通过 WooCommerce 中的 URL 获取并设置添加到购物车的自定义产品价格 [英] GET and set a custom product price on add to cart via URL in WooCommerce

问题描述

我正在尝试使用 URL 将参数传递给 Woocommerce 网站 - 例如:

I am trying to pass a parameter to a Woocommerce site using a URL - for instance:

site/?custom_p=77 将是 URL.

这是我的代码

add_filter('woocommerce_product_get_price', 'custom_price', 99, 2 );
add_filter('woocommerce_product_get_regular_price', 'custom_price', 99, 2 );
function custom_price( $cprice, $product ) {
    // Delete product cached price  (if needed)
    wc_delete_product_transients($product->get_id());
    // Get the data from the GET request
$custom_p=$_GET['custom_p'];
    return ($custom_p) ;
}

添加到购物车的网址 site/?add-to-cart=455&custom_p=77

当我直接声明数字 77 时的问题 $custom_p=77 但 $_GET['custom_p'] 声明给出为购物车中的结果为零.

The problem when I declare the number 77 directly it works $custom_p=77 but $_GET['custom_p'] declaration gives as a result zero in cart.

推荐答案

一旦 URL 更改，您的 GET 变量就会丢失，因此所有产品价格都会变空，因为您也没有针对已添加到购物车的产品.

Your GET variables get lost once URL changes, so all product prices get empty because also you are not targeting a the product that has been added to cart.

在这种情况下，当检测到 custom_p GET 变量时，您需要启用并使用 WooCommerce 会话变量来存储产品 ID 和自定义价格.然后您可以使用该 WooCommerce 会话变量来更改产品价格.

In this case you need to enable and use a WooCommerce Session variable to store the product ID and the custom price, when a custom_p GET variable is detected. Then you can use that WooCommerce Session variable to change the product price.

首先，我们检测必要的数据并将其存储在 WC_Session 变量中:

First we detect and store the necessary data in a WC_Session variable:

// get and set the custom product price in WC_Session
add_action( 'init', 'get_custom_product_price_set_to_session' );
function get_custom_product_price_set_to_session() {
    // Check that there is a 'custom_p' GET variable
    if( isset($_GET['add-to-cart']) && isset($_GET['custom_p']) 
    && $_GET['custom_p'] > 0 && $_GET['add-to-cart'] > 0 ) {
        // Enable customer WC_Session (needed on first add to cart)
        if ( ! WC()->session->has_session() ) {
            WC()->session->set_customer_session_cookie( true );
        }
        // Set the product_id and the custom price in WC_Session variable
        WC()->session->set('custom_p', [
            'id'    => (int) wc_clean($_GET['add-to-cart']),
            'price' => (float) wc_clean($_GET['custom_p']),
        ]);
    }
}

然后有两种方法可以更改添加到购物车的产品的价格(仅选择一种)

选项 1 - 直接更改产品价格:

// Change product price from WC_Session data
add_filter('woocommerce_product_get_price', 'custom_product_price', 900, 2 );
add_filter('woocommerce_product_get_regular_price', 'custom_product_price', 900, 2 );
add_filter('woocommerce_product_variation_get_price', 'custom_product_price', 900, 2 );
add_filter('woocommerce_product_variation_get_regular_price', 'custom_product_price', 900, 2 );
function custom_product_price( $price, $product ) {
    if ( ( $data = WC()->session->get('custom_p') ) && $product->get_id() == $data['id'] ) {
        $price = $data['price'];
    }
    return $price;
}

<小时>

选项 2 - 更改购物车商品价格:

// Change cart item price from WC_Session data
add_action( 'woocommerce_before_calculate_totals', 'custom_cart_item_price', 20, 1 );
function custom_cart_item_price( $cart ){
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    // Must be required since Woocommerce version 3.2 for cart items properties changes
    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;

    // Looo through our specific cart item keys
    foreach ( $cart->get_cart() as $cart_item ) {
        // Get custom product price for the current item
        if ( ( $data = WC()->session->get('custom_p') ) && $cart_item['data']->get_id() == $data['id'] ) {
            // Set the new product price
            $cart_item['data']->set_price( $data['price'] );
        }
    }
}

代码位于活动子主题(或活动主题)的 functions.php 文件中.经测试有效.

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

USAGE URL 变量示例:www.example.com/?add-to-cart=37&custom_p=75

USAGE URL variables example: www.example.com/?add-to-cart=37&custom_p=75

这篇关于通过 WooCommerce 中的 URL 获取并设置添加到购物车的自定义产品价格的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！