如何覆盖 Woocommerce WC_Order_Data_Store_CPT 类中的函数答案

【问题标题】：How to override a function in Woocommerce WC_Order_Data_Store_CPT Class如何覆盖 Woocommerce WC_Order_Data_Store_CPT 类中的函数
【发布时间】：2019-03-18 17:58:29
【问题描述】：

我想覆盖位于 includes/data-stores/class-wc-order-data-store-cpt.php 的 Woocommerce WC_Order_Data_Store_CPT 类中的函数 search_orders()

这是我需要重写的函数源代码：

/**
 * Search order data for a term and return ids.
 *
 * @param  string $term
 * @return array of ids
 */
public function search_orders( $term ) {
    global $wpdb;

    /**
     * Searches on meta data can be slow - this lets you choose what fields to search.
     * 3.0.0 added _billing_address and _shipping_address meta which contains all address data to make this faster.
     * This however won't work on older orders unless updated, so search a few others (expand this using the filter if needed).
     * @var array
     */

    $term = preg_replace('/[^0-9.]+/', '', $term); //  <===  <===  <=== HERE

    $search_fields = array_map( 'wc_clean', apply_filters( 'woocommerce_shop_order_search_fields', array(
        '_billing_address_index',
        '_shipping_address_index',
        '_billing_last_name',
        '_billing_email',
    ) ) );
    $order_ids = array();

    if ( is_numeric( $term ) ) {
        $order_ids[] = absint( $term );
    }

    if ( ! empty( $search_fields ) ) {
        $order_ids = array_unique( array_merge(
            $order_ids,
            $wpdb->get_col(
                $wpdb->prepare( "SELECT DISTINCT p1.post_id FROM {$wpdb->postmeta} p1 WHERE p1.meta_value LIKE '%%%s%%'", $wpdb->esc_like( wc_clean( $term ) ) ) . " AND p1.meta_key IN ('" . implode( "','", array_map( 'esc_sql', $search_fields ) ) . "')"
            ),
            $wpdb->get_col(
                $wpdb->prepare( "
                    SELECT order_id
                    FROM {$wpdb->prefix}woocommerce_order_items as order_items
                    WHERE order_item_name LIKE '%%%s%%'
                    ",
                    $wpdb->esc_like( wc_clean( $term ) )
                )
            )
        ) );
    }

    return apply_filters( 'woocommerce_shop_order_search_results', $order_ids, $term, $search_fields );
}

我只是想添加这个添加函数的开头

$term = preg_replace('/[^0-9.]+/', '', $term);

欢迎任何帮助。

【问题讨论】：

标签： php wordpress class woocommerce overriding

【解决方案1】：

您可以使用位于end of the function 的可用woocommerce_shop_order_search_results 过滤器挂钩，这将允许覆盖该方法：

add_filter( 'woocommerce_shop_order_search_results', 'custom_shop_order_search_results_filter', 10, 3 );
function custom_shop_order_search_results_filter( $order_ids, $term, $search_fields ) {
    global $wpdb;

    $term      = preg_replace('/[^0-9.]+/', '', $term); //  <===  <===  <===  Your change

    $order_ids = array();

    if ( is_numeric( $term ) ) {
        $order_ids[] = absint( $term );
    }

    if ( ! empty( $search_fields ) ) {
        $order_ids = array_unique(
            array_merge(
                $order_ids,
                $wpdb->get_col(
                    $wpdb->prepare(
                        "SELECT DISTINCT p1.post_id FROM {$wpdb->postmeta} p1 WHERE p1.meta_value LIKE %s AND p1.meta_key IN ('" . implode( "','", array_map( 'esc_sql', $search_fields ) ) . "')", // @codingStandardsIgnoreLine
                        '%' . $wpdb->esc_like( wc_clean( $term ) ) . '%'
                    )
                ),
                $wpdb->get_col(
                    $wpdb->prepare(
                        "SELECT order_id
                        FROM {$wpdb->prefix}woocommerce_order_items as order_items
                        WHERE order_item_name LIKE %s",
                        '%' . $wpdb->esc_like( wc_clean( $term ) ) . '%'
                    )
                )
            )
        );
    }
    return $order_ids
}

代码进入您的活动子主题（或活动主题）的 function.php 文件中。经过测试，它应该可以工作。

【讨论】：