使 woocommerce 产品搜索仅搜索某些字段

Question

我刚刚使用 Woocommerce (2.1.11) 和他们的免费 Mystile 主题建立了一个专业书店网站。产品（书籍）添加了几个自定义字段，包括 isbn、作者、出版商等。

我现在想修改默认产品搜索工具以仅搜索自定义字段（而不是仅在搜索中包含自定义字段）。有谁知道这是怎么做到的吗？

谢谢

Answer 1

再次感谢 Dinesh - 最终到达那里 - 结果如下

WP 模板是一回事 - 对此感到满意 - 只是对 Woocommerce 有点困惑。

最终结果： 由于 Woocommerce 搜索结果被输入到他们的插件特定的“archive-product.php”页面中，我不得不在那里添加你的代码。 archive-pruduct.php 也是主要类别列表页面，因此在使用上述覆盖之前需要使用 is_search 条件捕获搜索：

我是这样做的：

<?php 
            if ( is_search() ) :
                $args = array(
                    'post_type' => 'product',
                    'posts_per_page' => -1,
                    'order' => 'ASC',
                    'meta_query' => array(
                         'relation' => 'OR',
                             array(
                              'key' => 'meta:_isbn_field',               //your meta key
                              'value' => $_REQUEST['meta:_isbn_field'],  //your search post value
                              'compare' => 'LIKE'
                              )
                              ), array(
                                  'key' => 'meta:_published_field',               //your meta key
                                  'value' => $_REQUEST['meta:_published_field'],  //your search post value
                                  'compare' => 'LIKE'
                              ),
                              array(
                                  'key' => 'meta:_publisher_field',              //your meta key
                                  'value' => $_REQUEST['meta:_publisher_field'],  // your search post value for author
                                  'compare' => 'LIKE'
                              ),
                              array(
                                  'key' => 'post_title',
                                  'value' => $_REQUEST['post_title'], 
                                  'compare' => 'LIKE'
                              )
                        );


                $the_query = new WP_Query( $args );

                if ( $the_query->have_posts() ) {
                     echo '<h2>Your search Results</h2>';

                        while ( $the_query->have_posts() ) {
                            $the_query->the_post();
                            echo wc_get_template_part( 'content', 'single-productsimple' );
                    }
                }else{

                    echo 'sorry nothing found';
                }
            else:

                //leave default archive-product.php code here

            endif;
            ?>

Answer 2

您可以尝试使用 meta_query 进行此搜索，因为您知道自定义字段会保存在 wp_postmeta 表中。

所以只要做这样的事情：

<?php
$args = array(
    'post_type' => 'product',
    'posts_per_page' => -1,
    'order' => 'ASC',
    'meta_query' => array(
                     'relation' => 'OR',
                     array(
                      'key' => ' isbn',               //your meta key
                      'value' => $_REQUEST['isbn'],  //your search post value
                      'compare' => 'LIKE'
                      ),
                      array(
                      'key' => ' author',              //your meta key
                      'value' => $_REQUEST['author'],  // your search post value for author
                      'compare' => 'LIKE'
                      ),
                      array(
                      'key' => ' publisher ',
                      'value' => $_REQUEST['publisher '], 
                      'compare' => 'LIKE'
                      )
                      )
            );


$query = new WP_Query( $args );

if (have_posts()) : while (have_posts()) : the_post();

// your result go here
?> 

Answer 3

使用名称和产品描述进行搜索的自定义代码（只需将此代码粘贴到 function.php 中）

// Join in your where condition

function cf_search_join( $join ) {

    global $wpdb;

    if ( is_search() ) {    
        $join .=' LEFT JOIN '.$wpdb->postmeta. ' ON '. $wpdb->posts . '.ID = ' . $wpdb->postmeta . '.post_id ';
    }

    return $join;
}

add_filter('posts_join', 'cf_search_join' );


function cf_search_distinct( $where ) {

    global $wpdb;

    if ( is_search() ) {
        return "DISTINCT";
    }

    return $where;
}

add_filter( 'posts_distinct', 'cf_search_distinct' );



// Search by Post Title

function search_by_id_only( $search, &$wp_query )
{

    //remove_filter( 'posts_search', 'vc_search_by_title_only', 500, 2 );

    global $wpdb,$wp_the_query,$wp;

    if ( empty( $search ) ){
        return $search; // skip processing - no search term in query
    }
        $q = $wp_query->query_vars;

        $n = ! empty( $q['exact'] ) ? '' : '%';
        $search = $searchand = '';

        foreach ( (array) $q['search_terms'] as $term ) {

            $term = $wpdb->esc_like( $term );
      $n = '%';

            $like = $n . $term . $n;
            $search .= $wpdb->prepare( "{$searchand}($wpdb->posts.ID LIKE %s)", $like );

            $searchand = ' OR ';

                            $search .= $wpdb->prepare( "{$searchand}($wpdb->posts.post_title LIKE %s)", $like );
            $searchand = ' OR ';

    $search .= $wpdb->prepare( "{$searchand}($wpdb->postmeta.meta_key = '_sku' AND CAST($wpdb->postmeta.meta_value AS CHAR) LIKE %s)", $like );

            //$search .= $wpdb->prepare("{$searchand} (select * from {$wpdb->postmeta} where post_id={$wpdb->posts}.ID and meta_key in ('_sku') and meta_value like %s )",$like);
            $searchand = ' OR ';

    //$search .= $wpdb->prepare( "{$searchand}($wpdb->posts.post_content LIKE %s)", $like );

    //      $searchand = ' OR ';
        }
        if ( ! empty( $search ) ) {
            $search = " AND ({$search}) ";

        }   
    return $search;
    
}

if( !is_admin() ){

  add_filter( 'posts_search', 'search_by_id_only', 500, 2 );

}