如何仅通过子主题函数更改“apply_filters”中的值？

问题描述

我有以下代码在我想删除的电子邮件的订单摘要中输出文本“via nameOfshippingMethod”：

$shipping .= apply_filters( 'woocommerce_order_shipping_to_display_shipped_via','&nbsp;<small class="shipped_via">' . sprintf( __( 'via %s','woocommerce' ),$this->get_shipping_method() ) . '</small>',$this );

从采用侵入性最小的方法的角度来看，是否有可能以某种方式更改此 apply_filters 的值，或者我是否必须替换我的子 functions.PHP 中的整个函数？

如果有人能帮助我，我将不胜感激！

为了完整起见，整个函数是（位于“abstract-wc-order.PHP）：

public function get_shipping_to_display( $tax_display = '' ) {
    $tax_display = $tax_display ? $tax_display : get_option( 'woocommerce_tax_display_cart' );

    if ( 0 < abs( (float) $this->get_shipping_total() ) ) {

        if ( 'excl' === $tax_display ) {

            // Show shipping excluding tax.
            $shipping = wc_price( $this->get_shipping_total(),array( 'currency' => $this->get_currency() ) );

            if ( (float) $this->get_shipping_tax() > 0 && $this->get_prices_include_tax() ) {
                $shipping .= apply_filters( 'woocommerce_order_shipping_to_display_tax_label','&nbsp;<small class="tax_label">' . WC()->countries->ex_tax_or_vat() . '</small>',$this,$tax_display );
            }
        } else {

            // Show shipping including tax.
            $shipping = wc_price( $this->get_shipping_total() + $this->get_shipping_tax(),array( 'currency' => $this->get_currency() ) );

            if ( (float) $this->get_shipping_tax() > 0 && ! $this->get_prices_include_tax() ) {
                $shipping .= apply_filters( 'woocommerce_order_shipping_to_display_tax_label','&nbsp;<small class="tax_label">' . WC()->countries->inc_tax_or_vat() . '</small>',$tax_display );
            }
        }

        /* translators: %s: method */
        $shipping .= apply_filters( 'woocommerce_order_shipping_to_display_shipped_via',$this );

    } elseif ( $this->get_shipping_method() ) {
        $shipping = $this->get_shipping_method();
    } else {
        $shipping = __( 'Free!','woocommerce' );
    }

    return apply_filters( 'woocommerce_order_shipping_to_display',$shipping,$tax_display );
}

解决方法

借助 Howard E 的有用提示，我能够生成以下有效的 WooCommerce 过滤器：

add_filter( 'woocommerce_order_shipping_to_display_shipped_via','woocommerce_order_shipping_to_display_shipped_via_remove',10);
   
function woocommerce_order_shipping_to_display_shipped_via_remove( $no_via ) {
    $no_via = '&nbsp;<small class="shipped_via"></small>' ;
    return $no_via;
}

这对第一次创建它很有帮助： https://www.hardworkingnerd.com/how-to-use-add_filter-and-apply_filters-in-woocommerce/