids', 'get_cart_categories_ids_shortcode' );
});

Query Builder Settings:

Post query (not wc product)
Post Type Product
Tax Query - prod cat - Term ID - shortcode result [cart_categories_ids]
Post not in - Wc cart