php - WordPress 搜索结果按优先级显示(首先按标题显示帖子)

Question

I have implemented few search filters for custom search. So now i have search functions that gets posts by title and custom field. But the returned result is show random.

I want to have first shown search result by title, and then by custom field. Search result

Is there a way to do that?

The search works great, need just to display them by priority. Here is my code for search.

add_filter('posts_orderby','my_sort_custom',10,2);
        function my_sort_custom( $orderby, $query ){
            global $wpdb;
        
                if(is_search()){
                
                    $orderby =  $wpdb->prefix."posts.post_type DESC, {$wpdb->prefix}posts.ID ASC";
            }
            return  $orderby;
        }

 function __search_by_title_only( $search, &$wp_query )
{
    global $wpdb;

    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 = esc_sql( like_escape( $term ) );
        $search .= "{$searchand}($wpdb->posts.post_title LIKE '{$n}{$term}{$n}') ";
        //$searchand = ' AND ';
    }

    if ( ! empty( $search ) ) {
        $search = " AND ({$search}) ";
        if ( ! is_user_logged_in() )
            $search .= " AND ($wpdb->posts.post_password = '') ";
    }

    return $search;
}
add_filter( 'posts_search', '__search_by_title_only', 1, 2 );




 function posts_join_post_meta( $join, $query ){
 
    global $wpdb;
    
    if( is_search()){
 
        $join .= "
        INNER JOIN
          {$wpdb->postmeta} ON {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id";
 
    }
 
    return $join;
 
}
add_filter( 'posts_join', 'posts_join_post_meta', 2, 2 );




function recipe_search_where( $where, $query ){
 
    global $wpdb;
    if(is_search() ){
        $where .= " OR (
        {$wpdb->postmeta}.meta_key = '_recipe_incredients' AND {$wpdb->postmeta}.meta_value LIKE ('%".$wpdb->escape( get_query_var('s') )."%') ) ";
    }
    return $where;
}
add_filter( 'posts_where', 'recipe_search_where', 10, 2 );

Answer 1

您的帖子仅出现随机，因为您还在该行中按ID对它们进行排序{$wpdb->prefix}posts.ID ASC，尝试删除它并仅按帖子类型对它们进行排序。

如果上述方法不起作用，只需编写自己的纯 SQL 查询并执行即可。 另请注意:$wpdb->e​​scape() 函数已弃用，请尝试使用 $wpdb->prepare() 以防止 SQL 注入(inject)。

仅示例:

$wpdb->query($wpdb->prepare("
     SELECT $wpdb->posts
     INNER JOIN $wpdb->postmeta ON $wpdb->posts.ID = $wpdb->postmeta.post_id
     WHERE 1 = 1
     AND $wpdb->postmeta.meta_key = %s
     AND $wpdb->postmeta.meta_value LIKE %s
     ORDER BY $wpdb->posts.post_type DESC
     ",
    '_recipe_incredients', '%'.get_query_var('s').'%')
);

参见here了解详情。