//creo il campo codice fiscale

add_filter( 'woocommerce_checkout_fields' , 'codice_fiscale' );

​

function codice_fiscale( $fields ) {

    $fields['billing']['codice_fiscale'] = array(

    'label'     => __('Codice Fiscale', 'woocommerce'),

    'placeholder'   => _x('Codice Fiscale', 'placeholder', 'woocommerce'),

    'required'  => true,

    'class'     => array('form-row-last'),

    'clear'     => true,

    'priority'  => 180

    );

​

    return $fields;

}   

​

add_action( 'woocommerce_checkout_update_order_meta', 'codice_fiscale_order_meta' );

​

function codice_fiscale_order_meta( $order_id ) {

    if ( ! empty( $_POST['codice_fiscale'] ) ) {

        update_post_meta( $order_id, 'Codice Fiscale', strtoupper( sanitize_text_field( $_POST['codice_fiscale'] ) ) );

    }

}

​

​

// creo il campo partita iva

add_filter( 'woocommerce_checkout_fields' , 'partita_iva' );

​

function partita_iva( $fields ) {

    $fields['billing']['partita_iva'] = array(

    'label'     => __('Partita Iva', 'woocommerce'),

    'placeholder'   => _x('Partita Iva', 'placeholder', 'woocommerce'),

    'required'  => false,

    'class'     => array('form-row-last'),

    'clear'     => true,

    'priority'  => 190

    );

​

    return $fields;

}

​

add_action( 'woocommerce_checkout_update_order_meta', 'partita_iva_order_meta' );

​

function partita_iva_order_meta( $order_id ) {

    if ( ! empty( $_POST['partita_iva'] ) ) {

        update_post_meta( $order_id, 'Partita Iva', sanitize_text_field( $_POST['partita_iva'] ) );

    }

}