Question 60834 in Wordpress Question posted in
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WooCommerce discount for unlogged users based on if a field has any input add 10% discount – WordPress

I would like to give 10% discount for companies (B2B) but I don’t want to give discount for individual person (B2C). The only way to check if somebody (not logged in) is an individual person or a company is to check the VAT Number field in the checkout page. I need a code which make the following: check permanently the Vat number field is empty or not, if the field is not empty give 10% discount from the subtotal (from the price which not include VAT and shipping cost. I don’t want to give discount from the Vat and shipping cost) if the field is empty do not give discount, the program need to check the field permanently if is empty or not.

I tried this code but it doesn’t work.

add_action( 'woocommerce_cart_calculate_fees', 'apply_custom_discount' );
function apply_custom_discount() {
    if( ! empty( $_POST['billing_cod_fiscal'] ) ) {
        // Get the subtotal
        $subtotal = WC()->cart->subtotal;
        
        // Calculate the discount amount
        $discount = $subtotal * 0.1;
        
        // Add the discount to the cart
        WC()->cart->add_fee( __( 'Discount', 'text-domain' ), -$discount );
    }
}
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2

Answers


  1. 0

    This code checks if the user is logged in or if the VAT number field is filled. If either of those conditions are true, then the discount is applied. If not, then the discount is not applied.

    add_action( 'woocommerce_cart_calculate_fees', 'apply_custom_discount' );
function apply_custom_discount() {
    // Check if user is logged in or VAT number is filled
    if ( is_user_logged_in() || ! empty( WC()->customer->get_meta('billing_cod_fiscal') ) ) {
        // Get the subtotal
        $subtotal = WC()->cart->subtotal;

        // Calculate the discount amount
        $discount = $subtotal * 0.1;

        // Add the discount to the cart
        WC()->cart->add_fee( __( 'Discount', 'text-domain' ), -$discount );
    }
}
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  2. 0

    To give a 10% discount to companies (B2B) based on whether the VAT number field is filled or not, you can use the woocommerce_cart_calculate_fees hook to add a custom fee that represents the discount.

    Here’s an example code snippet that adds a 10% discount to B2B customers’ orders if the VAT Number field is filled:

    add_action( 'woocommerce_cart_calculate_fees', 'add_discount_based_on_vat_number' );

function add_discount_based_on_vat_number() {
    if ( ! is_user_logged_in() ) { // Check if user is not logged in
        $vat_number = isset( $_POST['vat_number'] ) ? $_POST['vat_number'] : ''; // Get the value of the VAT Number field from the POST request

        if ( ! empty( $vat_number ) ) { // Check if the field has any input
            $customer_type = 'b2b';
            $discount = 0.1;
            
            // Get the subtotal without taxes and shipping
            $subtotal_ex_tax_and_shipping = WC()->cart->subtotal_ex_tax + WC()->cart->shipping_total;

            // Calculate the discount as 10% of the subtotal
            $discount_amount = $subtotal_ex_tax_and_shipping * $discount;

            // Add the discount as a fee
            WC()->cart->add_fee( __( 'B2B Discount', 'woocommerce' ), -$discount_amount );
        }
    }
}

    In the above example, we first check if the user is not logged in using the is_user_logged_in function. If the user is not logged in, we then get the value of the "VAT Number" field from the POST request using $_POST['vat_number'].

    We then check if the field has any input using empty function. If the field has any input, we calculate the discount as 10% of the cart subtotal without taxes and shipping using the formula $subtotal_ex_tax_and_shipping * $discount.

    Finally, we add the discount as a fee using the WC()->cart->add_fee() method, and only apply the discount if the VAT number field is not empty. The code will check the field permanently in every cart calculation.

    Note: The woocommerce_cart_calculate_fees hook is only triggered when the cart is being calculated, so the discount will only be applied once the customer reaches the cart page. If you want to apply the discount on the checkout page, you may need to use a different hook, such as woocommerce_review_order_before_shipping.

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