Shipping discount in WooCommerce based on cart subtotal-CodePudding

I want to activate a shipping cost discount based on the cart subtotal.

Examples:

Order subtotal above R$ 350 -> get 50% of Shipping Discount
Order subtotal above R$ 450 -> get 70% of Shipping Discount

Therefore, I use the following code:

add_filter( 'woocommerce_package_rates', 'fa_woocommerce_package_rates', 10, 2 );
function fa_woocommerce_package_rates( $rates, $package ) {

    foreach ( $rates as $key => $rate ) {
        $cost = $rate->get_cost();

        // todos os métodos
        $rate->set_cost( $cost * 0.5 ); // 0.5 = 50%

        $rates[ $key ] = $rate;
    }

    return $rates;
}

It works, but i'm struggling to make these rules. Any help would be apreciated.

CodePudding user response：

To determine the shipping discount based on the subtotal you can use the 2nd argument passed to the filter hook, namely: $package. Then you use: $package['cart_subtotal']

So you get:

function filter_woocommerce_package_rates( $rates, $package ) {
    // Get subtotal
    $subtotal = $package['cart_subtotal'];
    
    // Greater than
    if ( $subtotal > 350 ) {
        // 50% discount
        $percentage = 50;

        // If more, adjust percentage
        if ( $subtotal > 450 ) {
            // 70% discount
            $percentage = 70;
        }

        // Loop trough
        foreach ( $rates as $rate_id => $rate ) {
            // Get rate cost
            $cost = $rate->get_cost();

            // New rate cost
            $rate->set_cost( $cost - ( $cost * $percentage ) / 100 );
        }
    }   
    
    return $rates;
}
add_filter( 'woocommerce_package_rates', 'filter_woocommerce_package_rates', 10, 2 );

To target certain shipping methods, change:

// Loop trough
foreach ( $rates as $rate_id => $rate ) {
    // Get rate cost
    $cost = $rate->get_cost();

    // New rate cost
    $rate->set_cost( $cost - ( $cost * $percentage ) / 100 );
}

To:

// Loop trough
foreach ( $rates as $rate_id => $rate ) {
    // Get rate cost
    $cost = $rate->get_cost();

    // Targeting shipping method, several can be added, separated by a comma
    if ( in_array( $rate->method_id, array( 'flat_rate' ) ) ) {
        // New rate cost
        $rate->set_cost( $cost - ( $cost * $percentage ) / 100 );
    }
}