WooCommerce: Disable payment for shipping zones, adjust with quantity in category and replace order button with text

Got into an issue with a client today, and found this article to get what I want. But it was not complete for me.

I want to disable payment, disable shipping, disable subtotal, and replace with a text box, if there was more than 5 products in cart. On top of that, I want to do the same just with 2 products in cart, for a custom category. This is done with this PHP snippet, that goes into functions. If you got any issues, please write to me and I will help with the code. It's pretty complex 🙂

Steps:

• Get your shipping zone and replace it(in this code example "flat_rate:4")
• Adjust $max_allowed_products = 5; with the suited number for you on all category
• Adjust $max_allowed_products = 2; with the suited number for you in custom category "bundle"
• Change the category you want to allow max 2 (in this example bundle)
• Change the text <p>Contact us for more information about purchasing and shipping price for this order.</p>

// Disable payment for flat_rate:4 and adjust based on product category
function disable_payment_for_flat_rate_4($needs_payment) {
    // Check if WooCommerce is active
    if (class_exists('WooCommerce')) {
        // Check if flat_rate:4 is selected as the shipping method
        $chosen_shipping_method = WC()->session->get('chosen_shipping_methods');
        if (in_array('flat_rate:4', $chosen_shipping_method)) {
            // Get the cart contents
            $cart_contents = WC()->cart->get_cart_contents_count();

            // Set the maximum allowed products
            $max_allowed_products = 5;

            // Check if there are products in the "bundle" category
            $bundle_category_products = false;
            foreach (WC()->cart->get_cart() as $cart_item) {
                $product_id = $cart_item['product_id'];
                $product_categories = get_the_terms($product_id, 'product_cat');

                // Check if the product belongs to the "bundle" category
                if ($product_categories && is_array($product_categories)) {
                    foreach ($product_categories as $category) {
                        if ($category->slug === 'bundle') {
                            $bundle_category_products = true;
                            break;
                        }
                    }
                }
            }

            // Adjust the maximum allowed products if there are products in the "bundle" category
            if ($bundle_category_products) {
                $max_allowed_products = 2;
            }

            // If the cart contains more than the allowed products, disable payment
            if ($cart_contents > $max_allowed_products) {
                $needs_payment = false;

                // Enqueue the custom JavaScript
                add_action('wp_footer', 'disable_place_order_button_script');
            }
        }
    }

    return $needs_payment;
}

// Hook the function to the 'woocommerce_cart_needs_payment' filter
add_filter('woocommerce_cart_needs_payment', 'disable_payment_for_flat_rate_4', 10, 1);

// Enqueue custom JavaScript to replace "Place Order" button with custom text
function disable_place_order_button_script() {
    ?>
    <script type="text/javascript">
        jQuery(document).ready(function($){
            // Delay the execution to ensure the "Place Order" button is fully loaded
            setTimeout(function(){
                // Remove the "Place Order" button and replace it with custom text
                $('.form-row.place-order').html('<p>Contact us for more information about purchasing and shipping price for this order.</p>');
            }, 1000); // Adjust the delay time as needed
        });
    </script>
    <?php
}

// Enqueue custom CSS to hide label for flat_rate:4 shipping method
function disable_label_for_flat_rate_4_style() {
    // Check if flat_rate:4 is selected as the shipping method
    $chosen_shipping_method = WC()->session->get('chosen_shipping_methods');
    if (in_array('flat_rate:4', $chosen_shipping_method)) {
        // Get the cart contents
        $cart_contents = WC()->cart->get_cart_contents_count();

        // Set the maximum allowed products
        $max_allowed_products = 5;

        // Check if there are products in the "bundle" category
        $bundle_category_products = false;
        foreach (WC()->cart->get_cart() as $cart_item) {
            $product_id = $cart_item['product_id'];
            $product_categories = get_the_terms($product_id, 'product_cat');

            // Check if the product belongs to the "bundle" category
            if ($product_categories && is_array($product_categories)) {
                foreach ($product_categories as $category) {
                    if ($category->slug === 'bundle') {
                        $bundle_category_products = true;
                        break;
                    }
                }
            }
        }

        // Adjust the maximum allowed products if there are products in the "bundle" category
        if ($bundle_category_products) {
            $max_allowed_products = 2;
        }

        // If the cart contains more than the allowed products, enqueue the custom CSS
        if ($cart_contents > $max_allowed_products) {
            ?>
            <style type="text/css">
                table.shop_table.woocommerce-checkout-review-order-table {
                    display: none;
                }
            </style>
            <?php
        }
    }
}

// Hook the function to the 'wp_head' action
add_action('wp_head', 'disable_label_for_flat_rate_4_style');