将自定义字段添加到 Woocommerce 中的自定义产品计算价格

Question

在 Woocommerce 中，我根据以下答案代码向我的产品单页添加了一些自定义字段：。

这是我的代码：

// Add a custom field before single add to cart
add_action( 'woocommerce_before_add_to_cart_button', 'custom_product_price_field', 5 );
function custom_product_price_field(){
echo '<div class="custom-text text">
<h3>Rental</h3>
<label>Start Date:</label>    
<input type="date" name="rental_date" value="" class="rental_date" />
<label>Period Rental:</label>
<select name="custom_price" class="custom_price">
            <option value="70" selected="selected">2 days</option>
            <option value="40">4 days</option>                
        </select>
</div>';
}

// Get custom field value, calculate new item price, save it as custom cart item data
add_filter('woocommerce_add_cart_item_data', 'add_custom_field_data', 20, 2 );
function add_custom_field_data( $cart_item_data, $product_id ){
if (! isset($_POST['custom_price']))
    return $cart_item_data;

$custom_price = (float) sanitize_text_field( $_POST['custom_price'] );
if( empty($custom_price) )
    return $cart_item_data;

$product    = wc_get_product($product_id); // The WC_Product Object
$base_price = (float) $product->get_regular_price(); // Product reg price

// New price calculation
$new_price = $base_price * $custom_price/100;

// Set the custom amount in cart object
$cart_item_data['custom_data']['rental'] = (float) $custom_price;
$cart_item_data['custom_data']['new_price'] = (float) $new_price;   
$cart_item_data['custom_data']['unique_key'] = md5( microtime() . rand() ); 
// Make each item unique

return $cart_item_data;
}

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

foreach ( $cart->get_cart() as $cart_item ) {
    if( isset($cart_item['custom_data']['new_price']) )
        $cart_item['data']->set_price( (float) $cart_item['custom_data']['new_price'] );
}
}

// Display cart item custom price details
add_filter('woocommerce_cart_item_price', 'display_cart_items_custom_price_details', 20, 3 );
function display_cart_items_custom_price_details( $product_price, $cart_item, $cart_item_key ){
if( isset($cart_item['custom_data']['rental']) ) {
    $product = $cart_item['data'];
    $product_price  = wc_price( wc_get_price_to_display( $product, array( 'price' => $product->get_regular_price() ) ) );
    $product_price .= '<br>' . wc_price( $cart_item['custom_data']['rental'] ).'&nbsp;';
    $product_price .= __("rental", "woocommerce" );     
}
return $product_price;
}

我需要在购物车中显示用户在日历中 select 编辑的日期。

<input type="date" name="rental_date" value="" class="rental_date" />

当 select 租用一段时间后，一切正常并出现在购物车中。但我需要计算百分比：

<select name="custom_price" class="custom_price">
    <option value="30%" selected="selected">2 days</option>
    <option value="60%">4 days</option>                
</select>

如果用户selects“2天”，则计算基准价格的30%。如果按“4天”计算60%。

例如，产品售价 200 美元。用户 select 的“2 天”等于 30%，并收到 140 美元的产品成本。同样，如果您 select “4 天”。

我该怎么做？

很高兴能为您提供帮助！

Answer 1

更新 4 - 尝试以下操作（随心所欲）：

// Add a custom field before single add to cart
add_action( 'woocommerce_before_add_to_cart_button', 'custom_product_price_field', 5 );
function custom_product_price_field(){
    echo '<div class="custom-text text">
    <h3>Rental</h3>
    <label>Start Date:</label>
    <input type="date" name="rental_date" value="" class="rental_date" />
    <label>Period Rental:</label>
    <select name="custom_price" class="custom_price">
        <option value="70" selected="selected">2 days</option>
        <option value="40">4 days</option> 
    </select>
    </div>';
}

// Get custom field value, calculate new item price, save it as custom cart item data
add_filter('woocommerce_add_cart_item_data', 'add_custom_field_data', 20, 2 );
function add_custom_field_data( $cart_item_data, $product_id ){
    if ( isset($_POST['rental_date']) && ! empty($_POST['rental_date']) ){
        $cart_item_data['custom_data']['date'] = $_POST['rental_date'];
    }
    if ( isset($_POST['custom_price']) && ! empty($_POST['custom_price']) ){
        $product      = wc_get_product($product_id); // The WC_Product Object
        $base_price   = (float) $product->get_regular_price(); // Product reg price
        $custom_price = (float) sanitize_text_field( $_POST['custom_price'] );

        $cart_item_data['custom_data']['base_price'] = $base_price;
        $cart_item_data['custom_data']['new_price'] = $base_price/100 * $custom_price;
        $cart_item_data['custom_data']['rental'] = $custom_price;
    }
    if ( isset($cart_item_data['custom_data']['new_price']) || isset($cart_item_data['custom_data']['date']) ){
        $cart_item_data['custom_data']['unique_key'] = md5( microtime() . rand() ); // Make each item unique
    }
    return $cart_item_data;
}

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

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

    foreach ( $cart->get_cart() as $cart_item ) {
        if( isset($cart_item['custom_data']['new_price']) )
            $cart_item['data']->set_price( (float) $cart_item['custom_data']['new_price'] );
    }
}

// Display cart item custom price details
add_filter('woocommerce_cart_item_price', 'display_cart_items_custom_price_details', 20, 3 );
function display_cart_items_custom_price_details( $product_price, $cart_item, $cart_item_key ){
    if( isset($cart_item['custom_data']['base_price']) ) {
        $product        = $cart_item['data'];
        $base_price     = $cart_item['custom_data']['base_price'];
        $product_price  = wc_price( wc_get_price_to_display( $product, array( 'price' => $base_price ) ) ) . '<br>';
        if( isset($cart_item['custom_data']['rental']) ) {
            $product_price .= $cart_item['custom_data']['rental'] == '70' ? __("2 days") : __("4 days");
        }
    }
    return $product_price;
}

// Display in cart item the selected date
add_filter( 'woocommerce_get_item_data', 'display_custom_item_data', 10, 2 );
function display_custom_item_data( $cart_item_data, $cart_item ) {
    if ( isset( $cart_item['custom_data']['date'] ) ){

        $cart_item_data[] = array(
            'name' => __("Chosen date", "woocommerce" ),
            'value' =>   date('d.m.Y', strtotime($cart_item['custom_data']['date'])),
        );
    }
    return $cart_item_data;
}

代码进入您的活动子主题（或活动主题）的 function.php 文件。已测试并有效。

将自定义字段添加到 Woocommerce 中的自定义产品计算价格

Add custom fields to custom product calculated price in Woocommerce

php

wordpress

cart

custom-fields

woocommerce