基于Woocommerce中的维度自定义字段的自定义购物车商品价格计算 [英] Custom cart item price calculation based on dimentions custom fields in Woocommerce

问题描述

我已经在woocommerce单个产品页面上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，自定义字段值也显示在购物车和结帐页面中。

I have created some input custom fields in woocommerce single product pages where user can input height and width values respectively… When product is added to cart that custom fields values are displays in cart and checkout page too.

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

Example: if user input height='15' and width='20' then its display is cart page like height=15 width=20

单个产品页面

购物车页面

现在，我要实现的目标是基于身高和宽度自定义字段值进行自定义价格计算：

Now what Iém trying to achieve is to make a custom price calculation based on that "height" and "width" custom fields values:

总价=（高度/ 3 *宽度/ 30 + 3）* 1.48

total price = (height/3 * width/30 + 3)*1.48

最终计算出的价格应会更新购物车的价格。但是我无法实现本节，或者我不知道如何实现。

The final calculated price should update cart item price. But I'm unable to achieve this section or I dont know how to achieve it.

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 );

我尝试通过以下代码实现公式部分：

I tried to achieve formula section by code below:

    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 ;

但这是行不通的……

如何通过基于自定义购物车数据的自定义计算来更改购物车价格？

How can I change the cart item price with a custom calculation based on custom cart data?

推荐答案

我已经完全重新查看了您的代码，删除了一些小东西，重命名了其他东西并添加了缺少的部分……

I have revisited completely your code, removed some little things, renamed others and added missing parts…

您的计算看起来很奇怪：

Yours calculation looks very strange:

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

一切正常，如果需要，您将能够轻松地进行计算更改……

As everything works, you will be able to make easily changes in your calculation if needed…

代码：

// 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'] );
}

代码包含在您活动的子主题的function.php文件中（或活动主题）。经过测试并可以正常工作。

Code goes in function.php file of your active child theme (or active theme). Tested and works.

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