自定义动态项目定价在 Woocommerce Checkout 上重置

Custom dynamic item pricing gets reset on Woocommerce Checkout

我无法让价格更新生效。或多或少,这是我用来更新价格的示例:

    add_action( 'woocommerce_before_calculate_totals', 'cst_product_quantity_discounter', 10 );
function cst_product_quantity_discounter( $cart_object ) {

    if ( is_admin() && ! defined( 'DOING_AJAX' ) ){
        return;
    }

    if( ! isset( WC()->session->reload_checkout ) ) {

        // declare woocommerce global
        global $woocommerce;      

        // array of ID's to match that represent each item

        $special_ids_array = [
            0 => array( "id" => 15372, "product" => "TAF", "single_bag_price" => 42.99, "3_multiplier" => 0.82181902768 ),
            1 => array( "id" => 14285, "product" => "POW", "single_bag_price" => 29.99, "3_multiplier" => 0.8890741358 )
        ];

        // gather cart object
        $wc_cart = WC()->cart->get_cart();

        foreach( $wc_cart as $cart_item ){

            // gather relevant data for testing and comparisons
            $product_id = $cart_item['product_id'];
            $product_key = $cart_item['key'];
            $pack_size_attribute = $cart_item['variation']['attribute_pa_sample-check']; // returns: "full-pack" || "sample" || null
            $item_quantity = $cart_item['quantity'];

            foreach ( $special_ids_array as $id_test_2 ) {
                if ( $product_id === $id_test_2["id"] && $pack_size_attribute !== "sample" ){
                    foreach ( $cart_object->cart_contents as $key => $value ) {
                        // if the key matches we will set the price of the correct product
                        if ( $key === $product_key ){
                            $discounted_price = 10;
                            $value['data']->set_price($discounted_price);
                        }
                    }
                }
            } 
        }
    }
}

还有一些其他的东西可以让我们看到这些值,但它确实有效。这将在我的测试购物车页面上更新,一切看起来都很好。

我的问题是,当我转到我的测试结帐页面时,价格会短暂更新,然后被原始价格覆盖。我在结帐时遗漏了一些 运行 的更新,并且 woocommerce_before_calculate_totals 挂钩似乎没有在结帐页面上进行永久更改。

我需要在哪里挂钩我的函数,以便无论结帐时发生的负载覆盖初始成功的价格更改,更改都会持续存在?

您的代码中有些奇怪的地方:

  • $cart_object(即 WC_Cart 对象)已经是挂钩函数中的一个参数 (它取代了 WC()->cart 或过时的 $woocommerce->cart )
  • 所以WC()->cart->get_cart()$cart_object->cart_contents是一回事。最好的方法是在 foreach 循环中使用 $cart_object->get_cart()
  • 您不需要 global $woocommerce;,因为它已包含在 WC() 中(全局 Woocommerce 对象已包含在 $cart_object 中)
  • reload_checkout 不存在于 WC_SessionsWC_Session_Handler(所以你的条件总是正确的) 和无论如何,这对这个钩子没有用。
  • 有关信息 $cart_item['data'] 是此购物车商品的 WC_Product 对象的一个​​实例。
  • 你有 2 个购物车环,一个在另一个中,你可以将所有东西合二为一(这样可以避免问题)。
  • $cart_item['key']$key (在购物车循环中) 始终是同一件事。在这种情况下你真的不需要使用它......
  • 您已在问题的新编辑中完全删除了价格计算,并且定价不再是动态的(像以前一样基于产品数量)。

So I have tried to add back a kind of dynamic price calculation in more real conditions, but in a different way based on your $special_ids_array array keys/values.

The calculated dynamic price discount start with a quantity of 3 by item that match the conditions (Product Ids et "pack size" attribute).

所以所有这些都简化和压缩了这段重新访问的代码:

add_action( 'woocommerce_before_calculate_totals', 'custom_product_quantity_discounter', 10, 1 );
function custom_product_quantity_discounter( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

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

    // array of ID's to match that represent each item
    $special_ids = array(
        0 => array( "id" => 15372, "product" => "TAF", "single_bag_price" => 42.99, "3_multiplier" => 0.82181902768 ),
        1 => array( "id" => 14285, "product" => "POW", "single_bag_price" => 29.99, "3_multiplier" => 0.8890741358 ),
    );

    // Loop through the cart items
    foreach( $cart->get_cart() as $cart_item ){
        $product_id  = $cart_item['product_id'];
        $quantity    = $cart_item['quantity'];
        $pack_size   = $cart_item['variation']['attribute_pa_sample-check']; // returns "full-pack", "sample" or null
        foreach ( $special_ids as $special_id ){
            if( $special_id['id'] == $product_id && $pack_size !== 'sample' && $quantity >= 3 ){
                $discounted_price = $special_id['single_bag_price'] * $special_id['3_multiplier']; // calculation (fake and custom)
                $cart_item['data']->set_price($discounted_price); // set the calculated price
            }
        }
    }
}

代码进入活动子主题(或活动主题)的 function.php 文件。

已测试并有效。

The dynamic calculated pricing based on cart item quantities and custom calculation persist in checkout even when reloading the page multiple times.