WooCommerce中基于尺寸自定义字段的自定义购物车商品价格计算

Question

我已经在woocommerce单一产品页面中创建了一些输入自定义字段，用户可以在其中分别输入高度和宽度值……当产品添加到购物车时，自定义字段值也会显示在购物车和结帐页面中。

示例：如果用户输入height='15'和width='20'，则其显示为购物车页面，如height=15 width=20

单一产品页面

购物车页面

现在，我试图实现的是基于“高度”和“宽度”自定义字段值进行自定义价格计算：

总价=（高/3*宽/30 3）*1.48

最终计算的价格应更新购物车项目价格。但我无法实现这一部分，或者我不知道如何实现它。

这是我的代码：

/*
 * Display input on single product page
 * @return html
 */
function kia_satish_option(){
    $value = isset( $_POST['_satish_option'] ) ? sanitize_wp_checkbox( $_POST['_satish_option'] ) : '';
    printf( '<label>%s</label><input name="_satish_option" value="%s" type="number"/>', __( 'Height', 'kia-plugin-textdomain' ), esc_attr( $value ) );
}
add_action( 'woocommerce_before_add_to_cart_button', 'kia_satish_option', 9 );

function kia_satisher_option(){
    $value = isset( $_POST['_satisher_option'] ) ? sanitize_wp_checkbox( $_POST['_satisher_option'] ) : '';
    printf( '<label>%s</label><input name="_satisher_option" value="%s" type="number"/>', __( 'width', 'kia-plugin-textdomain' ), esc_attr( $value ) );
}
add_action( 'woocommerce_before_add_to_cart_button', 'kia_satisher_option', 9 );


function kia_yard_option(){
    $value = isset( $_POST['_yard_option'] ) ? sanitize_wp_checkbox( $_POST['_yard_option'] ) : '';
    printf( '<label>%s</label><input name="_yard_option" value="%s" type="number"/>', __( 'yard', 'kia-plugin-textdomain' ), esc_attr( $value ) );
}
add_action( 'woocommerce_before_add_to_cart_button', 'kia_yard_option', 9 );



/*
 * Add custom data to the cart item
 * @param array $cart_item
 * @param int $product_id
 * @return array
 */
function kia_add_cart_item_data( $cart_item, $product_id ){

    if( isset( $_POST['_satish_option'] ) ) {
        $cart_item['satish_option'] = sanitize_text_field( $_POST['_satish_option'] );
    }

    if( isset( $_POST['_satisher_option'] ) ) {
        $cart_item['satisher_option'] = sanitize_text_field( $_POST['_satisher_option'] );
    }

    if( isset( $_POST['_yard_option'] ) ) {
        $cart_item['yard_option'] = sanitize_text_field( $_POST['_yard_option'] );
    }

    return $cart_item;

}
add_filter( 'woocommerce_add_cart_item_data', 'kia_add_cart_item_data', 10, 2 );


/*
 * Load cart data from session
 * @param array $cart_item
 * @param array $other_data
 * @return array
 */
function kia_get_cart_item_from_session( $cart_item, $values ) {

    if ( isset( $values['satish_option'] ) ){
        $cart_item['satish_option'] = $values['satish_option'];
    }

    if ( isset( $values['satisher_option'] ) ){
        $cart_item['satisher_option'] = $values['satisher_option'];
    }

    if ( isset( $values['yard_option'] ) ){
        $cart_item['yard_option'] = $values['yard_option'];
    }

    return $cart_item;

}
add_filter( 'woocommerce_get_cart_item_from_session', 'kia_get_cart_item_from_session', 20, 2 );





/*
 * Add meta to order item
 * @param int $item_id
 * @param array $values
 * @return void
 */
function kia_add_order_item_meta( $item_id, $values ) {

    if ( ! empty( $values['satish_option'] ) ) {
        woocommerce_add_order_item_meta( $item_id, 'satish_option', $values['satish_option'] );           
    }

    if ( ! empty( $values['satisher_option'] ) ) {
        woocommerce_add_order_item_meta( $item_id, 'satisher_option', $values['satisher_option'] );           
    }
}
add_action( 'woocommerce_add_order_item_meta', 'kia_add_order_item_meta', 10, 2 );




/*
 * Get item data to display in cart
 * @param array $other_data
 * @param array $cart_item
 * @return array
 */
function kia_get_item_data( $other_data, $cart_item ) {

    if ( isset( $cart_item['satish_option'] ) ){

        $other_data[] = array(
            'name' => __( 'height', 'kia-plugin-textdomain' ),
            'value' => sanitize_text_field( $cart_item['satish_option'] )
        );

    }

    if ( isset( $cart_item['satisher_option'] ) ){

        $other_data[] = array(
            'name' => __( 'width', 'kia-plugin-textdomain' ),
            'value' => sanitize_text_field( $cart_item['satisher_option'] )
        );

    }

    if ( isset( $cart_item['yard_option'] ) ){

        $other_data[] = array(
            'name' => __( 'Yard', 'kia-plugin-textdomain' ),
            'value' => sanitize_text_field( $cart_item['yard_option'] )
        );

    }

    return $other_data;

}
add_filter( 'woocommerce_get_item_data', 'kia_get_item_data', 10, 2 );

我试图通过下面的代码实现公式部分：

    function woo_add_custom_general_fields_save($post_id)
{
    $woocommerce_product_height = $_POST['_product_height'];
    $woocommerce_product_width = $_POST['_product_width'];
    $woocommerce_final_price = $_POST['_final_price'];


