基於Woocommerce中的維度自定義字段的自定義購物車商品價格計算

Question

我已經在woocommerce單個產品頁面中創建了一些輸入自定義字段，用戶可以在其中分別輸入高度和寬度值…當產品添加到購物車時，自定義字段值也會顯示在購物車和結帳頁面中。

示例：如果用戶輸入height = '15'和width = '20'，則其顯示為購物車頁面，例如height = 15 width = 20

單一產品頁面

購物車頁面

現在，我要實現的目標是基於“身高”和“寬度”自定義字段值進行自定義價格計算：

總價格=（高度/ 3 *寬度/ 30 + 3）* 1.48

最終計算出的價格應會更新購物車項目的價格。 但是我無法實現本節，或者我不知道如何實現。

這是我的代碼：

/*
 * 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 );

我試圖通過下面的代碼實現公式部分：

    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 ;

但這行不通…

如何基於自定義購物車數據通過自定義計算更改購物車項目價格？

Answer 1

我已經完全重新查看了您的代碼，刪除了一些小東西，重命名了其他東西，並添加了缺少的部分……

您的計算看起來很奇怪：

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

在一切正常的情況下，如果需要，您將能夠輕松地進行計算更改...

編碼：

// 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'] );
}

代碼進入您的活動子主題（或活動主題）的function.php文件中。 經過測試和工作。

Answer 2

抱歉再次敲你的門，但是當我在上面添加時，它會拋出錯誤

解析錯誤：語法錯誤，意外的“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 ) );

}