wordpress搜索结果无法出现自定义字段内容(完美解决)

作者:OWEN发布时间:2022-05-01

第一步:链接查询

也就是修改搜索查询的sql代码,将postmeta表左链接进去。

/**
* Join posts and postmeta tables
*
* http://codex.wordpress.org/Plugin_API/Filter_Reference/posts_join
*/
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’ );

 

第二步:查询代码

/**
* Modify the search query with posts_where
*
* http://codex.wordpress.org/Plugin_API/Filter_Reference/posts_where
*/
function cf_search_where( $where ) {
global $pagenow, $wpdb;
if ( is_search() ) {
$where = preg_replace(
“/\(\s*”.$wpdb->posts.”.post_title\s+LIKE\s*(\'[^\’]+\’)\s*\)/”,
“(“.$wpdb->posts.”.post_title LIKE $1) OR (“.$wpdb->postmeta.”.meta_value LIKE $1)”, $where );
}
return $where;
}
add_filter( ‘posts_where’, ‘cf_search_where’ );

 

第三步:去重

/**
* Prevent duplicates
*
* http://codex.wordpress.org/Plugin_API/Filter_Reference/posts_distinct
*/
function cf_search_distinct( $where ) {
global $wpdb;
if ( is_search() ) {
return “DISTINCT”;
}
return $where;
}
add_filter( ‘posts_distinct’, ‘cf_search_distinct’ );

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