How do I create shipping rules for specific product weights in WooCommerce

Advanced Flat Rate Shipping Method for WooCommerce

1. Define Shipping Zones: Go to WooCommerce > Settings > Shipping and click on the "Add Shipping Zone" button. Here, you can create shipping zones based on countries, states, or specific postal/zip codes.

2. Add Shipping Methods to Zones: Once you have defined your shipping zones, you can add specific shipping methods to each zone. WooCommerce has built-in shipping methods like Flat Rate, Free Shipping, and Local Pickup, and you can also use plugins to add more advanced shipping options.

3. Configure Shipping Method Settings: For each shipping method you add to a zone, you can configure the settings, such as shipping rates, handling fees, and delivery times. This allows you to create custom shipping rules for each location.

4. Use Plugins for Advanced Shipping Rules: Plugins like Advanced Flat Rate Shipping Method for WooCommerce and WooCommerce Multi-Carrier Shipping Plugin can provide more advanced features to create shipping rules based on product weights, such as:
- Cost on Product Weight: Set shipping rates based on product weight ranges.
- Table Rate Shipping: Create tables of product weights and specify different costs per range.

Example Code for Custom Shipping Rules

Here is an example of how you can create a custom shipping method using the Advanced Flat Rate Shipping Method plugin:

php
// Define the shipping method
function custom_shipping_method() {
    $shipping_method = new WC_Shipping_Method(
        'custom_shipping_method',
        array(
            'id' => 'custom_shipping_method',
            'method_title' => 'Custom Shipping Method',
            'method_description' => 'This is a custom shipping method',
            'instance_form_fields' => array(
                'custom_shipping_rate' => array(
                    'title' => 'Custom Shipping Rate',
                    'type' => 'text',
                ),
            ),
        )
    );

    // Define the shipping rate
    function custom_shipping_rate($package) {
        $shipping_rate = WC_Shipping_Rate::get_rate_by_name('custom_shipping_method', $package);
        if ($shipping_rate) {
            return $shipping_rate->get_rate();
        }
        return 0;
    }

    // Add the shipping method to WooCommerce
    add_filter('woocommerce_shipping_methods', 'add_custom_shipping_method');
    function add_custom_shipping_method($methods) {
        $methods[] = 'custom_shipping_method';
        return $methods;
    }

    // Add the shipping rate to WooCommerce
    add_filter('woocommerce_calculate_shipping_rates', 'add_custom_shipping_rate');
    function add_custom_shipping_rate($rates) {
        $rates[] = new WC_Shipping_Rate(
            'custom_shipping_method',
            'Custom Shipping Method',
            custom_shipping_rate($rates),
            'custom_shipping_method',
            'custom_shipping_method',
            'custom_shipping_method'
        );
        return $rates;
    }

    return $shipping_method;
}

// Register the shipping method
add_action('woocommerce_shipping_init', 'register_custom_shipping_method');
function register_custom_shipping_method() {
    global $woocommerce;
    $woocommerce->shipping->add_method('custom_shipping_method', 'custom_shipping_method');
}

// Initialize the shipping method
add_action('woocommerce_init', 'init_custom_shipping_method');
function init_custom_shipping_method() {
    global $woocommerce;
    $woocommerce->shipping->init('custom_shipping_method');
}

// Add the shipping method to the shipping zones
add_action('woocommerce_shipping_zones', 'add_custom_shipping_method_to_zones');
function add_custom_shipping_method_to_zones($zones) {
    foreach ($zones as $zone) {
        if ($zone->get_zone_name() == 'Your Zone Name') {
            $zone->add_shipping_method('custom_shipping_method');
        }
    }
}

Conclusion

Implementing custom shipping rules for specific product weights in WooCommerce requires the use of plugins like Advanced Flat Rate Shipping Method for WooCommerce or WooCommerce Multi-Carrier Shipping Plugin. These plugins provide extensive features to manage shipping rules based on various conditions. The example code above demonstrates how to create a custom shipping method using the Advanced Flat Rate Shipping Method plugin. This code defines a shipping method, adds it to WooCommerce, and sets the shipping rate based on a custom condition.