// calculate and save _product_area_price, _regular_price, price as Height*Width
    if (!empty($woocommerce_product_height) && !empty($woocommerce_product_width)))
        $woocommerce_final_price = $woocommerce_product_height * $woocommerce_product_width ;

但它不起作用…

如何使用基于自定义购物车数据的自定义计算更改购物车项目价格？

Answer 1

很抱歉再次敲你们的门，但当我添加上面的行时，它是抛出错误的

解析错误：语法错误，意外返回（T_RETURN）

    // Display custom input fields in single product page
add_action( 'woocommerce_before_add_to_cart_button', 'add_product_custom_fields', 20 );
function add_product_custom_fields(){
    global $product;

    if( ! has_term( "fitness", 'product_cat', $product->get_id() ) return;

    $domain =  'woocommerce';
    $value = isset( $_POST['height_option'] ) ? sanitize_key( $_POST['height_option'] ) : '';
    printf( '<label>%s</label><input name="height_option" value="%s" type="number"/><br>', __( 'Height', $domain ), esc_attr( $value ) );

    $value = isset( $_POST['width_option'] ) ? sanitize_key( $_POST['width_option'] ) : '';
    printf( '<label>%s</label><input name="width_option" value="%s" type="number"/><br>', __( 'Width', $domain ), esc_attr( $value ) );

}

Answer 2

我已经完全重新访问了你的代码，删除了一些小东西，重命名了其他的，并添加了丢失的部分...

你的计算看起来很奇怪：

$total_price = ($height/3 * $width/30 + 3)*1.48;

由于一切正常，如果需要，您将能够轻松更改您的计算…

守则：

// Display custom input fields in single product page
add_action( 'woocommerce_before_add_to_cart_button', 'add_product_custom_fields', 20 );
function add_product_custom_fields(){
    $domain =  'woocommerce';
    $value = isset( $_POST['height_option'] ) ? sanitize_key( $_POST['height_option'] ) : '';
    printf( '<label>%s</label><input name="height_option" value="%s" type="number"/><br>', __( 'Height', $domain ), esc_attr( $value ) );

    $value = isset( $_POST['width_option'] ) ? sanitize_key( $_POST['width_option'] ) : '';
    printf( '<label>%s</label><input name="width_option" value="%s" type="number"/><br>', __( 'Width', $domain ), esc_attr( $value ) );
}

// Add custom fields data to cart items and make calculation price
add_filter( 'woocommerce_add_cart_item_data', 'custom_add_cart_item_data', 20, 2 );
function custom_add_cart_item_data( $cart_item, $product_id ){

    if( isset( $_POST['height_option'] ) )
        $cart_item['custom_data']['height'] = sanitize_key( $_POST['height_option'] );

    if( isset( $_POST['width_option'] ) )
        $cart_item['custom_data']['width'] = sanitize_key( $_POST['width_option'] );

    // Make calculation and save calculated  price
    if( isset( $_POST['height_option'] ) && isset( $_POST['width_option'] ) ){
        $height      = (int) sanitize_key( $_POST['height_option'] );
        $width       = (int) sanitize_key( $_POST['width_option'] );

        if( $width > 0 && $height > 0 ){
            $total_price = ( ( $height / 3 ) * ( $width / 30 ) + 3 ) * 1.48; // <== The calculation
            $cart_item['custom_data']['price'] = round($total_price, 2); // Save the price in the custom data
        }
    }

    return $cart_item;
}

// Display custom data in cart and checkout pages
add_filter( 'woocommerce_get_item_data', 'display_custom_cart_item_data', 10, 2 );
function display_custom_cart_item_data( $cart_data, $cart_item ) {
    $domain = 'woocommerce';

    if ( isset( $cart_item['custom_data']['height'] ) ){
        $cart_data[] = array(
            'name' => __( 'Height', $domain ),
            'value' => $cart_item['custom_data']['height']
        );
    }
    if ( isset( $cart_item['custom_data']['width'] ) ){
        $cart_data[] = array(
            'name' => __( 'Width', $domain ),
            'value' => $cart_item['custom_data']['width']
        );
    }
    return $cart_data;
}

// Set the new calculated price replacing cart item price
add_action( 'woocommerce_before_calculate_totals', 'set_cart_item_calculated_price', 20, 1 );
function set_cart_item_calculated_price( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;

    // Loop through cart items
    foreach ( $cart->get_cart() as $cart_item ){
        if( ! isset( $cart_item['custom_data']['price'] ) ){
            continue;
        }
        if( $cart_item['custom_data']['price'] > 0 ){
            // Set the calculated item price (if there is one)
            $cart_item['data']->set_price( (float) $cart_item['custom_data']['price'] );
        }
    }
}


// Get cart item custom data and update order item meta and display in orders and emails
add_action( 'woocommerce_checkout_create_order_line_item', 'save_order_item_custom_meta_data', 10, 2 );
function custom_add_order_item_meta( $item_id, $values ) {
    $domain = 'woocommerce';

    if( isset( $cart_item['custom_data']['height'] ) )
        $item->update_meta_data( __( 'Height', $domain ), $values['custom_data']['height'] );

    if( isset( $cart_item['custom_data']['width'] ) )
        $item->update_meta_data( __( 'Width', $domain ), $values['custom_data']['width'] );
}

代码进入活动子主题（或活动主题）的function.php文件。测试和工作。