Woocommerce购物车数量变化停止更改最终价格

Question

默认情况下，当wooccommerce购物车数量发生变化时，它会通过将商品价格乘以数量来更新商品价格。我想更改默认行为，并确保在购物车中更改数量时不会更改点击添加到购物车时传递的默认价格

我添加了这个动作挂钩，但我不知道如何在购物车中更改数量时停止价格更改。

add_action( 'woocommerce_after_cart_item_quantity_update', 'on_quantity_changed_in_cart', 20, 4 );
function on_quantity_changed_in_cart( $cart_item_key, $quantity, $old_quantity, $cart){
if( ! is_cart() ) return; // Only on cart page
//here stop price from been changed by default
}

Answer 1

查看"禁用Wooccommerce购物车行项目数量价格计算"的回答线程，我发现我需要覆盖一个操作挂钩来替换每行的最终成本：

add_filter('woocommerce_cart_product_subtotal', [$this, 'filter_woocommerce_cart_product_subtotal'], 10, 4);
public function filter_woocommerce_cart_product_subtotal($product_subtotal, $product, $quantity, $cart){
$sub_value = 0;
foreach ($cart->cart_contents as $hash => $value) {
if ($value["product_id"] === wc_get_product($product)->get_id()) {
$sub_value =  $value["wcform-custom_price"];
//wcform-custom_price is passed from when adding to the cart.
}
};
return wc_price($sub_value);
}

现在，在总数上，我也推翻了以下

add_action( 'woocommerce_calculate_totals', [$this,'custom_item_price'],20,1);
add_filter( 'woocommerce_calculated_total', [$this,"calculateFinalTotal"], 20, 2 );

public function custom_item_price( $wc_cart ) {
$cart_contents_total = 0;
foreach ( $wc_cart->get_cart() as $cart_item_key => $cart_item ){
$cart_contents_total += $cart_item["wcform-custom_price"];
}
$wc_cart->subtotal = $cart_contents_total;
}

public function calculateFinalTotal($total,$cart){
$cart_contents_total = 0;
foreach ( $cart->get_cart() as $cart_item_key => $cart_item ){
$cart_contents_total += $cart_item["wcform-custom_price"];
}
return   $cart_contents_total;;///print_r($cart->get_cart());
}